Open-charm production as a function of charged particle multiplicity in pp collisions at √s=7 TeV with ALICE

被引：1

作者：

Bala, Renu ^{[1
]}

机构：

[1] Univ Jammu, Dept Phys, Jammu 180004, India

来源：

14TH INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER (SQM2013) | 2014年 / 509卷

关键词：

D O I：

10.1088/1742-6596/509/1/012081

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Heavy quarks (charm and beauty) are an effective tool to investigate the properties of the Quark-Gluon Plasma created in heavy-ion collisions as they are produced in initial hard scattering processes and as they experience all the stages of the medium evolution. The measurement of heavy-flavour production cross sections in pp collisions at the LHC, besides providing a reference for heavy-ion studies, allows one to test perturbative QCD calculations. A brief review of ALICE results on the production of heavy-flavoured hadrons measured from fully reconstructed hadronic decay topologies in pp collisions at root s = 7 TeV is presented. Furthermore, heavy-flavour production was also studied as a function of the particle multiplicity in pp collisions. This could provide insight into multi-parton scatterings. A measurement of the inclusive J/psi yield as a function of the charged-particle pseudorapidity density was performed by the ALICE Collaboration at the LHC in pp collisions at root s = 7 TeV. An increase of the J/ti, yield with increasing multiplicity was observed. In this context, the study of the yield of D mesons as a function of the charged-particle multiplicity could provide a deeper insight into charm-quark production in pp collisions. We will present the first results obtained for prompt D-0, D+, and D*+ mesons using hadronic decay channels at midrapidity in pp collisions at root s=7 TeV as a function of the charged-particle multiplicity. The prompt D-meson yields as a function of multiplicity are measured in different PT intervals. These yields will be compared to the results obtained for inclusive and non-prompt J/psi.

引用

页数：4

共 7 条

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