Open charm hadron production via hadronic decays at STAR

0396080 - ÚJF 2014 RIV NL eng J - Článek v odborném periodiku
Tlustý, David
Open charm hadron production via hadronic decays at STAR.
Nuclear Physics. A. Roč. 910, AUG (2013), s. 289-292. ISSN 0375-9474. E-ISSN 1873-1554.
[5th International Conference on Hard Electromagnetic Probes of High-Energy Nuclear Collisions (Hard Probes 2012). Cagliary, 27.05.2012-01.06.2012]
Grant CEP: GA MŠMT LA09013
Institucionální podpora: RVO:61389005
Klíčová slova: STAR * QGP * Heavy Flavor * Open Charm
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 2.499, rok: 2013
http://www.sciencedirect.com/science/article/pii/S0375947412004216

Heavy quarks are a unique probe to study the medium produced in ultra-relativistic heavy ion collisions. The dominant process of charm quark production at RHIC is believed to be initial gluon fusion which can be calculated in perturbative QCD. The upper limit of FONLL calculation seems to be in good agreement with charm cross section measurements at mid-rapidity in p + p collisions at root s(NN) = 200 GeV provided by STAR. The same measurement in Au+Au collisions at equal energy reveals the number-of-binary-collisions scaling of the charm cross section indicating that charm production is dominated by initial hard scatterings. In this article, we report the measurements of D-0, D* in p + p at 0.6 GeV/c < p(T) < 6 GeV/c and D-0 in Au+Au collisions at 0.2 GeV/c < p(T) < 5 GeV/c via hadronic decays D-0 -> K-pi(+), D*(+) -> D-0 pi(+) -> K-pi(+)pi(+) at mid-rapidity vertical bar y vertical bar < 1.
Trvalý link: http://hdl.handle.net/11104/0223941