Observation of Bs0→D¯*0ϕ and search for B0→D¯0ϕ decays

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Aaij, R, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F, Alexander, M et al (show 90 more authors) , Alfonso Albero, A, Ali, S, Alkhazov, G, 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, Arzymatov, K, Aslanides, E, Atzeni, M, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barsuk, S, Barter, W, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battista, V, Bay, A, Beddow, J, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Ben-Haim, E, Bencivenni, G, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Van Beuzekom, M, Bezshyiko, I, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Boente Garcia, O, Boettcher, T, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Bossu, F, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bozzi, C, Braun, S, Brodski, M, Brodzicka, J, Brundu, D, Buchanan, E, Buonaura, A, Burr, C, Bursche, A and Buytaert, J (2018) Observation of Bs0→D¯*0ϕ and search for B0→D¯0ϕ decays Physical Review D, 98 (7). ISSN 2470-0010, 2470-0029

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Abstract

The first observation of the Bs0→D̄∗0φ decay is reported, with a significance of more than seven standard deviations, from an analysis of pp collision data corresponding to an integrated luminosity of 3 fb-1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The branching fraction is measured relative to that of the topologically similar decay B0→D̄0π+π- and is found to be B(Bs0→D̄∗0φ)=(3.7±0.5±0.3±0.2)×10-5, where the first uncertainty is statistical, the second systematic, and the third from the branching fraction of the B0→D̄0π+π- decay. The fraction of longitudinal polarization in this decay is measured to be fL=(73±15±4)%. The most precise determination of the branching fraction for the Bs0→D̄0φ decay is also obtained, B(Bs0→D̄0φ)=(3.0±0.3±0.2±0.2)×10-5. An upper limit, B(B0→D̄0φ)<2.0 (2.3)×10-6 at 90% (95%) confidence level is set. A constraint on the ω-φ mixing angle δ is set at |δ|<5.2° (5.5°) at 90% (95%) confidence level.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	03 Dec 2018 09:53
Last Modified:	22 Jan 2026 08:07
DOI:	10.1103/PhysRevD.98.071103
Open Access URL:	http://doi.org/10.1103/PhysRevD.98.071103
Related Websites:	Author
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3029315
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