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Charged Particle Multiplicity and Angular Distributions in Proton Emulsion Interactions at 800-{GeV}

The BATON ROUGE-CRACOW-MOSCOW-TASHKENT collaboration Abduzhamilov, A. ; Barbier, L. ; Chernova, L.P. ; et al.

Phys.Rev.D 35 (1987) 3537-3540, 1987.

Inspire Record 254225 DOI 10.17182/hepdata.3930

The interaction of 800-GeV protons in nuclear emulsion has been investigated. The multiplicities and angular distributions of charged particles emitted by both the projectile and the target nucleus have been measured for 1718 inelastic events and are compared with the data obtained in proton-emulsion collisions at 67, 200, and 400 GeV. The target excitation is found to be independent of energy while the production of secondary particles continues to increase with incident proton energy.

3 data tables

Table 1

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Measurement of Anti-neutron Proton Total and Annihilation Cross-sections From 100-{MeV}/c to 500-{MeV}/c

The BROOKHAVEN-HOUSTON-PENNSYLVANIA STATE-RICE collaboration Armstrong, T. ; Chu, C. ; Clement, J. ; et al.

Phys.Rev.D 36 (1987) 659-673, 1987.

Inspire Record 253128 DOI 10.17182/hepdata.26943

Total and annihilation n¯p cross sections from 100 to 500 MeV/c are reported, the first such measurements with good statistics in this momentum range. These cross sections are well represented by A+B/p, where p is the incident antineutron momentum, and are in agreement with previous n¯p and p¯n measurements. A comparison of these cross sections with phenomenological potential model calculations is good overall. However, the microscopic quark model gives unsatisfactory predictions. The agreement between previous p¯p annihilation cross sections and n¯p cross sections above 300 MeV/c is excellent. The total n¯p cross section is lower than the total p¯p cross section in this momentum range. Both of these types of behavior are predicted by potential models. The anticipated availability of future p¯p data below 300 MeV/c should indicate whether these trends continue at lower momenta.

1 data table

Table 1

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CROSS-SECTIONS OF STRANGE PARTICLE PRODUCTION CHANNELS IN PI+ P INTERACTIONS AT P = 4.23-GEV/C. (IN RUSSIAN)

Drutskoi, A.G. ; Mikhailichenko, V.I. ; Nikitin, S.Ya. ; et al.

Moscow Inst. Theor. Exp. Phys. GKAE - ITEF-87-112 (87,rec.Oct.) 10 p, 1987.

Inspire Record 254116 DOI 10.17182/hepdata.40093

None

2 data tables

Table 1

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PRODUCTION OF HEAVY ISOBARS IN REACTION pi- p ---> pi0 pi+ pi- pi- p AT 4.5-GeV/c MOMENTA

Aleshin, Yu.D. ; Prostova, L.A. ;

ITEP-40-1987, 1987.

Inspire Record 245880 DOI 10.17182/hepdata.40095

None

2 data tables

Table 1

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Experiment on Search for Tachyons Production in pi- p Interactions at 4.5 GeV/c

Perepelitsa, V.F. ;

ITEP-87-161, 1987.

Inspire Record 1394614 DOI 10.17182/hepdata.40098

The results of the experiment to search for charged tachyon production by Π- mesons with the 4.5 GeV/c momenta in a liquid-hydrogen bubble chamber are presented. Analysis of the events chosen is carried out by the method of missing masses. A definite excess of events-candidates, which is difficultly explained by all known backgrounds, is observed. Nevetherless, as interpretation of these events is indefinite, the results obtained are considered as establishment of the upper limits to charged tachyon production cross sections. These limits are on the ∼10-4 level from the total cross section of Π-p interactions, that is considerably lower than the upper limits established up to now to probabilities of tachyon production in hadron reactions

1 data table

Table 1

No description provided.