Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK +

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Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G et al (show 89 more authors) , Alvarez Cartelle, P, Alves, AA, Amato, S, Amerio, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Appleby, RB, Archilli, F, d’Argent, P, Arnau Romeu, J, Artamonov, A, Artuso, M, Aslanides, E, Auriemma, G, Baalouch, M, Babuschkin, I, Bachmann, S, Back, JJ, Badalov, A, Baesso, C, Baker, S, Balagura, V, Baldini, W, Barlow, RJ, 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, LJ, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Berezhnoy, A, Bernet, R, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, van Beuzekom, M, Bezshyiko, I, Bifani, S, Billoir, P, Bird, T, Birnkraut, A, Bitadze, A, Bizzeti, A, Blake, T, Blanc, F, Blouw, J, Blusk, S, Bocci, V, Boettcher, T, Bondar, A, Bondar, N, Bonivento, W, Bordyuzhin, I, Borgheresi, A, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bowen, E, Bozzi, C, Braun, S, Britsch, M, Britton, T, Brodzicka, J, Buchanan, E, Burr, C, Bursche, A and Buytaert, J (2017) Measurement of the ratio of branching fractions and difference in CP asymmetries of the decays B + → J/ψπ + and B + → J/ψK + Journal of High Energy Physics, 2017 (3). ISSN 1126-6708, 1029-8479

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Abstract

The ratio of branching fractions and the difference in CP asymmetries of the decays B⁺ → J/ψπ⁺ and B⁺ → J/ψK⁺ are measured using a data sample of pp collisions collected by the LHCb experiment, corresponding to an integrated luminosity of 3 fb⁻¹ at centre-of-mass energies of 7 and 8 TeV. The results are (Formula presented.) where the first uncertainties are statistical and the second are systematic. Combining this result with a recent LHCb measurement of A^{C P}(B⁺→ J/ ψK⁺) provides the most precise estimate to date of CP violation in the decay B⁺ → J/ψπ⁺, (Formula presented.).

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	07 Apr 2017 13:08
Last Modified:	22 Jan 2026 07:43
DOI:	10.1007/JHEP03(2017)036
Open Access URL:	https://arxiv.org/abs/1612.06116
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3006870
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