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  • Alkhazov, G.; Romeu, J. Arnau; Baalouch, M.; Barschel, C.; Barsuk, S.; Batozskaya, V.; Belloli, N.; Belyaev, I.; Blake, T.; Borsato, M.; Buchanan, E.; Akiba, K. Carvalho; Casse, G.; Cojocariu, L.; Collins, P.; Coombs, G.; Crocombe, A.; D’Ambrosio, C.; De Aguiar Francisco, O.; De Paula, L.; Deckenhoff, M.; Derkach, D.; Dungs, K.; Durante, P.; Ebert, M.; Egorychev, V.; Fazzini, D.; Fiorini, M.; Fohl, K.; Frei, C.; Gallorini, S.; Pardiñas, J. García; Gascon, D.; Gersabeck, E.; Giubega, L.; Hamilton, B.; Harnew, N.; Harrison, J.; Henrard, P.; Hill, D.; Hulsbergen, W.; Idzik, M.; Jaeger, A.; Jiang, F.; Jost, B.; Kvaratskheliya, T.; Lai, A.; Leroy, O.; Lupton, O.; Maev, O.; Malinin, A.; Mancinelli, G.; Benito, C. Marin; Santos, D. Martinez; Mauri, A.; Maurin, B.; Merk, M.; Monteil, S.; Mountain, R.; Müller, D.; Owen, P.; Panman, J.; Pappalardo, L. L.; Passaleva, G.; Patrignani, C.; Playfer, S.; Navarro, A. Puig; Redi, F.; dos Reis, A. C.; Renaudin, V.; Silva, J. J. Saborido; Sadykhov, E.; Saitta, B.; Santacesaria, R.; Satta, A.; Schmidt, B.; Schubert, K.; Schubiger, M.; Schune, M.-H.; Serra, N.; Shears, T.; Skwarnicki, T.; Smith, E.; Smith, I. T.; Stahl, S.; Stefko, P.; Stemmle, S.; Stenyakin, O.; Straticiuc, M.; Tolk, S.; Trisovic, A.; Valat, S.; Volkov, V.; Weiden, A.; Wicht, J.; Yao, Y.; Yushchenko, O.; Zhang, L.; Zhang, Y.; Zheng, Y.

    The journal of high energy physics, 04/2017, Letnik: 2017, Številka: 4
    Journal Article

    A bstract A search for the rare two-body charmless baryonic decay B + → p Λ ¯ is performed with pp collision data, corresponding to an integrated luminosity of 3 fb −1 , collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. An excess of B + → p Λ ¯ candidates with respect to background expectations is seen with a statistical significance of 4.1 standard deviations, and constitutes the first evidence for this decay. The branching fraction, measured using the B +  →  K S 0 π + decay for normalisation, is ℬ B + → p Λ ¯ = 2 . 4 − 0.8 + 1.0 ± 0.3 × 1 0 − 7 , where the first uncertainty is statistical and the second systematic.