Matsyuk, M.A.
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A Study of Charged Pseudoscalar Meson Photoproduction From Hydrogen and Deuterium With 16-{GeV} Linearly Polarized Photons

Quinn, D.J. ; Rutherfoord, J.P. ; Shupe, M.A. ; et al.
Phys.Rev.D 20 (1979) 1553, 1979.
Inspire Record 140543 DOI 10.17182/hepdata.24208

The asymmetries in forward π−N, π−Δ, and K+−(Λ+Σ) photoproduction have been measured with a 16-GeV linearly polarized beam. The experimental method and the procedures for extracting cross sections and asymmetries from the data are discussed in detail. Information on the energy and momentum-transfer dependence of cross sections for natural- and unnatural-parity exchange, interference between exchanges of opposite G parity, and vector-meson dominance is obtained and discussed.

7 data tables
Table 1

ASYMMETRIES AND DIFFERENTIAL CROSS SECTIONS FOR PION-NUCLEON PHOTOPRODUCTION WERE FIRST PUBLISHED IN D. J. SHERDEN ET AL., PRL 30, 1230 (1973) AND PRL 31, 667 (1973) (ERRATUM). THESE SLIGHTLY REVISED NUMBERS ARE INCLUDED IN THE RECORD OF THE 1973 PAPER.

Table 2

No description provided.

Table 3

No description provided.

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A Measurement of the Nucleon Structure Functions

Anderson, H.L. ; Fine, R.M. ; Heisterberg, R.H. ; et al.
Phys.Rev.D 20 (1979) 2645, 1979.
Inspire Record 141067 DOI 10.17182/hepdata.4434

Measurements have been made of the inclusive scattering of 96, 147, and 219 GeV muons from hydrogen, and of 147 GeV muons from deuterium. Results are presented for the nucleon structure function F2(x,Q2) [≡νW2(x,Q2)] for 10<ν<200 GeV and 0.2<Q2<80 GeV2. The value of F2 rises with Q2 at small x, and falls with Q2 at large x, in agreement with the ideas of quantum chromodynamics. An average value of the ratio σLσT≡R=0.52±0.35 has been obtained for the region 0.003<x<0.10 and 0.4<Q2<30 GeV2. The values of F2 from this experiment have been combined with those from other charged-lepton scattering experiments to determine moments of the structure functions. The variation with Q2 of these moments is used to derive values for Λ, taking into account corrections up to second order in αs. The fit to the data is very good.

38 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of Hadrons at $p_T$ From 0.5-{GeV}/$c$ to 2.5-{GeV}/$c$ in Proton - Nucleus Collisions at 70-{GeV} Energy

Abramov, V.V. ; Alekseev, A.V. ; Baldin, B.Yu. ; et al.
Sov.J.Nucl.Phys. 31 (1980) 343, 1980.
Inspire Record 143799 DOI 10.17182/hepdata.18132

None

11 data tables
Table 1

PRELIMINARY DATA.

Table 2

PRELIMINARY DATA.

Table 3

No description provided.

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anti-LAMBDA HYPERON PRODUCTION IN pi- p, pi- n AND pi- C-12 INTERACTIONS

Dzhmukhadze, S.V. ; Dasaeva, M.A. ; Kladnitskaya, E.N. ; et al.
Sov.J.Nucl.Phys. 31 (1980) 210, 1980.
Inspire Record 143366 DOI 10.17182/hepdata.18158

None

15 data tables
Table 1

No description provided.

Table 2

INTERACTION WITH QUAZI FREE NUCLEONS ARE REJECTED.

Table 3

No description provided.

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PARTICLE MULTIPLICITIES AND MULTIPLICITY CORRELATIONS OBSERVED IN pi p COLLISIONS WITH HE NE NUCLEI IN A STREAMER CHAMBER

Allen, R.C. ; Kanofsky, A.S. ; Hasan, M.A. ;
Phys.Rev.C 27 (1983) 670-681, 1983.
Inspire Record 8194 DOI 10.17182/hepdata.38068

We have measured the multiplicities of particles emitted in collisions between π's and p's of 1.5 to 2.5 GeV/c momentum with He and Ne nuclei in a streamer chamber. The chamber gas served as the target as well as the detecting medium. Because of the low density and 4π solid angle of the detector, it was possible to detect nuclear fragments with energies less than 5 MeV, and to essentially count all the particles emitted in a collision. Event distributions as a function of track multiplicity were obtained as well as correlated event distributions. NUCLEAR REACTIONS He (proton or pion, fragments and pions), Ne (proton or pion, fragments and pions), E=1.5, 2.0, 2.5 BeV/c; streamer chamber gas used as target with fragment energies as low as 5 MeV. Measured multiplicities and correlations of produced particle types.

7 data tables
Table 1

CHARGED+ means PI+ or fast P, FRAGT - low momentum P or DEUT,TRIT,HE3,HE4, CHARGED- mostly PI-.

Table 2

CHARGED+ means PI+ or fast P, FRAGT - low momentum P or DEUT,TRIT,HE3,HE4, CHARGED- mostly PI-.

Table 3

CHARGED+ means PI+ or fast P, FRAGT - low momentum P or DEUT,TRIT,HE3,HE4, CHARGED- mostly PI-.

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Production of High Mass Muon Pairs in $\pi^-$ Be Collisions at 150-{GeV}/$c$ and 175-{GeV}/$c$

Barate, R. ; Bareyre, P. ; Bonamy, P. ; et al.
Phys.Rev.Lett. 43 (1979) 1541, 1979.
Inspire Record 142156 DOI 10.17182/hepdata.20768

This paper presents production and decay characteristics of 500 high-mass, high-resolution μ+μ− pairs produced in π− Be collisions at 150 and 175 GeV/c. The data do not agree with a simple Drell-Yan production mechanism, but indicate that higher-order quantum-chromodynamic corrections must be included.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


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.


AN AMPLITUDE ANALYSIS OF THE K+ K- SYSTEM PRODUCED IN THE REACTION PI- P ---> K+ K- N AT 10-GEV/C

The BARI-BONN-CERN-GLASGOW-LIVERPOOL-MILAN-VIENNA collaboration Costa, G. ; Donald, R.A. ; Edwards, D.N. ; et al.
Nucl.Phys.B 175 (1980) 402-434, 1980.
Inspire Record 159739 DOI 10.17182/hepdata.34458

We present results on an amplitude analysis of the K + K − system produced in the reaction π − p→K + K − n from threshold up to 2.2 GeV. The branching ratios of f 0 and f' to K K have been determined. In the low mass region of the K K system the observation of an S-wave enhancement at 1.3 GeV and the interference of the f 0 -A 2 -f' mesons are studied. We observe a 3 − structure in the mass region of 1.7 GeV which is consistent with g 0 production. With this interpretation the branching ratio g→ K K has been determined. Evidence for a new structure in the J p = 2 + wave around 1.8 GeV with a width of ∼200 MeV is presented.

2 data tables
Table 1

HELICITY ZERO D-WAVE AMPLITUDE FITTED BY SUM OF BREIT-WIGNER RESONANCES. F 14 GIVES T-DEPENDENCE. ALSO EVIDENCE FOR 1.8 GEV STATE WITH 0.60 +- 0.13 MUB PRODUCTION CROSS SECTION.

Table 2

FROM HELICITY ZERO F-WAVE AMPLITUDE ASSUMING PREDOMINANTLY G(1680)0 PRODUCTION. F 16 GIVES T-DEPENDENCE.


K*0 (890) POLARIZATION MEASUREMENTS IN THE HYPERCHARGE EXCHANGE REACTION PI- P ---> K*0 (890) LAMBDA0 / SIGMA0 AT 10-GEV/C

The BARI-BONN-CERN-DARESBURY-GLASGOW-LIVERPOOL-MILAN-VIENNA collaboration Evangelista, C. ; Ghidini, B. ; Palano, A. ; et al.
Nucl.Phys.B 165 (1980) 383-394, 1980.
Inspire Record 157497 DOI 10.17182/hepdata.34585

K ∗0 (890) production in the hyperchange exchange reaction π − p → K ∗0 (890) Λ 0 Σ 0 at 10 GeV/ c (28 448 events) is discussed. An amplitude analysis in the t ′ range up to 1 GeV 2 shows that the production mechanism is dominated by natural parity exchange (∼84%). Comparisons are made with predictions from a Regge model and a quark model.

2 data tables
Table 1

DENSITY MATRIX ELEMENTS IN THE GOTTFRIED-JACKSON SYSTEM ALLOWING FOR COHERENT S-WAVE BACKGROUND TO P-WAVE BREIT-WIGNER K*(892)0 RESONANCE.

Table 2

No description provided.


MEASUREMENT OF ELASTIC BACKWARD PI- D SCATTERING FOR 1.57-GEV/C, 1.66-GEV/C AND 1.76-GEV/C. (IN RUSSIAN)

Abramov, B.M. ; Ayrapetov, E.A. ; Bagdasaryan, L.S. ; et al.
Pisma Zh.Eksp.Teor.Fiz. 31 (1980) 147-150, 1980.
Inspire Record 157089 DOI 10.17182/hepdata.39767

None

1 data table