ANTIBARYON PRODUCTION IN SULFUR NUCLEUS COLLISIONS AT 200 GEV PER NUCLEON

Authors
ALBER T APPELSHAUSER H BACHLER J BARTKE J BIALKOWSKA H BLOOMER MA BOCK R BRAITHWAITE WJ BRINKMANN D BROCKMANN R BUNCIC P CHAN P CRAMER JG CRAMER PB DERADO I ECKARDT V ESCHKE J FAVUZZI C FERENC D FLEISCHMANN B FOKA P FREUND P FUCHS M GAZDZICKI M GLADYSZ E GREBIESZKOW J GUNTHER J HARRIS JW HOFFMANN M JACOBS P KABANA S KADIJA K KOWALSKI M KUHMICHEL A LEE JY LJUBICIC A MARGETIS S MITCHELL JT MORSE R NAPPI E ODYNIEC G PAIC G PANAGIOTOU AD PETRIDIS A PIPER A POSA F POSKANZER AM PUHLHOFER F RAUCH W RENFORDT R RETYK W ROHRICH D ROLAND G ROTHARD H RUNGE K SANDOVAL A SCHMITZ N SCHMOETTEN E SENDELBACH R SEYBOTH P SEYERLEIN J SKRZYPCZAK E SPINELLI P STOCK R STROBELE H TRAINOR TA VASILEIADIS G VASSILIOU M VRANIC D WENIG S WOSIEK B ZHU X
Citation
T. Alber et al., ANTIBARYON PRODUCTION IN SULFUR NUCLEUS COLLISIONS AT 200 GEV PER NUCLEON, Physics letters. Section B, 366(1-4), 1996, pp. 56-62
Citations number
44
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
366
Issue
1-4
Year of publication
1996
Pages
56 - 62
Database
ISI
SICI code
0370-2693(1996)366:1-4<56:APISNC>2.0.ZU;2-4
Abstract
Antiproton production near midrapidity has been studied in central col lisions of S-32 With sulphur, silver and gold nuclei at 200 GeV per nu cleon. The measured transverse mass distributions can be described by an exponential with inverse slope parameters of about 200 MeV, similar to those obtained from <(Lambda)over bar> spectra. The rapidity densi ty increases weakly with the target mass, ranging from 0.4 to 0.7. The ratio <(Lambda)/(p)over bar> near midrapidity is approximately 1.4 on average, significantly larger than the corresponding ratio observed i n proton-proton and proton-nucleus collisions.