HEPData Search

We have analyzed the two-prong final states in π+p interactions at 3.9 GeVc. Our result for elastic scattering is σ (elastic) = 6.50±0.1 mb (statistical error only). We find the elastic slope to be 6.61±0.14 (GeVc)−2. We find the elastic forward cross section to be 40.0±1.4 mb(GeVc)2. We have applied a longitudinal-momentum analysis to the one-pion-production channel. We find the cross section for the reaction π++p→π++π0+p to be 2.30±0.06 mb and that for π++p→π++π++n to be 1.45±0.05 mb. For resonance-production cross sections in these channels we find Δ(1236)=0.60±0.07 mb, ρ(760)=0.86±0.06 mb, and diffraction dissociation = 1.69±0.11 mb. We find that we can satisfactorily fit all distributions in the one-pion-production channel without assuming any phase-space production. In the missing-mass channel we observe dominant Δ++(1236) production plus evidence for A2+ production.

15 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Investigation of the reaction pi- p ---> p x- at the momentum of 3.25 gev/c with high momentum transfer

Baloshin, O.N. ; Vladimirskii, V.V. ; Dukhovskoi, I.A. ; et al.

Yad.Fiz. 14 (1971) 131-133, 1971.

Inspire Record 69451 DOI 10.17182/hepdata.19279

None

1 data table

Table 1

No description provided.

Measurement of asymmetry of pi+ meson photoproduction unter large angles in the region of the first resonance

Kuznetsov, V.M. ; Stukov, O.I. ; Repenko, E.V. ; et al.

Yad.Fiz. 13 (1971) 1052-1055, 1971.

Inspire Record 69488 DOI 10.17182/hepdata.19290

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Pi- p interactions at 3.25 gev/c. two-prong events

Guzhavin, V.M. ; Vetlitskii, I.A. ; Kaidalov, A.B. ; et al.

Yad.Fiz. 14 (1971) 354-366, 1971.

Inspire Record 69448 DOI 10.17182/hepdata.19292

None

1 data table

Table 1

BREIT-WIGNER RESONANCE FITS WITH BACKGROUND.

Measurement of the electron-positron annihilation cross-section into pi+ pi-, k+ k- pairs at the total energy 1.18-1.34 gev

Balakin, V.E. ; Budker, G.I. ; Kurdadze, L.M. ; et al.

Phys.Lett.B 41 (1972) 205-208, 1972.

Inspire Record 75634 DOI 10.17182/hepdata.28229

Using the electron-position storage ring VEPP-2 an experiment has been performed in which the cross-sections of the reactions e + e − → π + π − and e + e − →K + K − were measured in the energy regi on 1.18–1.34 GeV. The experimental values of the formfactors lie higher than curves extrapolated from the ϱ- and ϕ-meson region.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Polarized target asymmetry for pi-zero photoproduction at 4 gev

Booth, P.S.L. ; Court, G.R. ; Craven, B. ; et al.

Phys.Lett.B 38 (1972) 339-341, 1972.

Inspire Record 75858 DOI 10.17182/hepdata.28336

The polarized target asymmetry parameter has been measured for single π o photoproduction from hydrogen at 4 GeV and values of four-momentum transfer squared between −0.15 (GeV/ c ) 2 and −1.8 (GeV/ c ) 2 .

1 data table

Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Search for magnetic monopoles at the 70 gev iphe proton synchrotron

Gurevich, I.I. ; Khakimov, S.K. ; Martemyanov, V.P. ; et al.

Phys.Lett.B 38 (1972) 549-550, 1972.

Inspire Record 75823 DOI 10.17182/hepdata.28325

The result of a search for magnetic charged particles at 70 GeV IPHE proton synchrotron is presented. Using the ferromagnetic trap method the upper limit of the magnetic monopole production cross-section in proton-nucleon collisions was found to be α (95%) ⩾ × 10 −43 cm 2 .

1 data table

Table 1

No description provided.

Average charged particle multiplicity and topological cross-sections in 50-GeV/c and 69-GeV/c p p interactions

Ammosov, V.V. ; Boitsov, V.N. ; Ermolov, P.F. ; et al.

Phys.Lett.B 42 (1972) 519-521, 1972.

Inspire Record 74383 DOI 10.17182/hepdata.28174

In an exposure of the chamber Mirabelle at the Serpukhov accelerator, 1 943 interactions at 50 GeV/ c and 8 959 at 69 GeV/ c have been observed. Topological cross sections and charged multiplicity distributions are presented. The average charged multiplicities found are respectively 5.32 ± 0.13 and 5.89 ± 0.07.

1 data table

Table 1

2PRONG INELASTIC CROSS SECTIONS DERIVED BY SUBTRACTION OF OTHER PRONG CROSS SECTIONS AND KNOWN ELASTIC MEASUREMENTS FROM THE TOTAL.

Study of the backward rho- meson production in reaction pi- p ---> p rho- within the incident momentum interval 1.80 to 3.25 gev/c.

Vladimirskii, V.V. ; Dzhelyadin, R.I. ; Dukhovskoi, I.A. ; et al.

Yad.Fiz. 17 (1973) 788-792, 1973.

Inspire Record 85120 DOI 10.17182/hepdata.19251

None

1 data table

Table 1

No description provided.

Proton Compton scattering between 650 mev and 1350 mev

Barton, J.S. ; Booth, P.S.L. ; Carroll, L.J. ; et al.

Phys.Lett.B 42 (1972) 297-300, 1972.

Inspire Record 85012 DOI 10.17182/hepdata.28187

Compton scattering from protons has been measured between 650 MeV and 1350 MeV for angles between 60° and 140° CM.

1 data table

Table 1

No description provided.

Observation of multihadronic events in e+ e- collisions at the energy of 1.18-1.34 gev

Kurdadze, L.M. ; Onuchin, A.P. ; Serednyakov, S.I. ; et al.

Phys.Lett.B 42 (1972) 515-518, 1972.

Inspire Record 84975 DOI 10.17182/hepdata.28190

Using the electron-positron storage ring VEPP-2 multipionic events have been observed at a total energy of 1.18–1.34 GeV. The experimental cross-section appears to be considerably larger than calculated within the framework of the vector dominance model for the processes e + e − → ϱπ , ϱϵ , ωπ , A 1 π . The data on the total cross-section obtained in the framework of the statistical model with 4 pions are presented.

1 data table

Table 1

DATA VALUES MEASURED OFF GRAPH IN JOURNAL. VALUES OF R CALCULATED FROM TOTAL MULTIHADRONIC CROSS SECTION.

ON INVESTIGATING ENERGY DEPENDENCE OF CROSS-SECTION FOR pi- MESON ELASTIC SCATTERING ON PROTONS IN THE INTERVAL 33-GeV/c TO 55-GeV/c

Derevshchikov, A.A. ; Matulenko, Yu.A. ; Meshchanin, A.P. ; et al.

Nucl.Phys.B 80 (1974) 442-460, 1974.

Inspire Record 80729 DOI 10.17182/hepdata.32174

The π − p differential elastic scattering cross sections have been measured for eight momenta in the 33–55 GeV/ c range. The energy dependence of the slope and of the total elastic scattering cross sections has been determined experimentally. The results are compared with the known data. The experimental data are compared both with the Regge pole model and with the quasi-potential one.

9 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

The Missing Mass Squared Dependence of the Average Charged Particle Multiplicity in the Reaction K+ p --> K0 X++ from 5-GeV/c-16-GeV/c

Chliapnikov, P.V. ; Gerdyukov, L.N. ; Minaev, N.G. ; et al.

Phys.Lett.B 52 (1974) 375-380, 1974.

Inspire Record 90218 DOI 10.17182/hepdata.50028

The average charged particle multiplicity, 〈 n ch ( M X 2 )〉, in the reaction K + p→K o X ++ is studied as a function of the mass squared, M X 2 , of the recoil system X and also as a function of the K o transverse momentum, p T , at incident momenta of 5.0, 8.2 and 16.0 GeV/ c . The complete data samples yield distributions which are not independent of c.m. energy squared, s , They exhibit a linear dependence on log ( M X 2 X / M o 2 )[ M o 2 =1 GeV 2 ] with a change in slope occurring for M X 2 ≈ s /2, and do not agree with the corresponding distributions of 〈 n ch 〉 as a function of s for K + p inelastic scattering. Sub-samples of the data for which K o production via beam fragmentation, central production and target fragmentation are expected to be the dominant mechanisms show that, within error, the distribution of 〈 n ch ( M X 2 )〉 versus M X 2 is independent of incident momentum for each sub-sample separately. In particular in the beam fragmentation region the 〈 n ch ( M X 2 )〉 versus M X 2 distribution agrees rather well with that of 〈 n ch 〉 versus s for inelastic K + p interactions. The latter result agrees with recent results on the reactions pp → pX and π − p → pX in the NAL energy range. Evidence is presented for the presence of different production mechanisms in these separate regions.

1 data table

Table 1

Two parametrizations are used for fitting of the mean multiplicity of the charged particles : MULT = CONST(C=A) + CONST(C=B)*LOG(M(P=4 5)**2/GEV**2) and MULT = CONST(C=ALPHA)**(M(P=4 5)**2/GEV**2)**POWER.

Production of pi+ Mesons Induced by Polarized Photons in the Energy Range 220-MeV-280-MeV

Zabaev, V.N. ; Kuznetsov, V.M. ; Potylitsyn, A.P. ; et al.

Yad.Fiz. 21 (1975) 551-555, 1975.

Inspire Record 102841 DOI 10.17182/hepdata.19144

None

11 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

The Reaction pi- d --> d x- with High Momentum Transfer at 1.25-GeV/c and 1.48-GeV/c

Abramov, B.M. ; Dukhovskoi, I.A. ; Kishkurno, V.V. ; et al.

Sov.J.Nucl.Phys. 23 (1976) 194, 1976.

Inspire Record 100912 DOI 10.17182/hepdata.18354

None

1 data table

Table 1

No description provided.

Resonance Production in the Reactions pi+ d --> p(s) p pi+ pi- and pi+ d --> p(s) p pi+ pi- pi0 at 11.7-GeV/c

Kemp, D. ; Lotts, A.P. ; Scarrott, S.M. ; et al.

Nuovo Cim.A 27 (1975) 155-173, 1975.

Inspire Record 102951 DOI 10.17182/hepdata.37719

Results are presented for the reactions (1) π+n→pπ+π−, (2) π+n→pπ+π−π0, at an incident pion beam momentum of 11.7 GeV/c. Both reactions show considerable resonance production. Reaction (1) is dominated by ρ0 and f0 production and there is evidence for the variation of the ρ00 width with momentum transfer. Decay angular distributions are presented for the dipion system observed in reaction (1). Reaction (2) shows the production of both dipion and tripion resonances and there is evidence for the associated production of$\mathcal{N}$-resonances with the dipion resonances.

4 data tables

Table 1

No description provided.

Table 2

DN/DT PLOTTED. ALL RESONANCES ARE DEFINED JUST BY MASS CUTS.

Table 3

RHO0 MASS REGION OF DIPION SYSTEM. NUMERICAL VALUES TAKEN FROM TABLE 6.1 OF THE THESIS BY D. KEMP (DURHAM 1974).

More…

pi- Meson Elastic Scattering on Proton in the Coulomb-Nuclear Interference Region for Momentum Range from 33-GeV/c Up to 60-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.

Sov.J.Nucl.Phys. 24 (1976) 49, 1976.

Inspire Record 99591 DOI 10.17182/hepdata.35863

None

10 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Study of the Inclusive Reaction K+ p --> K0 Anything at 5-GeV/c, 8.2-GeV/c and 16-GeV/c in the Central Region

Chliapnikov, P.V. ; Gerdyukov, L.N. ; Lugovsky, S.B. ; et al.

Nucl.Phys.B 97 (1975) 1-10, 1975.

Inspire Record 99425 DOI 10.17182/hepdata.31898

The inclusive reaction K + p → K 0 + X is studied at 5, 8.2 and 16 GeV/ c . The energy dependence and the shapes of inclusive spectra in the central region are found to be consistent with double-Regge expansion. With the values obtained for the parameters of the Regge expansion, prediction are made for the behaviour of the cross section at higher energies.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Polarization Measurements in pi- p, K- p and p p Elastic Scattering at 40-GeV/c

The Saclay-Serpukhov-Dubna-Morsoc collaboration Gaidot, A. ; Bruneton, C. ; Bystricky, J. ; et al.

Phys.Lett.B 57 (1975) 389-392, 1975.

Inspire Record 99592 DOI 10.17182/hepdata.27840

We report final results on the polarization parameter P in elastic scattering of π − , K − and antiprotons at 40 GeV/ c incident momentum. The energy dependence of P (t) in π − p above 10 GeV/ c is well fitted by P (t) α s αR(t)-α P (t) where α R (t) are the effective Regge and Pomeron trajectories respectively. The data in K − p are compatible with exchange degeneracy. The results inp¯p show an important structure for |t|> 0.3 (GeV/c) 2 demonstrating the existence of a large helicity flip amplitude.

3 data tables

Table 1

Table 2

Table 3

Anti-p p Annihilations Into Four and Five Pion Final States in the t (2190) Region

Handler, T. ; Jacques, P. ; Jones, M. ; et al.

Nucl.Phys.B 101 (1975) 35, 1975.

Inspire Record 99552 DOI 10.17182/hepdata.36053

New data from a 600 000 picture exposure of the BNL 31 inch hydrogen bubble chamber to a separated antiproton beam have been analyzed to try to determine if the π + π − π + π − or π + π − π + π − π 0 final states contribute any broad or narrow structure in the T(2190) region. The resonance channel fractions determined by maximum likelihood fits are all consistent with smooth behavior through the T-region and therefore there is no significant evidence that any of these resonance channels contributes to the broad bump in the total cross section. The errors on some of the fractions, however, limit the sensitivity to ∼ 0.5 mb for enhancements in these channels.

2 data tables

Table 1

RESONANCE CHANNEL PERCENTAGES FROM FIT TO PI+ PI- PI+ PI- FINAL STATE.

Table 2

RESONANCE CHANNEL PERCENTAGES FROM FIT TO PI+ PI- PI+ PI- PI0 FINAL STATE.

Inclusive Delta++ Production in K+ p Interactions at 8.2-GeV/c and 16-GeV/c

Chliapnikov, P.V. ; Gumenyuk, S.A. ; Rubin, A.M. ; et al.

Nucl.Phys.B 105 (1976) 510-526, 1976.

Inspire Record 101055 DOI 10.17182/hepdata.35924

The reaction K + p→ Δ ++ (1236)+ anything is studied at beam momenta 8.2 and 16 GeV/ c and compared with other Δ ++ producing reactions. We find that the low-mass Δ ++ π − enhancement affects the shapes of Δ ++ inclusive distributions. The triple-Regge formula is found to be consistent with the data. Dual properties of this formula are successfully tested.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Elastic pi+ p, K+ p and p p Scattering in the Region of Coulomb-Nuclear Interference at Momenta 42.5-GeV/c and 52.2-GeV/c

Apokin, V.D. ; Vasiliev, A.N. ; Derevshchikov, A.A. ; et al.

Yad.Fiz. 25 (1977) 94-102, 1977.

Inspire Record 108613 DOI 10.17182/hepdata.19035

None

18 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

On Measuring the Spin Rotation Parameter in Elastic p p and pi+ p Scattering at 45-GeV/c

Bruneton, C. ; Bystricky, J. ; Gaidot, A. ; et al.

Yad.Fiz. 24 (1976) 762-765, 1976.

Inspire Record 108609 DOI 10.17182/hepdata.19050

None

1 data table

Table 1

No description provided.

Polarization in Elastic Scattering of pi+, K+ Mesons and Protons on Protons at 45-GeV/c

The Serpukhov-Saclay-Dubna-Moscow collaboration Bruneton, C. ; Bystricky, J. ; Gaidot, A. ; et al.

Sov.J.Nucl.Phys. 25 (1977) 198, 1977.

Inspire Record 108993 DOI 10.17182/hepdata.19052

1 data table

Table 1

No description provided.

Study of Slow Inclusive Protons in K+ p Interactions at 16-GeV/c

The Birmingham-Brussels-CERN-Mons-Serpukhov collaboration Azhinenko, I.V. ; Chliapnikov, P.V. ; Gorbunov, P.A. ; et al.

Nucl.Phys.B 123 (1977) 493-506, 1977.

Inspire Record 110287 DOI 10.17182/hepdata.35382

The reaction K + p → p + X is studied at a beam momentum of 16 GeV/ c using the events where a slow proton with momentum p lab < 1.2 GeV/ c is identified by its bubble density. The inclusive spectra presented and compared with those obtained in K + p interactions at 32 GeV/ c and K − p interactions at 14.3 GeV/ c . The prominent features associated with a triple-Regge formula are found to be consistent with the data. It is shown that the Δ ++ (1236) production strongly affects the shape of the inclusive spectra and the results of the triple-Regge fit. After removal of events associated with Δ ++ (1236) production, the data are consistent with the dominance of an ffR coupling.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Elastic Scattering of pi+- p, K+- p, p p and anti-p p at 40-GeV/c

Kazarinov, Yu.M. ; Kazarinov, M.Yu. ; Khachaturov, B. ; et al.

Nucl.Phys.B 124 (1977) 391-408, 1977.

Inspire Record 110709 DOI 10.17182/hepdata.35427

The differential cross sections for elastic π − p, K − p , p p and π + p, pp scattering at 39 and 44.5 GeV/ c , respectively, have been measured in the interval of momentum transfer squared 0.15 ≤ ovbt | ≤ 2 (GeV/ c ) 2 .

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

The Polarized Target Asymmetry for Neutral Pion Photoproduction from Protons in the Photon Energy Range 0.7-GeV-1.45-GeV

Booth, P.S.L. ; Carroll, L.J. ; Court, G.R. ; et al.

Nucl.Phys.B 121 (1977) 45-57, 1977.

Inspire Record 111591 DOI 10.17182/hepdata.35454

Measurements have been made of the target asymmetry parameter for photoproduction of π 0 mesons from protons, using a butanol polarised target with a 3 He cryostat. Results were obtained at 14 incident photon energies between 0.7 GeV and 1.45 GeV over an angular range ∼40° to 145° c.m. The recent analysis of Barbour and Crawford provides a very good fit to the data.

14 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Single and Double Diffraction Dissociation in K+ p Interactions at 32-GeV/c

The French-Soviet & CERN-Soviet collaborations Saudraix, J. ; Denegri, D. ; Loret, M. ; et al.

SACLAY-DPhPE 77-19, 1977.

Inspire Record 121747 DOI 10.17182/hepdata.19296

None

1 data table

Table 1

No description provided.

CHARGED CURRENT NEUTRINO INTERACTIONS BELOW 30-GeV

Asratian, A.E. ; Bugorsky, A.P. ; Epshtein, V.Sh. ; et al.

Phys.Lett.B 76 (1978) 239-242, 1978.

Inspire Record 130941 DOI 10.17182/hepdata.26951

Charged current data of a spark chamber neutrino experiment at the 70 GeV Serpukhov accelerator (10 200 events in the v beam and 3600 events in the v beam with energies up to 30 GeV) have been analyzed. Total neutrino and antineutrino cross sections and v -distributions are obtained.

2 data tables

Table 1

Measured charged current total cross section.

Table 2

Measured charged current total cross section.

Polarization Measurement of the $\Sigma^+$ Produced in the Line Reversed Reactions $\pi^+ p \to K^+ \Sigma^+$ and $K^- p \to \pi^- \Sigma^+$ at 7-{GeV}/$c$ and 11.6-{GeV}/$c$

Baker, P.A. ; Chima, J.S. ; Dornan, P.J. ; et al.

Phys.Rev.Lett. 40 (1978) 678, 1978.

Inspire Record 129108 DOI 10.17182/hepdata.20914

The polarization of the Σ+ has been measured for the line-reversed reactions π+p→K+Σ+ and K−p→π−Σ+ at 7 and 11.6 GeV/c using the SLAC Hybrid Facility. Since the Σ+ decay is observed in the bubble chamber, the trigger of the flash lamps on a fast K+(π−) did not bias the polarization measurements. We find that the Σ+ polarizations from the two reactions have opposite signs but similar magnitudes and are in much better agreement with the predictions of weak exchange degeneracy than previous lower-energy comparisons.

1 data table

Table 1

No description provided.

Pion Form-Factor Measurement from e+ e- --> pi+ pi- Near Threshold by electron-Positron Colliding Beams

Vasserman, I.B. ; Ivanov, P.M. ; Koop, I.A. ; et al.

Yad.Fiz. 28 (1978) 968-971, 1978.

Inspire Record 136394 DOI 10.17182/hepdata.19016

None

1 data table

Table 1

No description provided.

Reaction K- n --> Lambda0 pi- from 1550-MeV to 1650-MeV

Morris, W.A. ; Albright, John R. ; Colleraine, A.P. ; et al.

Phys.Rev.D 17 (1978) 55-61, 1978.

Inspire Record 134419 DOI 10.17182/hepdata.24402

This paper presents the results of a study of the reaction K−d→(ps)Λ0π−. The cross section for the process K−n→Λ0π− has been measured as a function of the center-of-mass energy in the range from 1550 to 1650 MeV. An energy-dependent partial-wave analysis was performed for this reaction, and two acceptable solutions were found. The first solution indicated no resonant structure in this energy range below the Σ(1670). The second solution indicated resonant structure in the S11 partial wave with ER=1600±6 MeV/c2, Γ(ER)=87±19 MeV/c2, and x=0.12±0.02.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Measurements of $\pi^- p$ Elastic Scattering in the Coulomb Interference Region at High-energies

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

Phys.Lett.B 77 (1978) 438-442, 1978.

Inspire Record 131449 DOI 10.17182/hepdata.27428

The differential cross section has been measured at 30, 50, 80, 100, 120 and 140 GeV/ c for 0.002 < | t | < 0.04 ( GeV / c ) 2 . The results show that the π − p real part goes from negative to positive values below 80 GeV/ c . The slope parameter in the t -region measured is significantly higher than what has been found − t = 0.2 (GeV/ c ) 2 .

1 data table

Table 1

FROM FIT TO D(SIG)/DT AND SIGMA TOTAL FOR -T = 0.002 TO 0.04 (0.02 AT 30 GEV/C AND 0.03 AT 140 GEV/C) GEV**2.

Measurements of the $\nu_\mu N$ Total Cross-section at 2-{GeV} - 30-{GeV} in Skat Neutrino Experiment

Baranov, D.S. ; Bugorsky, A.P. ; Ivanilov, A.A. ; et al.

Phys.Lett.B 81 (1979) 255-257, 1979.

Inspire Record 130963 DOI 10.17182/hepdata.26940

Data on the measurement of the v μ N total cross section at 2–30 GeV are presented. The observed behavior does not contradict a linear dependence on neutrino energy with slope S =0.73 ± 0.08.

1 data table

Table 1

Measured charged current total cross section.

Study of the Inclusive Reactions $K^+ p \to p$ X and $K^+ p \to p K^0$ X at 32-{GeV}/$c$

The French-Soviet & CERN-Soviet collaborations Laurent, J. ; Dujardin, C. ; Grard, F. ; et al.

Nucl.Phys.B 149 (1979) 189-210, 1979.

Inspire Record 132914 DOI 10.17182/hepdata.34832

The inclusive production of protons with laboratory momentum less than 1.2 GeV/ c is studied in the reacion K + p → pX at 32 GeV/ c . A comparison with the 16 GeV/ c data shows ahat the total cross section remains practically constant while the structure function shows a clear energy dependence. The data are compatible with a tripls-Regge expansion and with factorization. About 40% of the events include a K 0 in the final state. The analysis of the K 0 pX sample indicates a sizeable contribution of beam fragmentation and abundant K 890 ∗ and Δ ++ production.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

K+ P AND K- P ELASTIC SCATTERING AT 32.1-GEV/C. FRANCE-SOVIET UNION AND CERN-SOVIET UNION COLLABORATIONS

Lewin, C. ; Denegri, D. ; Givernaud, A. ; et al.

Z.Phys.C 3 (1979) 275-284, 1979.

Inspire Record 148166 DOI 10.17182/hepdata.15899

None

2 data tables

Table 1

CROSS-OVER IS AT -T = 0.17 +- 0.02 GEV**2. DIVIDE BY 20 TO GET D(SIG)/DT IN MB/GEV**2. CORRECTED FOR LOST EVENTS FOR -T < 0.12 GEV**2.

Table 2

FROM QUADRATIC EXPONENTIAL FIT TO D(SIG)/DT. BOTH STATISTICAL AND SYSTEMATIC ERRORS INCLUDED IN VALUES.

OBSERVATION OF ENERGY DEPENDENT STRUCTURE IN BACKWARD pi- d ELASTIC SCATTERING BETWEEN 0.98-GeV/c AND 1.45-GeV/c

Abramov, B.M. ; Ayrapetov, E.A. ; Bagdasaryan, L.S. ; et al.

ITEP-21-1979, 1979.

Inspire Record 140929 DOI 10.17182/hepdata.40258

None

1 data table

Table 1

BEAM ERROR D(P)/P = 0.300 PCT.

Inclusive Strange Particle Production in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Borovikov, A.A. ; et al.

Nucl.Phys.B 165 (1980) 1-18, 1980.

Inspire Record 141734 DOI 10.17182/hepdata.8000

The production of K s 0 , Λ and Λ is measured in π + p interactions at 32 GeV/ c . The total inclusive cross sections are found to be 2.07±0.14, 1.00±0.10 and 0.14±0.04 mb, respectively. The energy dependence of total inclusive cross sections and inclusive distributions is discussed and a comparison is made with p, p , K + and K − induced reactions. We find that the factorization hypothesis is satisfied for the inclusive reactions π + p→ Λ X and K + p→ Λ X. Multi-strange-particle production is similar in π + p and K + p interactions at 32 GeV/ c . There is evidence for beam fragmentation in Λ production. The hierarchy of Λ inclusive cross sections in p , K + , π + and K − induced reactions at 32 GeV/ c is qualitatively explained by a quark recombination model. The cross sections for inclusive K ∗ + (892) and Σ + (1385) production in 32 GeV/ c π + p interactions are 1.07±0.57 mb and 0.19±0.08 mb, respectively.

12 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Study of the Inclusive Reaction $K^+ p \to \Delta^{++}$ (1236) X0 at 32-{GeV}/$c$

The French-Soviet & CERN-Soviet collaborations Chliapnikov, P.V. ; Gorbunov, P.A. ; Klimenko, S.V. ; et al.

Nucl.Phys.B 164 (1980) 189-213, 1980.

Inspire Record 141735 DOI 10.17182/hepdata.8244

Inclusive production of Δ ++ (1232) with >| t p, Δ ++>|<0.6 (GeV/ c ) 2 is studied in 32 GeV/ c K + p interactions. A systematic comparison with the reaction K + p→pX for >| t p,p>| < 0.6 (GeV/ c ) 2 is made. The production properties of the Δ ++ (1232), of associated π + , π − and K 0 production and of the recoiling system X 0 are investigated in detail. The polarization of the Δ ++ and the energy dependence of the total K + π − cross sections, determined by a Chew-Low extrapolation, are presented and discussed.

6 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Inclusive Production of Pions and $\rho^0$ in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Chliapnikov, P.V. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 628, 1980.

Inspire Record 143792 DOI 10.17182/hepdata.2720

None

48 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Cross-sections and Multiplicity Distributions for $K^+ p$ Interactions at 70-{GeV}/$c$

Barth, M. ; De Clercq, C. ; De Wolf, E. ; et al.

Z.Phys.C 2 (1979) 285, 1979.

Inspire Record 141693 DOI 10.17182/hepdata.2107

Cross sections and charged multiplicity distributions forK+p interactions at 70 GeV/c are presented and compared withK+p data at other energies. Comparisons are also made with available π+p,pp, andK−p data.

2 data tables

Table 1

No description provided.

Table 2

No description provided.

Elastic Scattering and Charged Particle Multiplicity in 32-{GeV}/$c \pi^+ p$ Interactions

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Bryzgalov, V.V. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 337, 1980.

Inspire Record 144012 DOI 10.17182/hepdata.18936

None

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Hadron Production at Transverse Momenta From 0.5-{GeV} Up to 2.2-{GeV}/c in Proton Proton Collisions at 70-{GeV}

Abramov, V.V. ; Alekseev, A.V. ; Baldin, B.Yu. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 484, 1980.

Inspire Record 143797 DOI 10.17182/hepdata.34474

The cross sections for π ± , K ± , p, and p production in pp collisions have been measured at transverse momenta from 0.48 up to 2.21 GeV/ c at 70 GeV. The data are compared with results obtained at lower and higher proton energies and also with the quantum chromodynamics parton model (QPM) calculations. Common behaviour of the cross sections of the form g(p ⊥ )⨍(x ⊥ ) in the energy range above 200 GeV does not take place at lower energies. Qualitatively QPM fits the data and the best agreement is for π + / π − and K + / π + ratios.

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

Inclusive Slow Proton and $\Delta^{++}$ (1236) Resonance Production in $\pi^+ p$ Interactions at 32-{GeV}/$c$

Azhinenko, I.V. ; Belokopytov, Yu.A. ; Chliapnikov, P.V. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 494, 1980.

Inspire Record 144016 DOI 10.17182/hepdata.18016

None

15 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

More…

SIGMA+ AND Y*+ (1385) PRODUCTION IN LINE REVERSED pi+ p AND K- p REACTIONS AT 7-GeV/c

Baker, P.A. ; Chima, J.S. ; Dornan, P.J. ; et al.

Nucl.Phys.B 166 (1980) 207-232, 1980.

Inspire Record 8326 DOI 10.17182/hepdata.34548

We have studied hypercharge exchange in two pairs of line-reversed reactions at 7 GeV/ c incident beam momentum in a triggered bubble chamber experiment at the SLAC Hybrid Facility. The experiment was carried out with the particular object of testing the predictions of exchange degeneracy using the same apparatus. We present differential and total cross sections for the reactions π + p → K + Σ + , K − p →π − Σ + and π + p → K + Y ∗+ (1385), K − p →π − Y ∗+ (1385) from a π + exposure of sensitivity 150 events/μb and a K − exposure of 100 events/μb. In each case we have measured the polarization of the final-state hyperon for | t |<1.0 (GeV/ c ) 2 by direct observation of its decay in the bubble chamber. We present results from an amplitude analysis of the Y ∗ (1385) reactions and find agreement with the predictions of the additive quark model. The Σ + polarization data are consistent with weak exchange degeneracy but the predicted equality of the differential cross section is not observed.

11 data tables

Table 1

Axis error includes +- 10/10 contribution.

Table 2

Axis error includes +- 10/10 contribution.

Table 3

INCREASED STATISTICS OVER EARLIER RESULTS REPORTED IN P. A. BAKER ET AL., PRL 40, 678 (1978).

More…

Production of Hadrons With Transverse Momentum in the Range 0.5-{GeV}/$c$ to 2.2-{GeV}/$c$ in $p d$ Collisions at 70-{GeV}

Abramov, V.V. ; Alekseev, A.V. ; Baldin, B.Yu. ; et al.

Sov.J.Nucl.Phys. 31 (1980) 770, 1980.

Inspire Record 144018 DOI 10.17182/hepdata.41485

None

2 data tables

Table 1

Table 2

K+ p, K- p AND anti-p p ELASTIC SCATTERING AT 32.1-GeV/c

The French-Soviet & CERN-Soviet collaborations Lewin, C. ; Denegri, D. ; Givernaud, A. ; et al.

SACLAY-DPhPE-79-19, 1979.

Inspire Record 144202 DOI 10.17182/hepdata.43800

None

3 data tables

Table 1

THESE DATA ARE TABULATED IN THE RECORD OF THE PUBLISHED VERSION.

Table 2

DIVIDE BY 20 TO GET MB/GEV**2.

Table 3

FROM QUADRATIC EXPONENTIAL FITS TO D(SIG)/DT FOR -T = 0 TO 1.4 GEV**2. SYSTEMATIC ERRORS INCLUDED.

VECTOR MESON PRODUCTION IN HYPERCHARGE EXCHANGE REACTIONS AT 7-GeV/c AND 11.5-GeV/c

Ballam, Joseph ; Brau, J. ; Bouchez, J. ; et al.

Nucl.Phys.B 166 (1980) 189-206, 1980.

Inspire Record 143136 DOI 10.17182/hepdata.34582

Results are presented on vector meson production in the hypercharge exchange reactions: π + p → K ∗+ (890) Y + and K − p→ ρ − Y + where Y + is either Σ + or Y ∗+ (1385). These reactions have been studied at 7 GeV/ c and 11.5 GeV/ c using the SLAC Hybrid Facility. Total and differential cross sections, hyperon polarization, and vector meson decay angular distributions are presented. We find that reactions with Σ + production are dominated by natural parity exchange. The Y ∗ (1385) reactions are consistent with substantial natural parity exchange contributions but also show significant unnatural parity exchange. The differential cross sections and polarization measurements for the vector meson production are compared to the pseudoscalar production reactions.

7 data tables

Table 1

Axis error includes +- 20/20 contribution.

Table 2

Axis error includes +- 20/20 contribution.

Table 3

Axis error includes +- 20/20 contribution.