Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV

Details Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV

2002-04-17

arxiv.org/abs/nucl-ex/0204007v1

Phys.Rev.Lett.89:092302,2002

Physics

Nuclear Physics

Nuclear Experiment

6 pages, RevTeX 3, 4 figures, 2 tables, 310 authors, submitted to Phys. Rev. Lett. on 17 April 2002. Plain text data tables fo

Scientific paper

10.1103/PhysRevLett.89.092302

We present results on the measurement of lambda and lambda^bar production in Au+Au collisions at sqrt(s_NN)=130 GeV with the PHENIX detector at RHIC. The transverse momentum spectra were measured for minimum bias and for the 5% most central events. The lambda^bar/lambda ratios are constant as a function of p_T and the number of participants. The measured net lambda density is significantly larger than predicted by models based on hadronic strings (e.g. HIJING) but in approximate agreement with models which include the gluon junction mechanism.

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