Bose-Einstein Correlations of Charged Kaons in Central Pb+Pb Collisions at E-Beam=158 Gev Per Nucleon

SV Afanasiev,T Anticic,B Baatar,D Barna,J Bartke,RA Barton,M Behler,L Betev,H Bialkowska, A Billmeier,C Blume,CO Blyth,B Boimska,M Botje,J Bracinik,R Bramm,R Brun,P Buncic,V Cerny,O Chvala,JG Cramer,P Csato,P Dinkelaker,V Eckardt,P Filip,Z Fodor,P Foka,P Freund,V Friese,J Gal,M Gazdzicki,G Georgopoulos,E Gladysz,S Hegyi, C Hohne, G Igo,PG Jones,K Kadija,A Karev,VI Kolesnikov,T Kollegger,M Kowalski,I Kraus,M Kreps, M van Leeuwen,R Lednicky,P Levai,AI Malakhov,S Margetis,C Markert,BW Mayes,GL Melkumov,C Meurer,A Mischke,M Mitrovski,J Molnar,JM Nelson, G Padlla, AD Panagiotou,K Perl,A Petridis,M Pikna,L Pinsky,F Puhlhofer,JG Reid,R Renfordt,W Retyk,C Roland,G Roland,A Rybicki,T Sammer,A Sandoval,H Sann,N Schmitz,P Seyboth,F Sikler,B Sitar,E Skrzypczak,GTA Squier,R Stock,H Strobele,T Susa,I Szentpetery,J Sziklai,TA Trainor,D Varga,M Vassiliou,GI Veres,G Vesztergombi,D Vranic,A Wetzler,C Whitten,IK Yoo,J Zaranek,J Zimanyi

Physics Letters B（2003）

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摘要

Bose-Einstein correlations of charged kaons were measured near mid-rapidityin central Pb+Pb collisions at 158 A·GeV by the NA49 experiment at theCERN SPS. Source radii were extracted using the Yano-Koonin-Podgoretsky andBertsch-Pratt parameterizations. The results are compared to published piondata. The measured m_⊥ dependence for kaons and pions is consistent withcollective transverse expansion of the source and a freeze-out time of about9.5 fm.

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关键词

Heavy-Ion Collisions,Positron-Molecule Interactions,Electron Attachment

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