Measurement of the Bottom Quark Contribution to Nonphotonic Electron Production in p+p Collisions at √s=200  GeV

Aggarwal, M. M. and Planinić, Mirko and Poljak, Nikola and Zoulkarneeva, Y. (STAR Collaboration) (2010) Measurement of the Bottom Quark Contribution to Nonphotonic Electron Production in p+p Collisions at √s=200  GeV. Physical Review Letters, 105 (20). pp. 202301-6. ISSN 0031-9007

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Abstract

The contribution of B meson decays to nonphotonic electrons, which are mainly produced by the semileptonic decays of heavy-flavor mesons, in p+p collisions at √s=200  GeV has been measured using azimuthal correlations between nonphotonic electrons and hadrons. The extracted B decay contribution is approximately 50% at a transverse momentum of pT≥5  GeV/c. These measurements constrain the nuclear modification factor for electrons from B and D meson decays. The result indicates that B meson production in heavy ion collisions is also suppressed at high pT.

Item Type: Article
Keywords: B, semileptonic decay p p, interaction D, semileptonic decay heavy ion, scattering electron, production electron, yield electron hadron, angular correlation transverse momentum, dependence nuclear matter, effect STAR experimental results Brookhaven RHIC Coll 200 GeV-cms/nucleon
Date: November 2010
Subjects: NATURAL SCIENCES > Physics
Additional Information: Copyright (2010) by the American Physical Society.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006
Publisher: American Physical Society
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 05 Jun 2014 12:45
Last Modified: 27 Feb 2016 07:32
URI: http://digre.pmf.unizg.hr/id/eprint/2269

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