Measurement of charm production at central rapidity in proton-proton collisions at root s=7 TeV

0388921 - ÚJF 2013 RIV IT eng J - Článek v odborném periodiku
Abelev, B. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Čepila, J. - Krus, M. - Kushpil, Svetlana - Kushpil, Vasilij - Mareš, Jiří A. - Pachr, M. - Petráček, V. - Petráň, M. - Polák, Karel - Pospíšil, V. - Šmakal, R. - Šumbera, Michal - Tlustý, D. - Vajzer, Michal - Wagner, V. - Zach, Č. - Závada, Petr … celkem 962 autorů
Measurement of charm production at central rapidity in proton-proton collisions at root s=7 TeV.
Journal of High Energy Physics. Roč. 2012, č. 1 (2012), 128/1-128/29. ISSN 1126-6708
Grant CEP: GA MŠMT LA08015
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: hadron-hadron scattering * LHC * ALICE
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 5.618, rok: 2012

The pt-differential inclusive production cross sections of the prompt charmed mesons D0 , D+ , and D(star)+ in the rapidity range |y| < 0.5 were measured in proton-proton collisions at √ s = 7 TeV at the LHC using the ALICE detector. Reconstructing the decays D0 → K− π + , D+ → K− π + π + , D(star)+ → D0 π + , and their charge conjugates, about 8,400 D0 , 2,900 D+ , and 2,600 D(star)+ mesons with 1 < pt < 24 GeV/c were counted, after selection cuts, in a data sample of 3.14×10 8 events collected with a minimum-bias trigger (integrated luminosity Lint = 5 nb −1 ). The results are described within uncertainties by predictions based on perturbative QCD.
Trvalý link: http://hdl.handle.net/11104/0217827