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Open charm yields in d+Au collisions at root s(NN)=200 GeV

Adams, J; Aggarwal, MM; Ahammed, Z; Amonett, J; Anderson, BD; Arkhipkin, D; Averichev, GS; ... Zubarev, AN; + view all (2005) Open charm yields in d+Au collisions at root s(NN)=200 GeV. PHYS REV LETT , 94 (6) , Article 062301. 10.1103/PhysRevLett.94.062301. Green open access

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Abstract

Midrapidity open charm spectra from direct reconstruction of D-0((D) over bar (0))-->K(-/+)pi(+/-) in d(+)Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at roots(NN)=200 GeV are reported. The D-0((D) over bar (0)) spectrum covers a transverse momentum (p(T)) range of 0.1< p(T) < 3 GeV/c, whereas the electron spectra cover a range of 1< p(T) < 4 GeV/c. The electron spectra show approximate binary collision scaling between p+p and d+Au collisions. From these two independent analyses, the differential cross section per nucleon-nucleon binary interaction at midrapidity for open charm production from d+Au collisions at BNL RHIC is dsigma(c)((c)) over bar (NN)/dy=0.30+/-0.04(stat)+/-0.09(syst) mb. The results are compared to theoretical calculations. Implications for charmonium results in A+A collisions are discussed.

Type: Article
Title: Open charm yields in d+Au collisions at root s(NN)=200 GeV
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.94.062301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.94.062301
Language: English
Additional information: © 2005 The American Physical Society
Keywords: HEAVY-ION COLLISIONS, RESISTIVE PLATE CHAMBERS, DEPENDENCE, ELECTRONS, ENERGIES, PAIRS, PP
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery-pp.ucl.ac.uk/id/eprint/1324860
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