Amplitude analysis of the B(s)0→^K∗0^K¯∗0 decays and measurement of the branching fraction of the B→ K^{∗ 0}K¯ ^{∗ 0} decay

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Aaij, R, Abellán Beteta, C, Adeva, B, Adinolfi, M, Aidala, CA, Ajaltouni, Z, Akar, S, Albicocco, P, Albrecht, J, Alessio, F et al (show 90 more authors) , Alexander, M, Alfonso Albero, A, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, Andrews, JE, Archilli, F, Arnau Romeu, J, Artamonov, A, Artuso, M, Arzymatov, K, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Back, JJ, Baker, S, Balagura, V, Baldini, W, Baranov, A, Barlow, RJ, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Batozskaya, V, Batsukh, B, Battig, A, Battista, V, Bay, A, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belin, S, Beliy, N, Bellee, V, Belloli, N, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, I, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, Birnkraut, A, Bizzeti, A, Bjørn, M, Blago, MP, 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, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bozzi, C, Braun, S, Brodski, M, Brodzicka, J, Brossa Gonzalo, A, Brundu, D, Buchanan, E and Buonaura, A (2019) Amplitude analysis of the B(s)0→^K∗0^K¯∗0 decays and measurement of the branching fraction of the B→ K^{∗ 0}K¯ ^{∗ 0} decay. Journal of High Energy Physics, 2019 (7).

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Abstract

© 2019, The Author(s). The B→ K∗ 0K¯ ∗ 0 and Bs0→K∗0K¯∗0 decays are studied using proton-proton collision data corresponding to an integrated luminosity of 3 fb−1. An untagged and timeintegrated amplitude analysis of B(s)0 → (K+π−)(K−π+) decays in two-body invariant mass regions of 150 MeV/c2 around the K∗0 mass is performed. A stronger longitudinal polarisation fraction in the B→ K∗ 0K¯ ∗ 0 decay, fL = 0.724 ± 0.051 (stat) ± 0.016 (syst), is observed as compared to fL = 0.240 ± 0.031 (stat) ± 0.025 (syst) in the Bs0→K∗0K¯∗0 decay. The ratio of branching fractions of the two decays is measured and used to determine ℬ(B0→K∗0K¯∗0)=(8.0±0.9(stat)±0.4(syst))×10−7.[Figure not available: see fulltext.]

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	14 Aug 2019 09:44
Last Modified:	19 Jan 2023 00:31
DOI:	10.1007/JHEP07(2019)032
Open Access URL:	http://doi.org/10.1007/JHEP07(2019)032
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3051711