Measurements of D0 and D *
production in p+p collisions at √s=200GeV
We report measurements of charmed-hadron (D0,D *) production cross sections at midrapidity in p+p collisions at a center-of-mass energy of 200 GeV by the STAR experiment. Charmed hadrons were reconstructed via the hadronic decays D0→K -π +, D *+→D0π +→K -π +π + and their charge conjugates, covering the p T range of 0.6-2.0 and 2.0-6.0GeV/c for D0 and D *+, respectively. From this analysis, the charm-pair production cross section at midrapidity is dσ/dy|y=0cc̄= 170±45(stat)-59+38(sys)μb. The extracted charm-pair cross section is compared to perturbative QCD calculations. The transverse momentum differential cross section is found to be consistent with the upper bound of a fixed-order next-to-leading logarithm calculation. © 2012 American Physical Society.
Adamczyk, L; Agakishiev, G; Aggarwal, MM; Ahammed, Z; Alakhverdyants, AV; Alekseev, I; Alford, J; Anderson, BD; Anson, CD; Arkhipkin, D; Aschenauer, E; Averichev, GS; Balewski, J; Banerjee, A; Barnovska, Z; Beavis, DR; Bellwied, R; Betancourt, MJ; Betts, RR; Bhasin, A; Bhati, AK; Bichsel, H; Bielcik, J; Bielcikova, J; Bland, LC; Bordyuzhin, IG; Borowski, W; Bouchet, J; Brandin, AV; Brovko, SG; Bruna, E; Bueltmann, S; Bunzarov, I; Burton, TP; Butterworth, J; Cai, XZ; Caines, H; Calderón De La Barca Sánchez, M; Cebra, D; Cendejas, R; Cervantes, MC; Chaloupka, P; Chattopadhyay, S; Chen, HF; Chen, JH; Chen, JY; Chen, L; Cheng, J; Cherney, M; Chikanian, A; Christie, W; Chung, P; Chwastowski, J; Codrington, MJM; Corliss, R; Cramer, JG; Crawford, HJ; Cui, X; Davila Leyva, A; De Silva, LC; Debbe, RR; Dedovich, TG; Deng, J; Derradi De Souza, R; Dhamija, S; Didenko, L; Ding, F; Dion, A; Djawotho, P; Dong, X; Drachenberg, JL; Draper, JE; Du, CM; Dunkelberger, LE; Dunlop, JC; Efimov, LG; Elnimr, M; Engelage, J; Eppley, G; Eun, L; Evdokimov, O; Fatemi, R; Fazio, S; Fedorisin, J; Fersch, RG; Filip, P; Finch, E; Fisyak, Y; Gagliardi, CA; Gangadharan, DR; Geurts, F; Gliske, S; Gorbunov, YN; Grebenyuk, OG; Grosnick, D; Gupta, S; Guryn, W; Haag, B; Hajkova, O; Hamed, A
Volume / Issue
Electronic International Standard Serial Number (EISSN)
International Standard Serial Number (ISSN)
Digital Object Identifier (DOI)