New results on fully corrected dijet asymmetry in Pb + Pb collisions with ATLAS

详细信息    查看全文

• 作者：Dennis V. Perepelitsa ; on behalf of the ATLAS Collaboration¹
• 关键词：heavy ion physics ; jet quenching ; dijet asymmetry ; energy loss
• 刊名：Nuclear Physics A
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：956
• 期：Complete
• 页码：653-656
• 全文大小：245 K

文摘

The phenomenon of events containing highly asymmetric dijet pairs is one of the most striking results in heavy ion physics, providing the first direct observation of in-medium jet energy loss at the Large Hadron Collider. Detailed measurements of a centrality-dependent dijet imbalance in 2.76 TeV Pb + Pb collisions using data collected by the ATLAS detector in the 2011 LHC heavy ion run are presented. The new analysis provides a measurement, fully corrected for detector effects to the particle level, of the centrality- and leading jet transverse momentum-(p_T-) dependence of the dijet p_T balance distribution, compared to an analogous measurement in pp collisions at the same center-of-mass energy.