Propagation of heavy baryons in heavy-ion collisions

被引：40

作者：

Das, Santosh K. ^{[1
,2
]}

Torres-Rincon, Juan M. ^{[3
,4
]}

Tolos, Laura ^{[4
,5
]}

Minissale, Vincenzo ^{[1
,2
]}

Scardina, Francesco ^{[1
,2
]}

Greco, Vincenzo ^{[1
,2
]}

机构：

[1] Univ Catania, Dept Phys & Astron, Via S Sofia 64, I-95125 Catania, Italy

[2] INFN LNS, Lab Nazl Sud, Via S Sofia 62, I-95123 Catania, Italy

[3] Univ Nantes, Ecole Mines Nantes, UMR 6457, Subatech,CNRS IN2P3, 4 Rue Alfred Kastler, F-44307 Nantes, France

[4] Goethe Univ Frankfurt, Frankfurt Inst Adv Studies, Ruth Moufang Str 1, D-60438 Frankfurt, Germany

[5] Campus Univ Autonoma Barcelona, IEEC CSIC, Inst Ciencies Espai, Carrer Can Magrans S-N, Cerdanvola Del Valles 08193, Spain

来源：

PHYSICAL REVIEW D | 2016年 / 94卷 / 11期

关键词：

FINITE SHEAR VISCOSITY; QUARK-GLUON PLASMA; ELLIPTIC FLOW; FLAVOR; COALESCENCE; SPECTRA; NUCLEUS; PROTON; CHARM;

D O I：

10.1103/PhysRevD.94.114039

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The drag and diffusion coefficients of heavy baryons (Lambda(c) and Lambda(b)) in the hadronic phase created in the latter stage of the heavy-ion collisions at RHIC and LHC energies have been evaluated recently. In this work we compute some experimental observables, such as the nuclear suppression factor R-AA and the elliptic flow v(2) of heavy baryons at RHIC and LHC energies, highlighting the role of the hadronic phase contribution to these observables, which are going to be measured at Run 3 of LHC. For the time evolution of the heavy quarks in the quark and gluon plasma (QGP) and heavy baryons in the hadronic phase, we use the Langevin dynamics. For the hadronization of the heavy quarks to heavy baryons we employ Peterson fragmentation functions. We observe a strong suppression of both the Lambda(c) and Lambda(b). We find that the hadronic medium has a sizable impact on the heavy-baryon elliptic flow whereas the impact of hadronic medium rescattering is almost unnoticeable on the nuclear suppression factor. We evaluate the Lambda(c)/D ratio at RHIC and LHC. We find that the Lambda(c)/D ratio remains unaffected due to the hadronic phase rescattering which enables it as a nobel probe of QGP phase dynamics along with its hadronization.

引用

页数：11

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