Publication

First observation of the decay B-s(0) -> K(0)(K)over-bar(0)

Olivier Schneider, Aurelio Bay, Guido Haefeli, Tatsuya Nakada, Frédéric Blanc, Yasmine Sara Amhis, Julien Rouvinet, Barinjaka Rakotomiaramanana, Raluca Anca Muresan, Johan Luisier, Anne Keune, Vincent Fave, Hubert Degaudenzi, Mathias Oleg Knecht
2012
Journal Articles

Abstract

The first observation of the decay B-s(0) -> K*(0)(K) over bar*(0) is reported using 35 pb(-1) of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8 +/- 7.5 B-s(0) -> (K+pi(-))(K-pi(+)) events are observed within +/- 50 MeV/c(2) of the B-s(0) mass and 746 MeV/c(2) < m(K pi) < 1046 MeV/c(2), mostly coming from a resonant B-s(0) -> K*(0)(K) over bar*(0) signal. The branching fraction and the CP-averaged K*(0) longitudinal polarization fraction are measured to B(B-s(0) -> K*(0)(K) over bar*(0)) = (2.81 +/- 0.46(stat.) +/- 0.45(syst.) +/- 0.34(f(s)/f(d))) x 10(-5) and f(L) = 0.31 +/- 0.12(stat.) +/- 0.04(syst.). (C) 2012 CERN. Published by Elsevier B.V. All rights reserved.

Official source

https://infoscience.epfl.ch/entities/publication/51c465d3-fd40-4236-8ad7-77ed07667c2c

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First observation of the decay B-s(0) -> K(0)(K)over-bar(0)

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First observation of the decay B-s(0) -> K*(0)(K)over-bar*(0)

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Search for $B_{(s)}^{*0}\rightarrow \mu ^+\mu ^-$ in $B_c^+\rightarrow \pi ^+\mu ^+\mu ^-$ decays

Measurement of the strong-phase difference between D0 and D0 ¯ ?k K-p p- in bins of phase space

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First observation of the decay B-s(0) -> K(0)(K)over-bar(0)