Measurement of charm production at central rapidity in proton-proton collisions at √s =7 TeV
Publication date
2012
Authors
Abelev, B.I.
Christakoglou, P.
Peitzmann, T.
Snellings, Raimond
de Haas, A.P.
Nooren, G
Oskamp, C.J.
van den Brink, A.
Kuijer, P
Botje, M.A.J.
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Abstract
The pt-differential inclusive production cross sections of the prompt charmed mesons D0, D+, and D∗+ 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∗+ → D0π+, and their charge conjugates, about 8,400 D0, 2,900 D+, and 2,600 D∗+ mesons with 1 <pt <24 GeV/c were counted, after selection cuts, in a data sample of 3.14×108 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.
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Abelev, B I, Christakoglou, P, Peitzmann, T, Snellings, R J M, de Haas, A P, Nooren, G J L, Oskamp, C J, van den Brink, A, Kuijer, P G, Botje, M A J, van der Kolk, N, Mischke, A, van Leeuwen, M, Grelli, A, Verweij, M, Bilandzic, A, Chojnacki, M, Perez Lara, C E, Thomas, D & Luparello, G 2012, 'Measurement of charm production at central rapidity in proton-proton collisions at √s =7 TeV', Journal of High Energy Physics, vol. 1201, no. 128, pp. 1-29. https://doi.org/10.1007/JHEP01(2012)128