Lambda and lambda production in central Pb-Pb collisions at 40, 80, and 158A GeV.

T Antičić ,R Bramm,G Pálla,H Ströbele,J Sziklai,A Karev,P Filip,V Eckardt,J G Cramer,A Wetzler,D Flierl,C Höhne,G Stefanek,I Kraus,K Perl,F Pühlhofer,W Retyk,R Stock,M Vassiliou,P Dinkelaker,C Meurer,P Freund,S Hegyi,E Skrzypczak,G L Melkumov,P Seyboth,R Korus,M Mateev,A Billmeier,V Friese,G Georgopoulos,N Darmenov,N Schmitz,I K Yoo,M Botje,M Behler,H Sann,J Zaranek,D Panayotov,M Van Leeuwen,D Barna,B Baatar,Z Fodor,J Zimányi,S Mrówczyński ,A Dimitrov,T A Trainer ,G I Veres,L Betev,E Kornaś ,P Foka,M Mitrovski,P Bunčić,L Litov,O Chvála ,B Sitár ,M Gaździcki,H Białkowska,J Braciník ,J Molnár,C Roland,P Csató,G Vesztergombi,M Kowalski,A Sandoval,A Rybicki,F Siklér,A Petridis,M Rybczyński,K Kadija,V Černý ,L Pinsky,B Boimska,B Mayes ,I Bartke ,Z Włodarczyk,D Vranić,M Kreps,P Christakoglou,R Brun,János Gál ,V Kolesnikov ,A Mischke,P Lévai,C Blume,M Makariev,G Roland,T Šuša ,J G Reid,D Varga,R Renfordt,T Kollegger,A Panagiotou ,M Pikna,A Malakhov ,C Markert,I Szentpétery,E Gładysz

doi:10.1103/physrevlett.93.022302

Lambda and lambda production in central Pb-Pb collisions at 40, 80, and 158A GeV.

T Antičić , R Bramm + Show 96 more

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https://doi.org/10.1103/physrevlett.93.022302

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#CERN Super Proton Synchrotron Energies #158A GeV Beam Energy + Show 8 more

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Abstract

Production of Lambda and Antilambda hyperons was measured in central Pb-Pb collisions at 40, 80, and 158A GeV beam energy on a fixed target. Transverse mass spectra and rapidity distributions are given for all three energies. The Lambda/pi ratio at midrapidity and in full phase space shows a pronounced maximum between the highest BNL Alternating Gradient Synchrotron and 40A GeV CERN Super Proton Synchrotron energies, whereas the Lambda/pi ratio exhibits a monotonic increase.

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