Overall momentum balance and redistribution of the lost energy in asymmetric dijet events in 2.76A TeV Pb-Pb collisions with a multiphase transport model
Gao, Z; Luo, A; Ma, GL; Qin, GY; Zhang, HZ
2018
发表期刊PHYSICAL REVIEW C
ISSN2469-9985
卷号97期号:4页码:-
文章类型期刊论文
摘要The overall transverse momentum balance and the redistribution of the lost energy from hard jets for asymmetric dijet events in PbPb collisions at 2.76A TeV at the LHC is studied within a multiphase transport (AMPT) model. A detailed analysis is performed for the projected transverse momentum < p(T)(parallel to)> contributed from the final charged hadrons carrying different transverse momenta and emitted from different angular directions. We find that the transverse momentum projection < p(T)(parallel to)> in the leading jet direction is mainly contributed by hard hadrons (p(T) > 8.0 GeV/c) in both peripheral and central PbPb collisions, while the opposite direction in central collisions is dominated by soft hadrons (p(T) = 0.5-2.0 GeV/c). The study of in-cone and out-of-cone contributions to < p(T)(parallel to)> shows that these soft hadrons are mostly emitted at large angles away from the dijet axis. Our AMPT calculation is in qualitative agreement with the CMS measurements and the primary mechanism for the energy transported to large angles in theAMPTmodel is the elastic scattering at the partonic stage. Future studies including also inelastic processes should be helpful in understanding the overestimation of the magnitudes of in-cone and out-of-cone imbalances from our AMPT calculations, and shed light on different roles played by radiative and collisional processes in the redistribution of the lost energy from hard jets.
关键词Heavy-ion Collisions Transverse-momentum Root-s(Nn)=2.76 Tev Centrality Dependence Azimuthal Anisotropy Particle-production Hadron Spectra Jet Production Inclusive Jet Dihadron
DOI10.1103/PhysRevC.97.044903
收录类别SCI
语种英语
WOS记录号WOS:000429456600004
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29098
专题中科院上海应用物理研究所2011-2018年
作者单位1.Gao, Z
2.Luo, A
3.Ma, GL
4.Qin, GY
5.Zhang, HZ
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Gao, Z,Luo, A,Ma, GL,et al. Overall momentum balance and redistribution of the lost energy in asymmetric dijet events in 2.76A TeV Pb-Pb collisions with a multiphase transport model[J]. PHYSICAL REVIEW C,2018,97(4):-.
APA Gao, Z,Luo, A,Ma, GL,Qin, GY,&Zhang, HZ.(2018).Overall momentum balance and redistribution of the lost energy in asymmetric dijet events in 2.76A TeV Pb-Pb collisions with a multiphase transport model.PHYSICAL REVIEW C,97(4),-.
MLA Gao, Z,et al."Overall momentum balance and redistribution of the lost energy in asymmetric dijet events in 2.76A TeV Pb-Pb collisions with a multiphase transport model".PHYSICAL REVIEW C 97.4(2018):-.
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