Probing medium-induced jet splitting and energy loss in heavy-ion collisions
Probing medium-induced jet splitting and energy loss in heavy-ion collisions
复制标题
探测重离子碰撞中介质引起的射流分裂和能量损失
DOI：
10.1016/j.physletb.2018.04.019
复制
发表时间：
2017-07
影响因子：
4.4
通讯作者：
Qin Guang You
中科院分区：
文献类型：
--
作者：
Chang Ning Bo;Cao Shanshan;Qin Guang You
基于高扭度理论，研究了相对论重离子碰撞中RHIC和LHC能量下喷注分裂的核修正。假设两个分裂的亚喷流有相干能量损失，则喷流分裂函数的核修正具有非单调的喷流能量依赖关系：在中等喷流能量下的修正最强，而在较大或较小的喷流能量下的修正较弱。考虑到RHIC上QGP介质的尺寸和密度都比LHC小，这有助于理解CMS和STAR合作所测得的疏导喷流：LHC的动量共享zg分布被强烈修正，而RHIC上的zg分布没有明显的修正。此外，观测到的疏导喷流z-g分布的核修正模式不能仅用两个亚喷流的独立能量损失来解释。我们的结果可能会在未来对在LHC具有较低喷注能量而在RHIC具有较大喷注能量的修整喷流的测量中得到验证，对于两个亚喷流之间不同的角间隔。
The nuclear modification of jet splitting in relativistic heavy-ion collisions at RHIC and the LHC energies is studied based on the higher twist formalism. Assuming coherent energy loss for the two splitted subjets, a non-monotonic jet energy dependence is found for the nuclear modification of jet splitting function: strongest modification at intermediate jet energies whereas weaker modification for larger or smaller jet energies. Combined with the smaller size and lower density of the QGP medium at RHIC than at the LHC, this helps to understand the groomed jet measurements from CMS and STAR Collaborations: strong modification of the momentum sharing z g distribution at the LHC and no obvious modification of z g distribution at RHIC. In addition, the observed nuclear modification pattern of the groomed jet z g distribution cannot be explained solely by independent energy loss of the two subjets. Our result may be tested in future measurements of groomed jets with lower jet energies at the LHC and larger jet energies at RHIC, for different angular separations between the two subjets.
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通过相对论重离子碰撞中双强子和强子-射流角相关性探测横向动量展宽
影响因子：
4.4
作者：
Chen Lin;Qin Guang-You;Wei Shu-Yi;Xiao Bo-Wen;Zhang Han-Zhong
通讯作者：
Zhang Han-Zhong
影响因子：
8.6
作者：
Xin-Nian Wang;M. Gyulassy
通讯作者：
Xin-Nian Wang;M. Gyulassy
影响因子：
3.1
作者：
C. Young;B. Schenke;S. Jeon;C. Gale
通讯作者：
C. Young;B. Schenke;S. Jeon;C. Gale
探测重离子碰撞中的横向动量展宽
影响因子：
4.4
作者：
Mueller A. H.;Wu Bin;Xiao Bo-Wen;Yuan Feng
通讯作者：
Yuan Feng
影响因子：
5
作者：
A. Majumder
通讯作者：
A. Majumder