Resolving the plasma profile via differential single inclusive suppression

作     者：A. Majumder 

作者机构：Department of Physics Duke University Durham North Carolina 27708 USA 

出 版 物：《Physical Review C》 (物理学评论C辑：核物理学)

年 卷 期：2007年第75卷第2期

页      面：021901(R)-021901(R)页

核心收录：

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

主　　题：QUARK-GLUON PLASMA PARTON ENERGY-LOSS FRAGMENTATION FUNCTIONS SCATTERING COLLISIONS NUCLEI COLLABORATION PERSPECTIVE RADIATION OPACITY 

摘      要：The ability of experimental signatures to resolve the spatiotemporal profile of an expanding quark-gluon plasma is studied. In particular, the single inclusive suppression of high-momentum hadrons versus the centrality of a heavy-ion collision and with respect to the reaction plane in noncentral collisions is critically examined. Calculations are performed in the higher twist formalism for the modification of the fragmentation functions. Radically different nuclear geometries are used. The influence of different initial gluon distributions as well as different temporal evolution scenarios on the single inclusive suppression of high-momentum pions are outlined. It is demonstrated that the modification versus the reaction plane is quite sensitive to the initial spatial density. Such sensitivity remains even in the presence of a strong elliptic flow.