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  • Observation of the suppressed decay Lambda sub( )b super(0) arrow right p pi super(-) mu super(+) mu super(-)
    Aaij, R; Adeva, B; Adinolfi, M; Ajaltouni, Z; Akar, S; Albrecht, J; Alessio, F; Alexander, M; Ali, S; Alkhazov, G; Alvarez Cartelle, P; Alves, A A; Amato, S; Amerio, S; Amhis, Y; An, L; Anderlini, L; Andreassi, G; Andreotti, M; Andrews, JE; Appleby, R B; Archilli, F; d'Argent, P; Arnau Romeu, J; Artamonov, A; Artuso, M; Aslanides, E; Auriemma, G; Baalouch, M; Babuschkin, I; Bachmann, S; Back, J J; Badalov, A; Baesso, C; Baker, S; Baldini, W; Barlow, R J; Barschel, C; Barsuk, S; Barter, W; Baszczyk, M; Batozskaya, V; Batsukh, B; Battista, V; Bay, A; Beaucourt, L; Beddow, J; Bedeschi, F; Bediaga, I; Bel, L J; et. al

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

    (ProQuest: ... denotes formulae and/or non-USASCII text omitted; see image).The suppressed decay Lambda sub( )b super(0) arrow right p pi super(-) mu super(+) mu super(-), excluding the J/ psi and psi (2S) arrow right mu super(+) mu super(-) resonances, is observed for the first time with a significance of 5.5 standard deviations. The analysis is performed with proton-proton collision data corresponding to an integrated luminosity of 3 fb super(-1) collected with the LHCb experiment. The Lambda sub( )b super(0) arrow right p pi super(-) mu super(+) mu super(-) branching fraction is measured relative to the Lambda sub( )b super(0) arrow right J/ psi ( arrow right mu super(+) mu super(-))p pi super(-) branching fraction giving ... ... where the first uncertainty is statistical and the second is systematic. This is the first observation of a b arrow right d transition in a baryonic decay. Figure not available: see fulltext.

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