Study of Isolated-photon and Jet Momentum Imbalance in $pp$ and $PbPb$ collisions
| Popis: | In this paper, we study the production of isolated-photon plus a jet in $pp$ and $PbPb$ collisions, which can be used as an important probe to the jet transport property in quark gluon plasma created in heavy ion collisions. Normally, there are two types of observables associated with the production of isolated-photon plus a jet, namely, the azimuthal angular correlation and the transverse momentum imbalance. To understand both observables in the full kinematical region, we need to employ the perturbative QCD calculation, which takes into account the hard splitting of partons, together with the Sudakov resummation formalism, which resums soft gluon splittings. Furthermore, by introducing energy-loss into the system, we calculate the enhancement of the momentum imbalance distribution for $AA$ as compared to $pp$ collisions and make predictions for future unfolded experimental data. In addition, in order to extract the jet transport coefficient more precisely in our numerical calculation, we also distinguish quark jets from gluon jets, since they interact with quark gluon plasma with different strengths. This work provides a reliable theoretical tool for the calculation of the gamma-jet correlation, which can lead us to a more precise extraction of the jet transport coefficient in relativistic heavy-ion collisions. 11 pages, 6 figures |
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| Jazyk: | English |
| DOI: | 10.1016/j.nuclphysb.2018.06.013⟩ |
| Přístupová URL adresa: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4c21a3dfdcb359d5bfb8102042e0969 https://hal.archives-ouvertes.fr/hal-01768130 |
| Rights: | OPEN |
| Přírůstkové číslo: | edsair.doi.dedup.....d4c21a3dfdcb359d5bfb8102042e0969 |
| Autor: | Lei Wang, Ya-Qi Zhang, Hanzhong Zhang, Lin Chen, Shu-Yi Wei, Guang-You Qin, Bo-Wen Xiao |
| Přispěvatelé: | Centre de Physique Théorique [Palaiseau] (CPHT), École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique Théorique [Palaiseau] ( CPHT ), École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Quark
Nuclear and High Energy Physics Particle physics p p: scattering resummation: Sudakov Photon heavy ion: scattering Nuclear Theory [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] Transport coefficient Astrophysics::High Energy Astrophysical Phenomena nucleus nucleus --> photon jet FOS: Physical sciences Parton [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex] 01 natural sciences Nuclear Theory (nucl-th) High Energy Physics - Phenomenology (hep-ph) 0103 physical sciences gluon: jet lcsh:Nuclear and particle physics. Atomic energy. Radioactivity Nuclear Experiment (nucl-ex) Resummation [ PHYS.NEXP ] Physics [physics]/Nuclear Experiment [nucl-ex] quark: jet quantum chromodynamics: perturbation theory 010306 general physics Nuclear Experiment [ PHYS.NUCL ] Physics [physics]/Nuclear Theory [nucl-th] quark gluon: plasma Physics 010308 nuclear & particles physics High Energy Physics::Phenomenology Perturbative QCD nucleus nucleus: scattering jet: single production 3. Good health Gluon photon: single production High Energy Physics - Phenomenology jet: momentum p p --> photon jet [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph] Quark–gluon plasma lcsh:QC770-798 [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph] High Energy Physics::Experiment |
| Zdroj: | Nucl.Phys.B Nucl.Phys.B, 2018, 933, pp.306-319. ⟨10.1016/j.nuclphysb.2018.06.013⟩ Nuclear Physics B, Vol 933, Iss, Pp 306-319 (2018) |
| DOI: | 10.1016/j.nuclphysb.2018.06.013⟩ |
| Popis: | In this paper, we study the production of isolated-photon plus a jet in $pp$ and $PbPb$ collisions, which can be used as an important probe to the jet transport property in quark gluon plasma created in heavy ion collisions. Normally, there are two types of observables associated with the production of isolated-photon plus a jet, namely, the azimuthal angular correlation and the transverse momentum imbalance. To understand both observables in the full kinematical region, we need to employ the perturbative QCD calculation, which takes into account the hard splitting of partons, together with the Sudakov resummation formalism, which resums soft gluon splittings. Furthermore, by introducing energy-loss into the system, we calculate the enhancement of the momentum imbalance distribution for $AA$ as compared to $pp$ collisions and make predictions for future unfolded experimental data. In addition, in order to extract the jet transport coefficient more precisely in our numerical calculation, we also distinguish quark jets from gluon jets, since they interact with quark gluon plasma with different strengths. This work provides a reliable theoretical tool for the calculation of the gamma-jet correlation, which can lead us to a more precise extraction of the jet transport coefficient in relativistic heavy-ion collisions. 11 pages, 6 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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