Inclusive b-hadron production cross section with muons in pp collisions at sqrt(s) = 7 TeV

• Published in: The journal of high energy physics 2011-01, Vol.3
• Main Authors: Khachatryan, V., Sillou, D., Besancon, M., Choudhury, S., Dejardin, M., Denegri, D., Fabbro, B., Faure, J.L., Ferri, F., Ganjour, S., Gentit, F.X., Givernaud, A., Gras, P., Hamel de Monchenault, G., Jarry, P., Locci, E., Malcles, J., Marionneau, M., Millischer, L., Rander, J., Rosowsky, A., Shreyber, I., Titov, M., Verrecchia, P., Baffioni, S., Beaudette, F., Bianchini, L., Bluj, M., Broutin, C., Busson, Pierre, Charlot, C., Dahms, T., Dobrzynski, L., Granier de Cassagnac, R., Haguenauer, M., Miné, P., Mironov, C., Ochando, C., Paganini, P., Sabes, D., Salerno, R., Sirois, Y., Thiebaux, C., Wyslouch, B., Zabi, A., Agram, J.-L., Andrea, J., Besson, A., Bloch, D., Bodin, D., Brom, J.-M., Cardaci, M., Chabert, E.C., Collard, C., Conte, E., Drouhin, F., Ferro, C., Fontaine, J.-C., Gelé, D., Goerlach, U., Greder, S., Juillot, P., Karim, M., Le Bihan, A.-C., Mikami, Y., van Hove, P., Fassi, F., Mercier, D., Baty, C., Beaupere, N., Bedjidian, M., Bondu, O., Boudoul, G., Boumediene, D., Brun, H., Chanon, N., Chierici, R., Contardo, D., Depasse, P., El Mamouni, H., Falkiewicz, A., Fay, J., Gascon, S., Ille, B., Kurca, T., Le Grand, T., Lethuillier, M., Mirabito, L., Perries, S., Sordini, V., Tosi, S., Tschudi, Y., Verdier, P., Xiao, H.
• Format: Article
• Language: English
• Subjects: High Energy Physics - Experiment; Physics
• ISSN: 1126-6708; 1029-8479
• DOI: 10.1007/JHEP03(2011)090

A measurement of the b-hadron production cross section in proton-proton collisions at sqrt(s)=7 TeV is presented. The dataset, corresponding to 85 inverse nanobarns, was recorded with the CMS experiment at the LHC using a low-threshold single-muon trigger. Events are selected by the presence of a muon with transverse momentum greater than 6 GeV with respect to the beam direction and pseudorapidity less than 2.1. The transverse momentum of the muon with respect to the closest jet discriminates events containing b hadrons from background. The inclusive b-hadron production cross section is presented as a function of muon transverse momentum and pseudorapidity. The measured total cross section in the kinematic acceptance is sigma(pp to b+X to mu + X') =1.32 +/- 0.01 (stat) +/- 0.30 (syst) +/- 0.15 (lumi) microbarns.