Počet záznamů: 1

J/psi production at high transverse momenta in p plus p and Cu plus Cu collisions at root s(NN)=200 GeV

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    0332056 - UJF-V 2010 RIV US eng J - Článek v odborném periodiku
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    J/psi production at high transverse momenta in p plus p and Cu plus Cu collisions at root s(NN)=200 GeV.
    Physical Review. C. Roč. 80, č. 4 (2009), 041902/1-041902/6 ISSN 0556-2813
    Grant CEP: GA ČR GA202/07/0079; GA MŠk LC07048; GA MŠk LA09013
    Výzkumný záměr: CEZ:AV0Z10480505; CEZ:AV0Z10100502
    Klíčová slova: heavy-ion collisions * particle and resonance production * QUARK-GLUON PLASMA
    Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
    Impakt faktor: 3.477, rok: 2009

    The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of J/psi e(+) e(-) at midrapidity and high transverse momentum (pT > 5 GeV/c) in p + p and central Cu + Cu collisions at root s(NN) = 200 GeV. The inclusive J/psi production cross section for Cu + Cu collisions is found to be consistent at high p(T) with the binary collision-scaled cross section for p + p collisions. At a confidence level of 97%, this is in contrast to a suppression of J/psi production observed at lower p(T). Azimuthal correlations of J/psi with charged hadrons in p + p collisions provide an estimate of the contribution of B-hadron decays to J/psi production of 13% +/- 5%.
    Trvalý link: http://hdl.handle.net/11104/0177409