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1-18 Daniel:Energy dependence of jet quenching signatures in heavy-ion collisions
2019-01-16 10:31:16 作者: 来源: 浏览次数:

报告题目:Energy dependence of jet quenching signatures in heavy-ion collisions

  告  人:James Daniel Brandenburg(Brookhaven National Laboratory)

邀  :许长补

报告时间2019118(周五) 10:00

报告地点:青岛校区N7 122报告厅


报告摘要

High-pT partons traveling through the quark-gluon plasma (QGP) lose energy due to strong interactions. This effect, called jet-quenching, is attributed to collisional and radiative energy losses as high-pT partons travel through and interact with the dense medium. Over the years jet-quenching has become well established in high-energy heavy-ion collisions. In high-energy A+A collisions, the observation of jet-quenching is considered to be clear evidence of QGP formation. The Beam Energy Scan program at RHIC provided a unique opportunity to study the QCD phase diagram and to search for the turn off of key QGP signatures, such as jet-quenching, at sufficiently low collision energies. The collision energy dependence of jet-quenching effects, quantified through the nuclear modification factor (Rcp) of charged and identified hadrons will be discussed. The limitations of Rcp as an observable will be discussed and compared with a more differential technique for quantifying jet-quenching. Finally, the outlook for improved jet-quenching measurements in the second phase of the RHIC Beam Energy Scan will be presented.


报告人简介:

Daniel Brandenburg conducted his graduate studies at Rice University in Houston, Texas, USA. During his PhD he worked as part of the STAR collaboration studying high-energy nucleus-nucleus collisions. His main research topics have included exploration of the QCD phase diagram in Beam Energy Scan Phase I, dilepton production in the QGP medium, and recently, the study of extreme QED fields in ultra-peripheral nucleus-nucleus collisions.


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