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    Adinolfi, M.; Alvarez Cartelle, P.; Anderlini, L.; Bedeschi, F.; Bediaga, I.; Belloli, N.; Bifani, S.; Bocci, V.; Bonivento, W.; Borgheresi, A.; Borisyak, M.; Borsato, M.; Boubdir, M.; Bowcock, T.J.V.; Bozzi, C.; Brodzicka, J.; Brundu, D.; Calabrese, R.; Campana, P.; Capriotti, L.; Cavallero, G.; Chatzikonstantinidis, G.; Ciezarek, G.; Clarke, P.E.L.; De Aguiar Francisco, O.; De Capua, S.; Decamp, D.; Dettori, F.; Dreimanis, K.; Easo, S.; Egorychev, V.; Esen, S.; Falabella, A.; Ferreira Rodrigues, F.; Fontanelli, F.; Funk, W.; Garsed, P.J.; Ghez, Ph; Girard, O.G.; Golubkov, D.; Graciani Diaz, R.; Graziani, G.; Hadjivasiliou, C.; Hamilton, B.; Han, X.; Huard, Z.C.; Hushchyn, M.; Jacobsson, R.; Jawahery, A.; Kenzie, M.; Khanji, B.; Koliiev, S.; Krokovny, P.; Krzemien, W.; Kuonen, A.K.; Lefrançois, J.; Lemos Cid, E.; Leverington, B.; Loh, D.; Lusiani, A.; Maciuc, F.; Marconi, U.; Martellotti, G.; McNab, A.; McNulty, R.; Milanes, D.A.; Mombächer, T.; Nakada, T.; Nandakumar, R.; Needham, M.; Neufeld, N.; Oyanguren, A.; Palutan, M.; Pappagallo, M.; Parker, W.; Passaleva, G.; Perazzini, S.; Plo Casasus, M.; Prisciandaro, J.; Santimaria, M.; Schmelling, M.; Schneider, O.; Schreiner, H.F.; Shapoval, I.; Shekhtman, L.; Sirendi, M.; Smith, E.; Soares Lavra, l.; Storaci, B.; Szumlak, T.; Toriello, F.; Tresch, M.; Viana Barbosa, J.V.; Voneki, B.; Vázquez Sierra, C.; Wimberley, J.; Witek, M.; Xie, Y.; Zheng, Y.; Zhukov, V.

    Physics letters. B, 01/2018, Letnik: 776, Številka: C
    Journal Article

    The decay Z→bb¯ is reconstructed in pp collision data, corresponding to 2 fb−1 of integrated luminosity, collected by the LHCb experiment at a centre-of-mass energy of s=8 TeV. The product of the Z production cross-section and the Z→bb¯ branching fraction is measured for candidates in the fiducial region defined by two particle-level b-quark jets with pseudorapidities in the range 2.2<η<4.2, with transverse momenta pT>20 GeV and dijet invariant mass in the range 45<mjj<165 GeV. From a signal yield of 5462±763Z→bb¯ events, where the uncertainty is statistical, a production cross-section times branching fraction of 332±46±59 pb is obtained, where the first uncertainty is statistical and the second systematic. The measured significance of the signal yield is 6.0 standard deviations. This measurement represents the first observation of the Z→bb¯ production in the forward region of pp collisions.