Open charm yields in d+Au collisions at sqrt[sNN]=200 GeV

Midrapidity open charm spectra from direct reconstruction of D0(D0-bar)-->K± pi ± in d+Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at sqrt[sNN]=200 G
Midrapidity open charm spectra from direct reconstruction of D0(D0-bar)-->K± pi ± in d+Au collisions and indirect electron-positron measurements via charm semileptonic decays in p+p and d+Au collisions at sqrt[sNN]=200 GeV are reported. The D0(D0-bar) spectrum covers a transverse momentum (pT) range of 0.1<pT<3 GeV/c, whereas the electron spectra cover a range of 1<pT<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 d sigma NNcc-bar/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.
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Metadaten
Author:J. Adams, Jens Berger, Thomas Dietel, Thorsten Kollegger, Jens Sören Lange, Reinhard Stock, et al., STAR Collaboration
URN:urn:nbn:de:hebis:30-19155
Document Type:Article
Language:English
Date of Publication (online):2005/10/14
Year of first Publication:2005
Publishing Institution:Univ.-Bibliothek Frankfurt am Main
Release Date:2005/10/14
Source:Phys. Rev. Lett. 94, 062301 (2005), ©2005 The American Physical Society, http://link.aps.org/abstract/PRL/v94/e062301
HeBIS PPN:188847006
Institutes:Physik
Dewey Decimal Classification:530 Physik
PACS-Classification:13.20.Fc Decays of charmed mesons
13.25.Ft Decays of charmed mesons
24.85.+p Quarks, gluons, and QCD in nuclear reactions
25.75.Dw Particle and resonance production
Sammlungen:Universitätspublikationen
Licence (German):License Logo Veröffentlichungsvertrag für Publikationen

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