Journal Article

Differential branching fraction and angular moments analysis of the decay B super(0) arrow right K super(+) pi super(-) mu super(+) mu super(-) in the K sub(0,2) super()(1430) super(0) region

Barlow, R J, Albrecht, J, Alves, A A, Artuso, M, Bachmann, S, d'Argent, P, Barschel, C, Akar, S, Bediaga, I, Bel, L J, Appleby, R B, Batsukh, B, Alexander, M, Aslanides, E, Artamonov, A, Badalov, A, Adeva, B, Ajaltouni, Z, Ali, S, Andreotti, M, Alessio, F, An, L, Aaij, R, Archilli, F, Amerio, S, Bay, A, Andreassi, G, Amato, S, Baszczyk, M, Andrews, JE, Back, J J, Beddow, J, Adinolfi, M, Alkhazov, G, Auriemma, G, Baesso, C, Bellee, V, et. al, Anderlini, L, Baldini, W, Alvarez Cartelle, P, Battista, V, Barter, W, Beaucourt, L, Baalouch, M, Babuschkin, I, Barsuk, S, Bedeschi, F, Amhis, Y, Arnau Romeu, J, Batozskaya, V

2016

Overview

Measurements of the differential branching fraction and angular moments of the decay B super(0) arrow right K super(+) pi super(-) mu super(+) mu super(-) in the K super(+) pi super(-) invariant mass range 1330 < m(K super(+) pi super(-)) < 1530 MeV/c super(2) are presented. Proton-proton collision data are used, corresponding to an integrated luminosity of 3 fb super(-1) collected by the LHCb experiment. Differential branching fraction measurements are reported in five bins of the invariant mass squared of the dimuon system, q super(2), between 0.1 and 8.0 GeV super(2) /c super(4). For the first time, an angular analysis sensitive to the S-, P- and D-wave contributions of this rare decay is performed. The set of 40 normalised angular moments describing the decay is presented for the q super(2) range 1.1-6.0 GeV super(2) /c super(4). [Figure not available: see fulltext.]

• Subject: Bins / Collision dynamics / Decay / Differential thermal analysis / Invariants / Large Hadron Collider / Luminosity