Rapidity correlations in the RHIC Beam Energy Scan Data

0481339 - ÚJF 2018 RIV NL eng J - Článek v odborném periodiku
Jowzaee, S. - Adamczyk, L. - Adkins, J. K. - Agakishiev, G. - Bielčík, J. - Bielčíková, Jana - Chaloupka, P. - Federič, Pavol - Rusňák, Jan - Rusňáková, O. - Šimko, Miroslav - Šumbera, Michal - Vértési, Robert … celkem 341 autorů
Rapidity correlations in the RHIC Beam Energy Scan Data.
Nuclear Physics. A. Roč. 967, č. 11 (2017), s. 792-795. ISSN 0375-9474. E-ISSN 1873-1554
Grant CEP: GA MŠMT LG15001; GA MŠMT LM2015054
Institucionální podpora: RVO:61389005
Klíčová slova: STAR collaboration * rapidity correlations * forward-backward asymmetry
Obor OECD: Nuclear physics
Impakt faktor: 1.992, rok: 2017

A pair-normalized two-particle covariance versus the rapidity of the two particles, called R-2, was originally studied in ISR and FNAL data in the 1970's. This variable has recently seen renewed interest for the study of the dynamics of heavy-ion collisions in the longitudinal direction. These rapidity correlations can be decomposed into a basis set of Legendre polynomials with prefactors a(mn ) which can be considered the rapidity analog of the decomposition of azimuthal anisotropies into a set of cosine functions with prefactors vn. The a(mn) values have been suggested to be sensitive to the number of particle emitting sources, baryon stopping, viscosities, and critical behavior. The rapidity correlations have been measured by the STAR collaboration as a function of the beam energy for 0-5% central Au+Au collisions with beam energies ranging from 7.7 to 200 GeV. The experimental results and comparisons to the UrQMD model are presented.
Trvalý link: http://hdl.handle.net/11104/0276915