Detailed study of parton energy loss via measurement of fractional momentum loss of high pT hadrons in heavy ion collisions

10th International Workshop on High-pT Physics in the RHIC/LHC Era

Sakaguchi, Takao^1

Brookhaven National Laboratory, Physics Department, Upton

NY

11973-5000, United States^1

关键词: Global feature;    Global variables;    Heavy ion collision;    Momentum loss;    Parton energy loss;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/805/1/012012/pdf
DOI  :  10.1088/1742-6596/805/1/012012

来源: IOP

【 摘 要 】

PHENIX measurement of the fractional momentum loss (δpT/pT) of high pTidentified hadrons are presented. The δpT/pTof high pTπ0which are computed from 39 GeV Au+Au up to 2.76 TeV Pb+Pb are found to vary by a factor of six. We plotted the δpT/pTagainst several global variables, Npart, Nqpand dNch/dη, and found global features. It was found that 200 GeV Au+Au points are merging into the central 2.76 TeV Pb+Pb points when plotting δpT/pTagainst dNch/dη.