Measurement of the inclusive and dijet cross-sections of b-jets in pp collisions at $\sqrt{s}=7\mbox{~TeV}$ with the ATLAS detector

• Published in: The European physical journal. C, Particles and fields Particles and fields, 2011-12, Vol.71 (12)
• Main Authors: Alessandria, F., Andreazza, A., Antonelli, M., Aperio Bella, L., Assamagan, K., Beddall, A., Benjamin, D. P., Bensinger, J. R., Bingul, A., Bobrovnikov, V. B., Bruncko, D., Caprini, I., Cattai, A., Cirilli, M., D’Auria, S., D’Onofrio, M., della Volpe, D., Di Ciaccio, A., Dobos, D., Fiascaris, M., Froeschl, R., Fullana Torregrosa, E., Gadfort, T., Gallo, V., Gauthier, L., Ghazlane, H., Gingrich, D. M., Glitza, K. W., Gorbounov, P. A., Goulette, M. P., Hadley, D. R., Heinemann, B., Henderson, R. C. W., Hill, D., Howell, D. F., Hubaut, F., Huhtinen, M., Iacobucci, G., Ishikawa, A., Johansson, K. E., Jovin, T., Kama, S., Kanzaki, J., Keung, J., Kim, H., Knue, A., Koffas, T., Kohout, Z., Kordas, K., Landon, M. P. J., Landsman, H., Lee, H., Luminari, L., Madaras, R. J., Mättig, P., March, L., Martens, F. K., Marzano, F., Mcfayden, J. A., Mechnich, J., Medinnis, M., Misiejuk, A., Morris, J. D., Mueller, K., Nisati, A., Nunes Hanninger, G., O’Neale, S. W., Penwell, J., Perantoni, M., Pirotte, O., Pralavorio, P., Prokofiev, K., Ptacek, E., Quarrie, D. R., Randrianarivony, K., Ruwiedel, C., Rzaeva, S., Saavedra, A. F., Salamanna, G., Sbarra, C., Schaarschmidt, J., Seixas, J. M., Stewart, G. A., Strandberg, S., Takeda, H., Tas, P., Thomson, E., Thun, R. P., Toczek, B., Tonoyan, A., Trincaz-Duvoid, S., Valente, P., Van Der Leeuw, R., Vlachos, S., Vorobiev, A. P., Vreeswijk, M., Vuillermet, R., Vukotic, I., Werth, M., Wynne, B. M.
• Format: Article
• Language: English
• Subjects: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
• ISSN: 1434-6044

The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton–proton collisions at a centre-of-mass energy of s√=7~TeVs=7~TeV , using the ATLAS detector at the LHC. The measurements use data corresponding to an integrated luminosity of 34 pb-1. The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method where the presence of a muon is used to identify semileptonic decays of b-hadrons inside jets. The inclusive b-jet cross-section is measured as a function of transverse momentum in the range 20