论文标题
在LHC测试中的Parton Energy损失是强耦合培养基的
Parton energy loss at LHC tests for a strongly coupled medium
论文作者
论文摘要
我们使用PBPB和PP碰撞中的JET横截面的测量值直接构建了LHC核冲突中横向动量损失的度量。该建议显示与R_AA相当，并且同样简单地构建。使用ATLAS协作的数据以两种不同的碰撞能量，我们表明拟议的度量具有较小的统计不确定性。我们认为，通过实验协作，可以轻松地改善系统错误，以至于它直接探测Jet-MeDium相互作用是由于强烈相互作用的介质还是弱相互作用的等离子体引起的。我们认为，当前数据可能会略微偏爱强烈的相互作用介质。另一方面，假设培养基相互作用薄弱，我们能够提供与先前报道的估计值吻合的喷射淬灭参数QHAT。
We construct a measure of transverse momentum loss of jets in nuclear collisions at LHC directly using measurements of jet cross sections in PbPb and pp collisions. The proposal is shown to be equivalent to R_AA and is equally straightforward to construct. Using data from the ATLAS collaboration at two different collision energies, we show that the proposed measure has small statistical uncertainties. We argue that systematic errors can be easily improved over our estimates by the experimental collaboration to such an extent that it directly probes whether the jet-medium interaction is due to a strongly interacting medium or a weakly interacting plasma. We argue that the current data may marginally favour a strongly interacting medium. On the other hand, assuming that the medium is weakly interacting, we are able to provide estimates of the jet quenching parameter qhat which are in rough agreement with previously reported estimates.
