HEPData Search

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Anti-proton He-4 interactions at 200-MeV/c

Balestra, F. ; Batusov, Yu.A. ; Bendiscioli, G. ; et al.

Phys.Lett.B 305 (1993) 18-22, 1993.

Inspire Record 362745 DOI 10.17182/hepdata.28940

The differential cross sections for antiproton elastic scattering on 4 He at 192.8 MeV/ c are measured. The annihilation cross section σ a = (377.6 ± 8.0) mb, the elastic cross section σ el = (206.3 ± 6.6) mb and the total p 4 He interaction cross section σ tot = (583.9 ± 10.4) mb are determined. The ratio of the real to imaginary part of the forward p 4 He amplitude is found: π =−0.17± 0.33 0.24 . Partial wave analysis reveals that the S, P and D waves are essential in this energy region.

7 data tables

Table 1

Charged prong multiplicity distributions in pbar HE annihilation.

Table 2

Mean charged particle multiplicity in pbar HE4 annihilations.

Table 3

No description provided.

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Cross-sections of He-4 interaction with protons and He-4 p elastic scattering at 2.7-GeV/c

Abdullin, S.K. ; Blinov, A.V. ; Chadeeva, M.V. ; et al.

Phys.Atom.Nucl. 56 (1993) 536-539, 1993.

Inspire Record 344565 DOI 10.17182/hepdata.40023

The 2m hydrogen bubble chamber was exposed to a separated beam of α-particles from the ITEP synchrotron. The momentum of the 4 He-nuclei beam averaged over the bubble-chamber fiducial volume was equal to 2.7 GeV/ c (the kinetic energy of the initial protons in the nuclear rest frame was T p = 220 MeV). The total and topological cross sections were measured as well as the cross section of separate 4 He-p interaction channels and the differential cross sections d σ d t of the elastic 4 He-p scattering. The experimental results have been compared with the data of the previous experiments and with the theoretical predictions based on the Glauber-Sitenko multiple-scattering theory.

1 data table

Table 1

No description provided.

Cross sections for interaction of tritium nuclei with protons and elastic H-3 p scattering at momentum 5-GeV/c.

Abdullin, S.K. ; Blinov, A.V. ; Vanyushin, I.A. ; et al.

Sov.J.Nucl.Phys. 49 (1989) 106-107, 1989.

Inspire Record 287546 DOI 10.17182/hepdata.2229

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Study of Elastic $\pi^+ p$, $K^+ p$ and $p p$ Scattering at 250-{GeV}/$c$

The NA22 collaboration Adamus, M. ; Ajinenko, I.V. ; Agababyan, N.M. ; et al.

Phys.Lett.B 186 (1987) 223-226, 1987.

Inspire Record 246909 DOI 10.17182/hepdata.40833

Results are presented on π + p and K + p elastic scattering at 250 GeV/ c , the highest momentum so far reached for positive meson beams. The experiment (NA22) was performed with the european hybrid spectrometer. The π + p elastic cross section stays constant with energy while the K + p cross section increases.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

ERRORS IN ELASTIC CROSS SECTIONS INCLUDE SYSTEMATIC ERRORS.

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STUDY OF anti-p p ELASTIC SCATTERING AT 22.4-GeV/c

The Dubna-Alma Ata-Kosice-Moscow-Prague-Sofiya-Helsinki collaboration Batyunya, B.V. ; Boguslavsky, I.V. ; Bruncko, D. ; et al.

Sov.J.Nucl.Phys. 44 (1986) 969, 1986.

Inspire Record 222984 DOI 10.17182/hepdata.39005

None

3 data tables

Table 1

Table 2

INTEGRATED D(SIG)/D(T).

Table 3

OBTAINED FROM FIT D(SIG)/D(T)=A*EXP(B*T+C*T**2) IN 0.05 < -T < 0.3.

STUDY OF THE MECHANISM OF THE He-3 p ---> p p d REACTION AT He-3 MOMENTUM OF 5-GeV/c

Blinov, A.V. ; Chuvilo, I.V. ; Drobot, V.V. ; et al.

Nucl.Phys.A 451 (1986) 701-727, 1986.

Inspire Record 214108 DOI 10.17182/hepdata.17644

The mechanism of the reaction 3 He + p → p + p + d is studied by making use of the ITEP 80 cm liquid-hydrogen bubble chamber exposed to a beam of 5 GeV/ c 3 He nuclei. The reaction cross section is equal to 20.6 ± 0.3 mb. The phase-space regions associated with quasifree scattering (QFS) and final-state interactions (FSI) are selected. Angular, mass and momentum distributions of the reaction products are obtained in the entire kinematically allowed range. The experimental data in the QFS region are compared with theoretical calculations based on the simplest pole-diagram approximation. The 3 He and deuteron wave functions (WF) correspond to the realistic RSC potential. The D-wave components of these WF are taken into account. The absolute value of the cross section and shape of the distributions are described as a whole reasonably well within the frame of the model considered in the kinematical region where FSI may be neglected. But at large spectator momenta there is an essential disagreement. The possible reasons for this are discussed.

2 data tables

Table 1

No description provided.

Table 2

No description provided.