Comparison of p + A and Si+Au collisions at 14. 6 GeV/ c

Journal Article · Mon Mar 25 04:00:00 EST 1991 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.66.1567· OSTI ID:5697197

Abbott, T; Akiba, Y; Beavis, D; Bloomer, M A; Bond, P D; Chasman, C; Chen, Z; Chu, Y Y; Cole, B A; Costales, J B; Crawford, H J; Cumming, J B; Debbe, R; Engelage, J; Fung, S Y; Grodzins, L; Gushue, S; Hamagaki, H; Hansen, O; Hayano, R S ; Hayashi, S; Homma, S; Huang, H Z; Ikeda, Y; Juricic, I; Kang, J; Katcoff, S; Kaufman, S; Kimura, K; Kitamura, K; Kurita, K; Ledoux, R J; Levine, M J; Miake, Y; Morse, R J; Moskowitz, B; Nagamiya, S; Olness, J; Parsons, C G; Remsberg, L P; Sakurai, H; Sarabura, M; Shor, A; Stankus, P; Steadman, S G; Stephans, G S.F.; Sugitate, T; Tanaka, M; Tannenbaum, M J; Torikoshi, M; van Dijk, J H; Videbaek, F; Vient, M; Vincent, P; Vutsadakis, V; Wegner, H E; Woodruff, D S; Wu, Y D; Zajc, W ^[1]

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1. Argonne National Laboratory, Argonne, Illinois 60439-4843 (US) Brookhaven National Laboratory, Upton, New York 11973 Space Sciences Laboratory, University of California, Berkeley, California 94720 University of Californ

The production of {pi}{sup {plus minus}},{ital K}{sup {plus minus}},{ital p} has been measured in {ital p}+Be and {ital p}+Au collisions for comparison with central Si+Au collisions. The inverse slope parameters {ital T}{sub 0} obtained by an exponential fit to the invariant cross sections in transverse mass are found to be, {ital T}{sub 0}{sup {ital p},}{ital K+},{pi}{sup {pi}}{similar to}140--160 MeV in {ital p}+{ital A} collisions, whereas in central Si+Au collisions, {ital T}{sub 0}{sup {ital p},}{ital K+}{similar to}200--220 MeV {gt}{ital T}{sub 0}{sup {pi}{pi}}{similar to}140--160 MeV at midrapidity. The {pi}{sup {plus minus}} and {ital K}{sup +} distributions are shifted backwards in {ital p}+Au compared with {ital p}+Be. A gradual increase of ({ital dn}/{ital dy}){sub {ital K}}{sup +} per projectile nucleon is observed from {ital p}+Be to {ital p}+Au to central Si+Au collisions, while pions show no significant increase.

• DOE Contract Number: FG03-86ER40271
• OSTI ID: 5697197
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 66:12; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALKALINE EARTH ISOTOPES
BARYON REACTIONS
BERYLLIUM ISOTOPES
BOSONS
BROOKHAVEN AGS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
CYCLIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY RANGE
GEV RANGE
GEV RANGE 10-100
GOLD ISOTOPES
HADRON REACTIONS
HADRONS
HEAVY ION REACTIONS
IONS
ISOTOPES
KAONS
MEASURING METHODS
MESONS
NUCLEAR REACTIONS
NUCLEON REACTIONS
PARTICLE PRODUCTION
PARTICLE PROPERTIES
PARTICLE RAPIDITY
PIONS
PROTON REACTIONS
PSEUDOSCALAR MESONS
SILICON IONS
STRANGE MESONS
STRANGE PARTICLES
SYNCHROTRONS