Multistrange baryon elliptic flow in Au plus Au collisions at root(NN)=200 GeV

0308756 - ÚJF 2008 RIV US eng J - Článek v odborném periodiku
Adams, J. - Aggarwall, M. M. - Šumbera, Michal - Bysterský, Michal - Chaloupka, Petr - Zborovský, Imrich
Multistrange baryon elliptic flow in Au plus Au collisions at root(NN)=200 GeV.
[Eliptický tok baryonů s vícenásobnou podivností ve srážkách Au+Au při oot(NN)=200 GeV.]
Physical Review Letters. Roč. 95, č. 12 (2005), 122301-1-122301-6. ISSN 0031-9007. E-ISSN 1079-7114
Grant CEP: GA ČR GA202/04/0793
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: FINITE-TEMPERATURE
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 7.489, rok: 2005

We report on the first measurement of elliptic flow nu(2)(p(T)) of multistrange baryons Xi(-)+Xi(+) and Omega(-)+Omega(+) in heavy-ion collisions. In minimum-bias Au+Au collisions at root s(NN)=200 GeV, a significant amount of elliptic flow, comparable to other nonstrange baryons, is observed for multistrange baryons which are expected to be particularly sensitive to the dynamics of the partonic stage of heavy-ion collisions. The p(T) dependence of nu(2) of the multistrange baryons confirms the number of constituent quark scaling previously observed for lighter hadrons. These results support the idea that a substantial fraction of the observed collective motion is developed at the early partonic stage in ultrarelativistic nuclear collisions at the Relativistic Heavy Ion Collider.

Eliptický tok baryonů s vícenásobnou podivností ve srážkách Au+Au při oot(NN)=200 GeV.
Trvalý link: http://hdl.handle.net/11104/0161131