Investigating D0 meson production in p-Pb collisions at 5.02 TeV with a multi-phase transport model

被引：0
|
作者：
Zhang, Chao [1 ,2 ,4 ,5 ]
Zheng, Liang [3 ,4 ,5 ]
Shi, Shusu [6 ,7 ]
Lin, Zi-Wei [8 ]
机构：
[1] Wuhan Univ Technol, Sch Sci, Dept Phys Sci & Technol, Wuhan 430070, Peoples R China
[2] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China
[3] China Univ Geosci Wuhan, Sch Math & Phys, Wuhan 430074, Peoples R China
[4] Shanghai Res Ctr Theoret Nucl Phys, NSFC, Shanghai 200438, Peoples R China
[5] Fudan Univ, Shanghai 200438, Peoples R China
[6] Cent China Normal Univ, Inst Particle Phys, Wuhan 430079, Peoples R China
[7] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China
[8] East Carolina Univ, Dept Phys, Greenville, NC 27858 USA
来源：
EUROPEAN PHYSICAL JOURNAL C | 2024年 / 84卷 / 09期
基金：
中国国家自然科学基金; 美国国家科学基金会;
关键词：
HEAVY-FLAVOR; PHYSICS; MATTER;
D O I：
10.1140/epjc/s10052-024-13265-9
中图分类号：
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号：
摘要：
We study the production of D-0 meson in p+p and p-Pb collisions using the improved AMPT model considering both coalescence and independent fragmentation of charm quarks after the Cronin broadening is included. After a detailed discussion of the improvements implemented in the AMPT model for heavy quark production, we show that the modified AMPT model can provide a good description of D-0 meson spectra in p-Pb collisions, the Q(pPb) data at different centralities and R-pPb data in both mid- and forward (backward) rapidities. We also studied the effects of nuclear shadowing and parton cascade on the rapidity dependence of D-0 meson production and R-pPb. Our results indicate that using the same strength of the Cronin effect (i.e delta value) as that obtained from the mid-rapidity data leads to a considerable overestimation of the D-0 meson spectra and R-pPb data at high p(T) in the backward rapidity. As a result, the delta is determined via a chi(2 )fitting of the R-pPb data across various rapidities. This work lays the foundation for a better understanding of cold-nuclear-matter (CNM) effects in relativistic heavy-ion collisions.
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页数：12
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