HEPData Search

A systematic analysis is presented on the reaction K + p → K ∗0 (890) Δ ++ for nine incident momenta between 4.6–16.0 GeV/ c . Cross sections, differential cross sections and vector meson single density matrix elements are given. As a function of energy, little if any change is observed in either the shapes of the differential cross sections or in the values of the density matrix elements. The data are interpreted in terms of current ideas on t -channel exchange mechanisms.

20 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

CROSS-SECTION OF PARTICLE DIFFRACTIVE PRODUCTION IN ANTI-P P INTERACTIONS AT 32-GEV/C. (IN RUSSIAN)

Bogolyubsky, M.Yu. ; Borovikov, A.A. ; Bravina, L.V. ; et al.

Yad.Fiz. 46 (1987) 522-530, 1987.

Inspire Record 255691 DOI 10.17182/hepdata.2402

None

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

DIFFRACTION DISSOCIATION OF ANTI-PROTONS IN anti-p p COLLISIONS AT 22.4-GeV/c

The Dubna-Alma Ata-Yerevan-Helsinki-Moscow-Prague-Tbilisi collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Gramenitsky, I.M. ; et al.

Sov.J.Nucl.Phys. 37 (1983) 58, 1983.

Inspire Record 178090 DOI 10.17182/hepdata.71073

None

11 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Inclusive $K^$+ (892) and $K^$ (892) Production in $K^+ p$ Interactions at 32-{GeV}/c

The French-Soviet & CERN-Soviet collaborations Azhinenko, I.V. ; Bryzgalov, V.V. ; Gerdyukov, L.N. ; et al.

Z.Phys.C 5 (1980) 177, 1980.

Inspire Record 153557 DOI 10.17182/hepdata.71085

Total and semi-inclusive cross sections, longitudinal and transverse momentum distributions and spin density matrix elements of theK*+(892) andK*0(892) produced in the inclusive reactionsK+p→K*+(892)+X andK+p→K*0(892)+X at 32 GeV/c are studied in detail. The inclusive spectra of theK*(892) and their decay products are compared with pion and neutral kaon production. TheK*+(892) andK*+(892) are dominantly produced by kaon fragmentation processes. The dependence of average transverse momentum <pT> vs.x for resonances has been investigated for the first time.

55 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Comparison of K+ and K- Inclusive Scattering at 10.4-GeV and 14.0-GeV

Carnegie, R.K. ; Cashmore, R.J. ; Davier, M. ; et al.

SLAC Stanford - SLAC-PUB-1610 (75,REC.SEP) 13p, 1975.

Inspire Record 100702 DOI 10.17182/hepdata.70347

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

A MEASUREMENT OF THE K0(L) p ELASTIC CROSS-SECTION FOR 3 less than or equal to p less than or equal to 13-GeV/c AND .1 less than or equal to |t| less than or equal to 1.3-GeV**2

Cittolin, S. ; Gasparini, F. ; Limentani, S. ; et al.

Nucl.Phys.B 157 (1979) 197-211, 1979.

Inspire Record 7663 DOI 10.17182/hepdata.34662

The cross section for the K L 0 p elastic scattering has been measured for the first time. The incident momentum and momentum transfer ranges are 3 ⩽ p ⩽ 13 GeV/ c , 0.1 ⩽ | t | ⩽ 1.3 GeV 2 . The results are compared to those of other experiments related to ours by isotopic spin conservation, finding agreement with some and discrepancies with others. The differential cross sections have been parametrized in the form A e bt . The coefficients show little or no dependence on energy, with A ≅ 9.8 mb · GeV −2 and b ≅ 4.7 GeV −2 . The effective linear trajectory has been determined and gives α 0 = 0.95 ± 0.15, α ′ = −0.35 ± 0.48 GeV −2 , in good agreement with dominance by pomeron exchange.

3 data tables

Table 1

CROSS SECTIONS DEDUCED FROM THE 46 PCT OF EVENTS WHICH YIELD UNIQUE SOLUTIONS.

Table 2

<RAW> CROSS SECTIONS DEDUCED FROM A STATISTICAL TREATMENT OF ALL EVENTS.

Table 3

<SMOOTHED> CROSS SECTIONS DEDUCED FROM A STATISTICAL TREATMENT OF ALL EVENTS.

Inclusive Delta++ (1232) Production in pi+ p, pi- p and K- p Interactions at 16-GeV/c

The Aachen-Berlin-Bonn-CERN-Cracow-Heidelberg-London-Vienna-Warsaw collaboration Bartke, J. ; Deutschmann, M. ; Kirk, H.G. ; et al.

Nucl.Phys.B 137 (1978) 189, 1978.

Inspire Record 5621 DOI 10.17182/hepdata.51524

None

9 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

STUDY OF p p INTERACTIONS AT 28.5-BeV/c IN TWO AND FOUR PRONG FINAL STATES

Connolly, P.L. ; Ellis, W.E. ; Hough, Paul V.C. ; et al.

C671122-2, 1967.

Inspire Record 1100201 DOI 10.17182/hepdata.50281

None

1 data table

Table 1

'1'. '2'. '3'.

PROTON-PROTON ELASTIC SCATTERING BETWEEN 13.0-GeV/c AND 28.4-GeV/c

Ma, Z.Ming ; Sprafka, R.J. ; Smith, G.A. ;

PRINT-69-1741, 1969.

Inspire Record 1104467 DOI 10.17182/hepdata.1131

None

20 data tables

Table 1

'1'.

Table 2

'2'.

Table 3

'1'.

More…

Measurement of the $\pi^{-} p \rightarrow X^{0}n$ cross section in the momentum up to 50 GeV/c

Bolotov, V.N. ; Isakov, V.V. ; Kakuridze, D.B. ; et al.

Sov.J.Nucl.Phys. 19 (1974) 308-310, 1974.

Inspire Record 1392569 DOI 10.17182/hepdata.19171

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Diffraction-like structure in elastic proton-proton scattering at large momentum transfers

Allaby, J.V. ; Diddens, A.N. ; Klovning, A. ; et al.

Phys.Lett.B 27 (1968) 49-53, 1968.

Inspire Record 1392696 DOI 10.17182/hepdata.29184

Measurements of wide angle elastic p-p scattering between 7 and 12 GeV/c are reported. Structure found in the angular distributions is suggestive of diffraction.

10 data tables

Table 1

'1'.

Table 2

'1'.

Table 3

'1'.

More…

A MEASUREMENT OF THE PROTON STRUCTURE FUNCTIONS USING INELASTIC ELECTRON SCATTERING

Mestayer, M.D. ;

PhD Thesis, 1978.

Inspire Record 131529 DOI 10.17182/hepdata.14

54 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Structure in the angular distribution of high energy proton-proton scattering

Allaby, J.V. ; Binon, F.G. ; Diddens, A.N. ; et al.

Phys.Lett.B 28 (1968) 67-71, 1968.

Inspire Record 54033 DOI 10.17182/hepdata.29155

Results are presented on measurements of elastic proton-proton scattering at 19.2 and 21.1 GeV/ c in the angular region where previously structure had been observed at lower energies.

1 data table

Table 1

'1'. '2'. '3'.

Deep inelastic scattering with leading protons or large rapidity gaps at HERA

The ZEUS collaboration Chekanov, S. ; Derrick, M. ; Magill, S. ; et al.

Nucl.Phys.B 816 (2009) 1-61, 2009.

Inspire Record 804915 DOI 10.17182/hepdata.52860

The dissociation of virtual photons, $\gamma^{\star} p \to X p$, in events with a large rapidity gap between $X$ and the outgoing proton, as well as in events in which the leading proton was directly measured, has been studied with the ZEUS detector at HERA. The data cover photon virtualities $Q^2>2$ GeV$^2$ and $\gamma^{\star} p$ centre-of-mass energies $40<W<240$ GeV, with $M_X>2$ GeV, where $M_X$ is the mass of the hadronic final state, $X$. Leading protons were detected in the ZEUS leading proton spectrometer. The cross section is presented as a function of $t$, the squared four-momentum transfer at the proton vertex and $\Phi$, the azimuthal angle between the positron scattering plane and the proton scattering plane. It is also shown as a function of $Q^2$ and $\xpom$, the fraction of the proton's momentum carried by the diffractive exchange, as well as $\beta$, the Bjorken variable defined with respect to the diffractive exchange.

48 data tables

Table 1

The differential cross section DSIG/DT for the LRG and the LPS data samples.

Table 2

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

Table 3

The fitted exponential slope of the T distribution as a function of X(NAME=POMERON).

More…

Interference between (p,f0 ...) and (rho0,b0,...) exchanges in pion diffraction dissociation at 16 gev/c

The Aachen-Berlin-Bonn-CERN-Heidelberg collaboration Beaupre, J.V. ; Deutschmann, M. ; Graessler, H. ; et al.

Phys.Lett.B 41 (1972) 393-396, 1972.

Inspire Record 75614 DOI 10.17182/hepdata.28235

It is found in the reactions π ± p →( π ± π + π − )p, believed to be dominated by diffraction dissociation, that the d σ d t′ distributions show a “cross-over” effect at t ′ ≈ 0.15, similar to the effect observed in elastic scattering. This gives evidence for the interference of ( ϱ 0 , B 0 ,…)-exchanges with ( P , f 0 , …) -exchanges in pion diffraction dissociation reactions. No such evidence is found for baryon dissociation, π ± p → π ± (p π + π − ), at the same energy.

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

K- p elastic scattering at 14.25 gev/c

Miller, R.J. ; Phelan, J.J. ; Smith, J.R. ; et al.

Phys.Lett.B 34 (1971) 230-232, 1971.

Inspire Record 69333 DOI 10.17182/hepdata.28529

The K − p differential and total elastic cross-sections have been measured at 14.25 GeV/ c . The results have been compared with various Regge models.

1 data table

Table 1

No description provided.

The reactions pi- p ---> n pi0 and pi- p ---> n eta0 in the backward hemisphere

Boright, J.P. ; Bowen, D.R. ; Groom, Donald E. ; et al.

Phys.Lett.B 33 (1970) 615-619, 1970.

Inspire Record 69352 DOI 10.17182/hepdata.28717

Cross sections for π − p→n π o at 5.9, 10.1 and 13.8 GeV/ c incident momentum are presented in the angular region from 180 o to u , the crossed four-momentum transfer squared, of −2(GeV) 2 and the energy dependence is discussed. The cross section for π − p→n η o integrated over the same angular region at 5.9 GeV/ c is also presented.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

The production of nucleon resonances in proton proton collisions at high energy and large momentum transfers

Allaby, J.V. ; Binon, F. ; Diddens, A.N. ; et al.

Phys.Lett.B 28 (1968) 229-232, 1968.

Inspire Record 56834 DOI 10.17182/hepdata.29196

Experimental results are presented on the excitation of the nucleon isobars N ∗ (1518) and N ∗ (1688) in proton-proton collisions at an incident momentum of 19.2 GeV/ c and in the range of four-momentum squared 0.6 ⩽7 z . sfnc ; t | ⩽ 5.8 GeV 2 .

3 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////Due to the method used in estimating the area under the peak).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////Due to the method used in estimating the area under the peak).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////Due to the method used in estimating the area under the peak).

The Real Part of the p-p and p-d Forward Scattering Amplitudes from 50 GeV to 400 GeV

Jenkins, E. ; Kuznetsov, A. ; Morozov, B. ; et al.

Phys.Rev.Lett. 41 (1978) 217, 1978.

Inspire Record 130086 DOI 10.17182/hepdata.11248

Proton-proton and proton-deuteron elastic scattering has been measured for incident laboratory energy from 50 to 400 GeV; minimum |t| values were, for p−p, 0.0005 (GeV/c)2, and for p−d, 0.0008 (GeV/c)2. From the differential cross sections we have determined the ratios of the real to imaginary parts of the forward scattering amplitude, ρpp and ρpd, for p−p and p−d scattering. Using a Glauber approach and a sum-of-exponentials form factor we obtain ρpn for p−n scattering.

18 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

FROM GLAUBER ANALYSIS. THE SYSTEMATIC ERRORS DUE TO THE UNCERTAINTY IN THE DEUTERON FORM FACTOR ARE COMPARABLE WITH THE STATISTICAL ERRORS.

More…

High-energy Photoproduction of $\pi^+ \pi^- \pi^0$, $K^+ K^-$, and $P \bar{P}$ States

Busenitz, J. ; Olszewski, C. ; Callahan, P. ; et al.

Phys.Rev.D 40 (1989) 1-21, 1989.

Inspire Record 285137 DOI 10.17182/hepdata.23148

We report measurements from elastic photoproduction of ω's on hydrogen for photon energies between 60 and 225 GeV, elastic φ photoproduction on hydrogen between 35 and 165 GeV and on deuterium between 45 and 85 GeV, elastic photoproduction on deuterium of an enhancement at 1.72 GeV/c2 decaying into K+K−, and elastic and inelastic photoproduction on deuterium of pp¯ pairs.

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Increased Statistics and Observation of the $g(T$), $g(T$)-prime, and $g(T$)-prime-prime 2++ Resonances in the Glueball Enhanced Channel $\pi^- p \to \phi \phi n$

Etkin, A. ; Foley, K.J. ; Hackenburg, R.W. ; et al.

Phys.Lett.B 201 (1988) 568-572, 1988.

Inspire Record 253944 DOI 10.17182/hepdata.30006

In a new experiment we have obtained 3006 new events in the reaction π − p → φφ n, approximately doubling the statistics which now total 6658. A refined partial wave analysis of the φφ system again reveals three resonances (g T , g T′ , g T′' ) with I G J PC =0 + 2 ++ . The absence of the OZI suppression, and the observation of only three J PC =2 ++ states (g T , g T′ , g T′' ) which comprise virtually all the cross section are unusual characteristics of the data. The large φφn signal occurs over a mostly structureless and incoherent φK + K − n background. All these unusual characteristics are well explained if these states are produced by 1–3 glueballs (multigluon resonances).

2 data tables

Table 1

Total cross section plus systematic error supplied by authors.

Table 2

Absolute cross section based on total cross section of 50 +- 15 nb. Errors quoted in Table are statistical only.

ELASTIC SCATTERING OF pi- AND K- MESONS ON PROTONS AT 43-GeV/c MOMENTUM

The SIGMA-AYaKS & Dubna-Serpukhov-Tbilisi collaborations Antipov, Yu.M. ; Batarin, V.A. ; Bezzubov, V.A. ; et al.

Sov.J.Nucl.Phys. 48 (1988) 85, 1988.

Inspire Record 253399 DOI 10.17182/hepdata.38881

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

FROM EXPONENTIAL FIT OF D(SIG)/D(T) IN RANGE 0. < ABS(T) < 1. GEV.

Quasielastic Charge Exchange of Negative Pions on Carbon Into $\pi^0$, $\eta$, $\eta^\prime$ (958), $\omega(783)$ and F2 (1270) Mesons at 39.1-{GeV}/$c$

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.

Sov.J.Nucl.Phys. 46 (1987) 644, 1987.

Inspire Record 239549 DOI 10.17182/hepdata.40865

None

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

pi- p ---> f2 (1270) n REACTION IN THE REGION t < 2.0-GeV/c**2 AT 40-GeV/c

Apokin, V.D. ; Arestov, Yu.I. ; Belikov, N.I. ; et al.

Sov.J.Nucl.Phys. 47 (1988) 1041, 1988.

Inspire Record 239548 DOI 10.17182/hepdata.40792

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

STUDY OF THREE-BODY REACTIONS K+ p ---> K+ K+ LAMBDA AND K+ p ---> p p anti-LAMBDA AT 32-GeV/c

Chliapnikov, P.V. ; Gerdyukov, L.N. ; Makharadze, T.G. ;

Sov.J.Nucl.Phys. 46 (1987) 89, 1987.

Inspire Record 235218 DOI 10.17182/hepdata.10555

None

14 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////DECAY-BR(BRN=LAMBDA --> P PI-)//DECAY-BR(BRN=ALAMBDA --> AP PI+)).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////DECAY-BR(BRN=LAMBDA --> P PI-)//DECAY-BR(BRN=ALAMBDA --> AP PI+)).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////DECAY-BR(BRN=LAMBDA --> P PI-)//DECAY-BR(BRN=ALAMBDA --> AP PI+)).

More…

Electron Scattering at 4-Degrees with Energies of 4.5-GeV - 20-GeV

Stein, S. ; Atwood, W.B. ; Bloom, Elliott D. ; et al.

Phys.Rev.D 12 (1975) 1884, 1975.

Inspire Record 100597 DOI 10.17182/hepdata.4669

This paper presents the results of the analysis of a single-arm inelastic-electron-scattering experiment at an angle of 4°. We present data on the turnon of scaling in the low-q2 region 0.1<q2<1.8, the neutron-proton comparison at large values of the scaling variable ω, resonance excitation, and the shadowing in scattering from heavy nuclei.

21 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Measurement of Elastic electron Scattering from the Proton at High Momentum Transfer

Arnold, R.G. ; Bosted, Peter E. ; Chang, C.C. ; et al.

Phys.Rev.Lett. 57 (1986) 174, 1986.

Inspire Record 228320 DOI 10.17182/hepdata.3133

We have performed absolute measurements of the differential cross section for elastic e−p scattering in the range of momentum transfer from Q2=2.9 to 31.3 (GeV/c)2. Combined statistical and systematic uncertainties in the cross-section measurements ranged from 3% at low Q2 to 19% at high Q2. These data have been used to extract the proton magnetic form factor GMp(Q2). The results show a smooth decrease of Q4GMp with momentum transfer above Q2=10 (GeV/c)2. These results are compared with recent predictions of perturbative QCD.

14 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

DIFFRACTION PROCESSES IN SIX BODY EXCLUSIVE K+ P REACTIONS AT 32-GEV/C. (IN RUSSIAN)

Azhinenko, I.V. ; Amaglobeli, N.S. ; Vorobev, A.P. ; et al.

Sov.J.Nucl.Phys. 46 (1987) 464, 1987.

Inspire Record 240069 DOI 10.17182/hepdata.10330

None

31 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Elastic Photon Proton Scattering in the 50-{GeV} - 130-{GeV} Range

Breakstone, A.M. ; Cheng, D.C. ; Dorfan, D.E. ; et al.

Phys.Rev.Lett. 47 (1981) 1778-1781, 1981.

Inspire Record 173082 DOI 10.17182/hepdata.20627

In the tagged-photon beam at Fermilab, differential cross sections were measured for the elastic scattering of photons on a liquid-hydrogen target. The diffractive forward peak was measured for photon energies between 50 and 130 GeV and |t| values between 0.07 and 1.20 (GeV/c)2. The shape of the diffraction peak is similar to that seen in π−p scattering. The magnitude is that predicted by the optical theorem.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Elastic Scattering of Charged Mesons, Anti-protons and Protons on Protons at Incident Momenta of 20-{GeV}/$c$, 30-{GeV}/$c$ and 50-{GeV}/$c$ in the Momentum Transfer Range $0.5-{\rm GeV}/c^2 < -t < 8-{\rm GeV}/c^2$

The Annecy(LAPP)-CERN-Bohr Inst-Genoa-Oslo-London collaboration Asad, Z. ; Baglin, C. ; Bock, R. ; et al.

Nucl.Phys.B 255 (1985) 273-327, 1985.

Inspire Record 206292 DOI 10.17182/hepdata.33789

Results are presented from experiment WA7 at the CERN SPS, which has measured the elastic differential cross sections of π ± p, K ± p, p p and pp at incident momen ta of 20, 30 and 50 GeV/ c . The measurements cover the momentum transfer range 0.5 < | t | < 8 (GeV/ c ) 2 , corresponding to c.m. scattering angles between 10° and 50°. The experimental set-up, trigger logic and data analysis are described. The experimental results are compared with existing meson-proton and nucleon-proton data at lower and higher energies covering the medium- and large-| t | region. Some prominent models and their predictions for elastic scattering at WA7 energies and beyond are reviewed, with emphasis on geometrical scaling, factorizing eikonal models, lowest-order QCD and other dynamical exchange-type models. Results for p p two-body annihilation into π − π + and K − K + at 30 and 50 GeV/ c , obtained in parallel with the elastic p p data, are also presented.

9 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

A Spin Parity Analysis of the $\omega \pi^0$ Enhancement Photoproduced in the Energy Range 20-{GeV} to 70-{GeV}

The Omega Photon collaboration Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.

Nucl.Phys.B 243 (1984) 1-28, 1984.

Inspire Record 195216 DOI 10.17182/hepdata.33872

A study is made of the ωπ 0 system produced near threshold in the reaction γ p→ π + π − π 0 π 0 p. A spin-parity analysis shows that the ωπ 0 enhancement is consistent with predominant 1 + B(1235) production, with ∼20% J P = 1 − background.

2 data tables

Table 1

MEAN BEAM ENERGY IS 39 GEV.

Table 2

ESTIMATE OF B(1235) PRODUCTION CROSS SECTION ASSUMING 1+ CROSS SECTION OF 0.63 +- 0.20 MUB AND THAT 20 PCT OF THIS IS DUE TO BACKGROUND S-WAVE CONTRIBUTIONS.

Search for New S Anti-s States in the $K^-$ Induced $K^+ K^-$ System

Armstrong, T. ; Baubillier, M. ; Beusch, W. ; et al.

Nucl.Phys.B 224 (1983) 193-217, 1983.

Inspire Record 190033 DOI 10.17182/hepdata.33934

Results from the first PWA of the K + K − system produced by incident K − , are presented in the mass range from the threshold to 1.70 GeV. In the P and D waves only the φ and f′ mesons are observed and their production mechanism studied. A broad S wave peaking at 1.4 GeV is observed but the lack of information about its phase makes the search for new 0 ++ mesons inconclusive.

4 data tables

Table 1

ASSUMING BRANCHING RATIO 0.486 FOR PHI --> K+ K-.

Table 2

No description provided.

Table 3

No description provided.

More…

STUDY OF ELASTIC anti-p p SCATTERING AT 32-GeV/c

Bogolyubsky, M.Yu. ; Kiryunin, A.E. ; Kotova, A.I. ; et al.

Sov.J.Nucl.Phys. 41 (1985) 773, 1985.

Inspire Record 205769 DOI 10.17182/hepdata.40982

None

3 data tables

Table 1

Axis error includes +- 0.0/0.0 contribution (?////FOR LOSSES OF PROTONS WITH MOMENTUM >1.2 GEV).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////FOR LOSSES OF PROTONS WITH MOMENTUM >1.2 GEV).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////FOR LOSSES OF PROTONS WITH MOMENTUM >1.2 GEV).

Photoproduction of $\phi$ Mesons by Linearly Polarized Photons of Energy 20-{GeV} to 40-{GeV} and Further Evidence for a Photoproduced High Mass $K K$ Enhancement

The Omega Photon collaboration Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.

Z.Phys.C 27 (1985) 233, 1985.

Inspire Record 204590 DOI 10.17182/hepdata.16067

A study of ϕ-meson photoproduction by partially polarized photons of energy 20–40 GeV is reported. The production mechanism is found to conserves-channel helicity and to proceed via natural-parity exchange in thet channel. In the photoproduction of high-massK+K− states with photons of energy 20–70 GeV, there is evidence for an enhancement at a mass of 1.76 GeV with width 0.08 GeV.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

THE REACTION P P ---> (LAMBDA0 K+) P AT 50-GEV/C AND 30-GEV/C: PARTIAL WAVE ANALYSIS, DECK MODEL AND DOUBLE REGGE EXCHANGE

Cleland, W.E. ; Delfosse, A. ; Dorsaz, P.-A. ; et al.

Nucl.Phys.B 239 (1984) 27-51, 1984.

Inspire Record 205379 DOI 10.17182/hepdata.33884

We have obtained a sample of 20 465 (2201) events in the channel pp→ ( Λ 0 K + )p at 50 (30) GeV/ c incident momentum with Geneva-Lausanne spectrometer at the CERN SPS. In this analysis we investigate: 1. (i) the production of N ∗ (I = 1 2 ) states in the mass region 1.6 ⩽ M ( Λ 0 K + ) ⩽ 2.6 GeV and momentum transfer 0.06 ⩽ | t | 1.0 (GeV/ c ) 2 , by studing the amplitudes and phases from a moment analysis of the decay angular distribution; 2. (ii) the contribution of the K-exchange Deck model for M ( Λ 0 K + < 2.22 GeV; 3. (iii) the double Regge exchange phenomenology for s Λ 0 K + > 5 GeV 2 and s Λ 0 K + p > 5 GeV 2 .

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Observation of a Peak at 1.28-{GeV} in the $\eta \pi \pi$ System in the Reaction $\gamma p \to \eta \pi^+ \pi^- p$

The Omega Photon collaboration Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.

Nucl.Phys.B 242 (1984) 269-281, 1984.

Inspire Record 194474 DOI 10.17182/hepdata.33873

A peak is reported in the ηπ + π − system, produced in the reaction γ p→ ηπ + π − p, at a mass of 1.28 ± 0.01 GeV with a width of 0.08 ± 0.02 GeV. Possible spin-parity assignments for the peak are shown to be J π = 1 − , J π = 1 + or J π = 2 + and interpretations of these assignments are discussed.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

STUDY OF K- (890) AND K- (1430) PRODUCTION IN THE REACTION K- P ---> ANTI-K0 PI- P AT 100-GEV/C AND 175-GEV/C

Bromberg, C. ; Dickey, J. ; Fox, G. ; et al.

Phys.Rev.D 29 (1984) 2469-2475, 1984.

Inspire Record 205297 DOI 10.17182/hepdata.23731

The reaction K−p→K¯0π−p has been studied at 100 and 175 GeV/c and the reaction π−p→K0K−p at 50, 100, and 175 GeV/c. Both reactions are dominated by production of resonances, K*(890), K*(1430) and A2(1320), A2(2040), respectively. Production cross sections, t distributions, and decay-angular distributions are studied. Isoscalar natural-parity exchange is dominant. The energy dependence of the K* and A2 resonance production between 10 and 175 GeV/c is well described by a Regge-pole model. Our data on A2 corrects that in an earlier paper.

8 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Inclusive Production Cross-Sections of Resonances in 32-GeV/c K+ p Interactions

The French-Soviet & CERN-Soviet collaborations Granet, P. ; Mosca, L. ; Saudraix, J. ; et al.

Nucl.Phys.B 140 (1978) 389, 1978.

Inspire Record 121746 DOI 10.17182/hepdata.34983

The inclusive production of resonances is systematically studied in K + p interactions at 32 GeV/ c . Total production cross sections are given for three baryon resonances, five vector and three 2 + tensor mesons. We also compare the central and fragmentation components of the total production cross sections with quark model predictions.

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Photoproduction of $\pi^+ \pi^- \pi^0$ on Hydrogen With Linearly Polarized Photons of Energy 20-{GeV} - 70-{GeV}

The Omega Photon & Bonn-CERN-Glasgow-Lancaster-Manchester-Paris-Rutherford-Sheffield collaborations Atkinson, M. ; Axon, T.J. ; Barberis, D. ; et al.

Nucl.Phys.B 231 (1984) 15-39, 1984.

Inspire Record 191169 DOI 10.17182/hepdata.33892

Results on photoproduction of π + π − π 0 in the photon energy range 20–70 GeV are presented. For the ω meson, the production cross-section is found to be 1010±15 (statistical)±290 (systematic) nb and is constant over the incident photon energy range. Spin-density matrix elements are evaluated for ω meson production. The φ meson is observed with a total photoproduction cross section (corrected for branching ratio to π + π − π 0 ) of 610±35±170 nb. A third resonance, at 1.67 GeV, is seen in the mass spectrum and its interpretation is discussed. The production of a broad π + π − π 0 continuum, mainly via ϱπ, and peaking at 1.2 GeV, contributes with a cross section of about 2.5 ωb. The spin-parity content is analysed by the moments of the π + π − π 0 decay angular distribution in the helicity frame and by maximum likelihood fits to the π + π − π 0 Dalitz plot. It is found that production of J P = 1 − states accounts for less than half of the total mass spectrum above 900 MeV. There is a broad enhancement in the 1 + wave around 1.15 GeV indicating photoproduction of the H(1190) meson.

6 data tables

Table 1

No description provided.

Table 2

EXPONENTIAL FITS TO D(SIG)/DT IN OMEGA MASS REGION.

Table 3

EXPONENTIAL FITS TO D(SIG)/DT OVER FULL ENERGY FOR THREE MASS REGIONS CORRESPONDING TO OMEGA, PHI AND OMEGA*.

More…

anti-p p ELASTIC SCATTERING AT 30-GeV/c INCIDENT MOMENTUM IN THE MOMENTUM TRANSFER RANGE 0.5-GeV/c2 < -t < 5.8-GeV/c2

The Annecy(LAPP)-CERN-Bohr Inst-Genoa-Oslo-London collaboration Asad, Z. ; Baglin, C. ; Bock, R. ; et al.

Phys.Lett.B 130 (1983) 335-339, 1983.

Inspire Record 191868 DOI 10.17182/hepdata.30657

The p p elastic differential cross section at 30 GeV/ c incident momentum has been measured in a two-arm spectrometer experiment (WA7) at the CERN SPS. The | t |-range covered extends from 0.5 to 5.8 (GeV/ c ) 2 . A pronounced dip-bump structure is observed, with a sharp minimum around | t | ≈ 1.7 (GeV/ c ) 2 . The results are compared with existing p p data at lower energies and with our earlier p p data at 50 GeV/ c . A number of model predictions are discussed. We also compare the p p 30 GeV/ c differential cross section with that of pp at the same momentum. Finally, the energy dependence of the p p fixed-| t | differential cross in the incident momentum range 3.6 to 50 GeV/ c is presented.

1 data table

Table 1

NUMERICAL VALUES SUPPLIED BY D. IMRIE. ERROR CONTAINS BOTH STATISTICS AND SYSTEMATICS.

Photoproduction of $\rho^0$ and $\omega$ on Hydrogen at Photon Energies of 20-{GeV} to 70-{GeV}

The Bonn-CERN-Ecole Poly-Glasgow-Lancaster-Manchester-Orsay-Paris-Rutherford-Sheffield collaboration Aston, D. ; Atkinson, M. ; Bailey, R. ; et al.

Nucl.Phys.B 209 (1982) 56-76, 1982.

Inspire Record 177583 DOI 10.17182/hepdata.44662

We present results on photoproduction of ϱ 0 and ω in the reactions γ p→ π + π − p and γ p→ π + π − π 0 p by tagged photons in the energy ranges 20 to 70 GeV and 20 to 45 GeV, respectively. The production of the ϱ 0 shows dominantly the characteristics of a diffractive process with respect to the E γ and t dependence of the cross section and the spin density matrix. The ϱ 0 photoproduction yields on average over the photon energy range a total cross section of σ ( γ p→ ϱ 0 p) = 9.4±0.1 μ b with an additional systematic error of ±1 μ b, and average slope parameters of the t distribution d σ /d t ≈exp(− b | t | + ct 2 ), of b =9.1±0.1 GeV −2 and c = 3.1 ±±0.2 GeV −4 . The shape of the ϱ 0 peak in the π + π − invariant spectra shows a skewing similar to that observed at lower energies. The photoproduction of ω is also consistent with a diffractive process and has a cross section of σ ( γ p→ ω p) = 1.2± 0.1 μ b with an additional systematic error of ±0.2 μ b. The average slope parameters of the t distribution are b =8.3 ± 1.3 GeV −2 and c = 3.4±2.6 GeV −4 .

8 data tables

Table 1

FITS USING THE SODING PARAMETERIZATION.

Table 2

FITS USING THE ROSS-STODOLSKY PARAMETERIZATION.

Table 3

No description provided.

More…

Soft $\pi^- p$ and $p p$ Elastic Scattering in the Energy Range 30-{GeV} to 345-{GeV}

Burq, J.P. ; Chemarin, M. ; Chevallier, M. ; et al.

Nucl.Phys.B 217 (1983) 285-335, 1983.

Inspire Record 182455 DOI 10.17182/hepdata.7556

Differential cross sections for π − p and pp elastic scattering have been measured at incident momenta ranging from 30 to 345 GeV and in the t range 0.002 (GeV/ c ) 2 ⩽ | t | ⩽ 0.04 (GeV/ c ) 2 . From the analysis of the data, the ratio ϱ ( t = 0) of the real to the imaginary parts of the forward scattering amplitude was determined together with the logarithmic slope b of the diffraction cone.

13 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

STUDY OF A2 PRODUCTION IN THE REACTION PI- P ---> K0 K- P AT 50-GEV/C, 100-GEV/C, AND 175-GEV/C

Bromberg, C. ; Dickey, J.o. ; Fox, G. ; et al.

Phys.Rev.D 27 (1983) 1-11, 1983.

Inspire Record 191493 DOI 10.17182/hepdata.23901

The reaction π−p→K0K−p has been measured from 50 to 175 GeV/c. The production characteristics of the A2 have been analyzed. We find spin and t dependence similar to lower energies, but the cross section falls rapidly with energy. In a Regge description of π−p→A2−p our data imply a rather small Pomeron-exchange component.

6 data tables

Table 1

No description provided.

Table 2

RAW CROSS SECTION WITHIN MASS CUTS.

Table 3

No description provided.

More…

RESONANCE PRODUCTION IN THE REACTION PI+- P ---> K0(S) K+- P AT 30-GEV/C AND 50-GEV/C

Cleland, W.E. ; Delfosse, A. ; Dorsaz, P.-A. ; et al.

Nucl.Phys.B 208 (1982) 228-261, 1982.

Inspire Record 184972 DOI 10.17182/hepdata.34061

The mass and momentum transfer spectra of the charged K K system produced in the reaction π ± p→K s 0 K ± p are analyzed. The data have been collected at the CERN SPS with the Geneva-Lausanne two-arm, non-magnetic spectrometer at 30 and 50 GeV/ c incident momenta. The general features of the reactions at these energies and the results of partial-wave analyses of the two kaon system are presented. The channel is dominated by the diffractive production of even spin resonances. The spin 4 recurrence of the A 2 (1320) is clearly observed at 2040 MeV ( Γ =380 MeV. A new resonance is observed with a mass M =2450MeV and a width Γ =400 MeV; the quantum numbers of this state are found to be I G ( J PC )=1 −(6 ++ ) . The analysis also shows the decay of the decay of the meson ϱ′(1600) through the K K channel at both energies. The production amplitudes are determined both as a function of the K K effective mass and of the momentum transfer. Isoscalar natural parity exchange is dominant. The energy dependence between 10 and 50 GeV/ c is shown to be well described by a Regge pole model based on the f-dominated pomeron hypothesis. We compare the production mechanisms of the 2 + resonances A 2 (1320) and K ∗ (1430). Finally, we estimate the K K branching ratios of the spin 4 A 2 (2040) and spin 6 A 2 (2450) resonances.

5 data tables

Table 1

No description provided.

Table 2

D(SIG)/DT FOR 50 GEV IN RESONANCE REGIONS.

Table 3

No description provided.

More…

STUDY OF THE REACTIONS K+- P ---> K0(S) PI+- P AT 30-GEV/C AND 50-GEV/C: DESCRIPTION OF THE APPARATUS AND AMPLITUDE ANALYSIS OF THE K0(S) PI SYSTEM

Cleland, W.E. ; Delfosse, A. ; Dorsaz, P.-A. ; et al.

Nucl.Phys.B 208 (1982) 189-227, 1982.

Inspire Record 184971 DOI 10.17182/hepdata.34081

The reactions K ± p→K s 0 π ± p are studied at 30 and 50 GeV/ c . Data for these reactions were obtained using the Geneva-Lausanne spectrometer whose main characteristics are: (i) large forward acceptance; (ii) high-resolution time-of-flight for recoil proton momentum measurement; (iii) high data-taking rate and on-line pattern recognition. The K ∗ (1 − ), K ∗ (2 + ), K ∗ (3 − ) and K ∗ (4 + ) resonance parameters and production cross sections are determined. The K π production amplitudes are calculated both as a function of the K π mass and of the momentum transfer. Isoscalar natural parity exchange (NPE) is dominant. The NPE amplitudes are decomposed into pomeron- f-, ω-exchange contributions, and their energy dependence between 10 and 50 GeV/ c is shown to be well-described by a Regge pole model based on the f-dominated pomeron hypothesis.

5 data tables

Table 1

CORRECTED TO INCLUDE BW TAILS AND THE FRACTION OF EVENTS OUTSIDE THE T-ACCEPTANCE OF THE SPECTROMETER.

Table 2

FITS OF THE FORM -A*TP*EXP(BTP) ARE MADE BY THE AUTHORS AND THE VALUES OF A AND B ARE GIVEN HERE. MASS REGIONS OF THE FIT ARE:-. K*(890) 0.84 < M <0.94 GEV. K*(1430) 1.36 < M <1.5 GEV. K*(1780) 1.68 < M <1.88 GEV.

Table 3

FITS OF FORM -A*TP*EXP(BTP) ARE MADE BY THE AUTHORS AND THE VALUES OF A AND B ARE GIVEN HERE. MASS REGIONS OF THE FIT ARE:-. K*(890) 0.84 < M <0.94 GEV. K*(1430) 1.36 < M <1.5 GEV. K*(1780) 1.68 < M <1.88 GEV.

More…

Pion - Proton Elastic Scattering at 20-{GeV}/$c$ and 50-{GeV}/$c$ Incident Momenta in the Momentum Transfer Range 0.7-{GeV}/$c < sqrt{t}< 8$-{GeV}/$c$

The Annecy(Lapp)-CERN-Bohr Inst-Genoa-Oslo-London collaboration Asad, Z. ; Baglin, C. ; Benso, S. ; et al.

Phys.Lett.B 118 (1982) 442, 1982.

Inspire Record 179091 DOI 10.17182/hepdata.30852

Measurements of the differential elastic cross sections for π − p scattering at incident momenta of 20 and 50 GeV c and π + p at 50 GeV c in the momentum transfer range 0.7 < |t|; < 8.0 ( GeV c ) 2 are presented. The data are compared with various models of elastic scattering.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Observation of a Dip at /T/ = 1.5-({GeV}/$c$)**2 in $\bar{p} p$ Elastic Scattering at 50-{GeV}/$c$

The Annecy(LAPP)-CERN-Bohr Inst-Genoa-Oslo-London collaboration Asad, Z. ; Baglin, C. ; Benso, S. ; et al.

Phys.Lett.B 108 (1982) 51, 1982.

Inspire Record 164883 DOI 10.17182/hepdata.31019

The p p elastic differential cross section at 50 GeV/c has been measured in a two-arm spectrometer experiment at the CERN SPS. The | t | range covered extends from 0.7 to 5 (GeV/c. A pronounced dip-bump structure is observed with a sharp minimum at | t | = 1.5 (GeV/ c ) 2 .

1 data table

Table 1

No description provided.

NEW RESULTS ON KAON - PROTON ELASTIC SCATTERING AT LARGE MOMENTUM TRANSFERS

The Annecy(LAPP)-CERN-Bohr Inst-Genoa-Oslo-London collaboration Asad, Z. ; Baglin, C. ; Bock, R. ; et al.

Phys.Lett.B 123 (1983) 265-268, 1983.

Inspire Record 182422 DOI 10.17182/hepdata.30730

Measurements of the K - p and K + p elastic differential cross sections at 20 and 50 GeV/ c , respectively, have been made in the momentum transfer range 0.7 < ∥ t ∥ < 8.0 GeV/ c .

2 data tables

Table 1

No description provided.

Table 2

No description provided.

QUASIELASTIC OMEGA PHOTOPRODUCTION AT 50-GEV - 130-GEV

Breakstone, A.M. ; Cheng, D.C. ; Dorfan, D.E. ; et al.

Phys.Rev.Lett. 47 (1981) 1782-1785, 1981.

Inspire Record 173081 DOI 10.17182/hepdata.20625

A study of quasielastic ω photoproduction where the ω was detected in its π0γ decay mode is reported. The recoil proton's angle was detected with a nonmagnetic spectrometer allowing a full reconstruction of the final state. Differential cross sections for 0.1<|t|<1.2 GeV2 are presented, providing a test of the vector-meson dominance model over an extensive energy and momentum transfer range. The shape of the differential cross section agrees with that seen in both elastic γp and πp scattering as expected from this model.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…