Observation of the semileptonic decay B+→ pp¯ μ+νμ

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Aaij, R, Abellán Beteta, C, Ackernley, T, Adeva, B, Adinolfi, M, Afsharnia, H, Aidala, CA, Aiola, S, Ajaltouni, Z, Akar, S et al (show 90 more authors) , Albicocco, P, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Alkhazov, G, Alvarez Cartelle, P, Alves, AA, Amato, S, Amhis, Y, An, L, Anderlini, L, Andreassi, G, Andreotti, M, 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, Bassi, G, Batozskaya, V, Batsukh, B, Battig, A, Bay, A, Becker, M, Bedeschi, F, Bediaga, I, Beiter, A, Bel, LJ, Belavin, V, Belin, S, Beliy, N, Bellee, V, Belous, K, Belyaev, I, Bencivenni, G, Ben-Haim, E, Benson, S, Beranek, S, Berezhnoy, A, Bernet, R, Berninghoff, D, Bernstein, HC, Bertholet, E, Bertolin, A, Betancourt, C, Betti, F, Bettler, MO, Bezshyiko, I, Bhasin, S, Bhom, J, Bieker, MS, Bifani, S, Billoir, P, Bizzeti, A, Bjørn, M, Blago, MP, Blake, T, Blanc, F, Blusk, S, Bobulska, D, Bocci, V, Boente Garcia, O, Boettcher, T, Boldyrev, A, Bondar, A, Bondar, N, Borghi, S, Borisyak, M, Borsato, M, Borsuk, JT, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bozzi, C, Bradley, MJ, Braun, S and Brea Rodriguez, A (2020) Observation of the semileptonic decay B+→ pp¯ μ+νμ Journal of High Energy Physics, 2020 (3). ISSN 1126-6708, 1029-8479

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Abstract

The Cabibbo-suppressed semileptonic decay B⁺→ pp¯ μ⁺ν<inf>μ</inf> is observed for the first time using a sample of pp collisions corresponding to an integrated luminosity of 1.0, 2.0 and 1.7 fb⁻¹ at centre-of-mass energies of 7, 8 and 13 TeV, respectively. The differential branching fraction is measured as a function of the pp¯ invariant mass using the decay mode B⁺→ J/ψK⁺ for normalisation. The total branching fraction is measured to be ℬ(B+→pp¯μ+νμ)=(5.27−0.24+0.23±0.21±0.15)×10−6, where the first uncertainty is statistical, the second systematic and the third is from the uncertainty on the branching fraction of the normalisation channel. [Figure not available: see fulltext.]

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	06 May 2020 10:04
Last Modified:	22 Jan 2026 08:20
DOI:	10.1007/JHEP03(2020)146
Open Access URL:	https://link.springer.com/content/pdf/10.1007/JHEP...
Related Websites:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3086092
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