Date

Large Momentum Transfer Elastic Scattering of $\pi^{\pm}, K^{\pm}$, and $\rho^{\pm}$ on Protons at 100 GeV/c and 200 GeV/c

Rubinstein, R. ; Baker, W.F. ; Eartly, David P. ; et al.
Phys.Rev.D 30 (1984) 1413, 1984.
Inspire Record 202682 DOI 10.17182/hepdata.23648

Results are presented on π±p, K±p, and p±p elastic scattering measured with an apparatus having acceptance of 0.5<−t<2.5 (GeV/c)2 and 0.9<−t<11 (GeV/c)2 at 100 and 200 GeV/c, respectively. A diffractionlike dip is seen for the first time in the π−p t distribution at −t=4 (GeV/c)2. All meson-proton cross sections are found to be similar in the range 1<−t<2.5 (GeV/c)2, although some small systematic differences are observed. Cross sections for pp and p―p are compared with previous data.

4 data tables

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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

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

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

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


A STUDY OF THE K pi SYSTEM IN THE REACTION K- p ---> anti-K0 pi- p AT 8.25-GeV/c

The Birmingham-CERN-Glasgow-Michigan State-Paris collaboration Baubillier, M. ; Bloodworth, I.J. ; Burns, A.J. ; et al.
Z.Phys.C 26 (1984) 37, 1984.
Inspire Record 202455 DOI 10.17182/hepdata.47964

The production ofK* resonances has been studied in the reaction\(K^ -p \to \bar K^0 \pi ^ -p\) at 8.25 GeV/c. The data comes from a high statistics bubble chamber experiment (180 events/μb). Masses, widths and production cross-sections have been determined for the first threeK*'s. The contributions from natural and unnatural parity exchange have been obtained for theK*(890) and theK*(1420). A partial wave analysis of theK π system from threshold to 1.9 GeV provides evidence for a 0+ enhancement near 1.4 GeV which could be interpreted as the κ(1350).

6 data tables

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FULLY CORRECTED.

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The Reactions $K^- p \to \pi^\mp \Sigma^\pm$ (1385) at 8.25-{GeV}/$c$

The Birmingham-CERN-Glasgow-Michigan State-Paris collaboration Baubillier, M. ; Bloodworth, I.J. ; Burns, A. ; et al.
Z.Phys.C 23 (1984) 213, 1984.
Inspire Record 199642 DOI 10.17182/hepdata.16327

The reactionsK−p→π∓Σ(1385)± are studied at an incident laboratory momentum of 8.25 GeV/c using data from a high statistics (≃180 events/μb) bubble chamber experiment. In the case of the reactionK−p→π−Σ(1385)+ an amplitude analysis is performed and the complete Σ(1385)+ spin density matrix is extracted as a function oft′. The results are compared with the predictions of the additive quark model. In the case of the reactionK−p→π+Σ(1385)− the cross-sections for forward and backward production are determined.

7 data tables

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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

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MEASUREMENT OF SMALL ANGLE ELASTIC P (polarized) D SCATTERING AT 796-MEV USING A RECOIL METHOD

Irom, F. ; Igo, G.J. ; Mcclelland, J.B. ; et al.
Phys.Rev.C 28 (1983) 2380-2385, 1983.
Inspire Record 203585 DOI 10.17182/hepdata.26330

The energy spectra of deuterons recoiling from a deuterium gas target bombarded by transversely polarized 796-MeV protons have been measured to obtain the differential cross sections, dσdt, and analyzing powers, Ay(t), for p→-d elastic scattering over a range of laboratory angles from 4.53° to 13.02°, corresponding to a range of four-momentum transfer squared, |t|, from 0.013 to 0.108 GeV2/c2. Employing several sets of nucleon-nucleon, N-N, amplitudes obtained from N-N phase shift analyses, comparisons are made between the experimental data and the predictions of a multiple scattering theory. In this region of four-momentum transfer, Ay is shown to depend almost entirely on the spin-independent and spin-orbit N-N amplitudes. NUCLEAR REACTIONS d(p→, p)d, E=796 MeV; measured dσdt(θ) and Ay(θ); comparison with multiple-scattering theory using free N-N amplitudes, −t=0.013−0.108 GeV2/c2, Δt=1.88×10−3 GeV2/c2.

1 data table

X ERROR D(-T) = 0.0019 GEV**2.


A MEASUREMENT OF THE ANTI-P P DIFFERENTIAL ELASTIC CROSS-SECTION AND OF THE COULOMB - NUCLEAR INTERFERENCE BETWEEN 353-MEV/C AND 578-MEV/C

Cresti, M. ; Peruzzo, L. ; Sartori, G. ;
Phys.Lett.B 132 (1983) 209-213, 1983.
Inspire Record 200209 DOI 10.17182/hepdata.30632

We have measured the p p differential elastic cross section at 8 momenta from 353 to 578 MeV/ c , determining, for each momentum, the ratio ρ of the real to imaginary parts of the elastic forward amplitude, the slope b of the elastic cross section and the total p p cross section σ. Our results are compared with previous experimental results and with theoretical predictions.

3 data tables

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Numerical values supplied by M. Cresti.


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

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TOPOLOGICAL CROSS-SECTIONS OF HE-3 P INTERACTION AND THE ELASTIC HE-3 P SCATTERING AT THE MOMENTUM OF 5-GEV/C. (IN RUSSIAN)

Blinov, A.V. ; Vanyushin, I.A. ; Grechko, V.E. ; et al.
Yad.Fiz. 39 (1984) 260-263, 1984.
Inspire Record 206497 DOI 10.17182/hepdata.17669

None

3 data tables

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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

MEAN BEAM ENERGY IS 39 GEV.

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.