Search for CP violation in Λb 0→pK− and Λb 0→pπ− 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, Audurier, B, 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, Belin, S, 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, Bhasin, S, Bhom, J, 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, Bossu, F, Boubdir, M, Bowcock, TJV ORCID: 0000-0002-3505-6915, Bozzi, C, Braun, S, Brodski, M, Brodzicka, J and Brossa Gonzalo, A (2018) Search for CP violation in Λb 0→pK− and Λb 0→pπ− decays. Physics Letters Section B Nuclear Elementary Particle and High Energy Physics, 787. pp. 124-133. ISSN 0370-2693

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Abstract

A search for CP violation in Λ<inf>b</inf> ⁰→pK⁻ and Λ<inf>b</inf> ⁰→pπ⁻ decays is presented using a sample of pp collisions collected with the LHCb detector and corresponding to an integrated luminosity of 3.0fb⁻¹. The CP -violating asymmetries are measured to be A<inf>CP</inf> ^pK⁻=−0.020±0.013±0.019 and A<inf>CP</inf> ^pπ⁻=−0.035±0.017±0.020, and their difference A<inf>CP</inf> ^pK⁻−A<inf>CP</inf> ^pπ⁻=0.014±0.022±0.010, where the first uncertainties are statistical and the second systematic. These are the most precise measurements of such asymmetries to date.

Item Type:	Article
Depositing User:	Symplectic Admin
Date Deposited:	03 Dec 2018 09:52
Last Modified:	11 Jun 2025 04:18
DOI:	10.1016/j.physletb.2018.10.039
Open Access URL:	https://doi.org/10.1016/j.physletb.2018.10.039
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3029316