PROTON CHARACTERISTICS AS A FUNCTION OF CUMULATIVE VARIABLE IN C Ta: COLLISIONS AT 4.2-GeV/c PER NUCLEON

Gasparian, A.P. ; Ivanovskaya, I.A. ; Mehdiyev, Rashid R. ;
Yad.Fiz. 41 (1985) 1229-1234, 1985.
Inspire Record 203307 DOI 10.17182/hepdata.39061

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Version 2
Global polarization measurement in Au+Au collisions

The STAR collaboration Abelev, B.I. ; Aggarwal, M.M. ; Ahammed, Z. ; et al.
Phys.Rev.C 76 (2007) 024915, 2007.
Inspire Record 750410 DOI 10.17182/hepdata.98581

The system created in non-central relativistic nucleus-nucleus collisions possesses large orbital angular momentum. Due to spin-orbit coupling, particles produced in such a system could become globally polarized along the direction of the system angular momentum. We present the results of Lambda and anti-Lambda hyperon global polarization measurements in Au+Au collisions at sqrt{s_NN}=62.4 GeV and 200 GeV performed with the STAR detector at RHIC. The observed global polarization of Lambda and anti-Lambda hyperons in the STAR acceptance is consistent with zero within the precision of the measurements. The obtained upper limit, |P_{Lambda,anti-Lambda}| <= 0.02, is compared to the theoretical values discussed recently in the literature.

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