Measurement of CP asymmetry in Bs0 → Ds∓ K ± decays
In: Journal of High Energy Physics, Jg. 2018 (2018-03-01), Heft 3
Online
academicJournal
- 59
We report the measurements of the CP -violating parameters in Bs0 → Ds∓K± decays observed in pp collisions, using a data set corresponding to an integrated luminosity of 3.0 fb−1 recorded with the LHCb detector. We measure Cf = 0.73 ± 0.14 ± 0.05, AfΔΓ = 0.39 ± 0.28 ± 0.15, Af=0.31±0.28±0.15, Sf = −0.52 ± 0.20 ± 0.07, Sf¯= − 0.49 ± 0.20 ± 0.07 , where the uncertainties are statistical and systematic, respectively. These parameters are used together with the world-average value of the Bs0 mixing phase, −2βs, to obtain a measurement of the CKM angle γ from Bs0 → Ds∓K± decays, yielding γ = (128− 22+ 17)° modulo 180°, where the uncertainty contains both statistical and systematic contributions. This corresponds to 3.8 σ evidence for CP violation in the interference between decay and decay after mixing.
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Measurement of CP asymmetry in Bs0 → Ds∓ K ± decays
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Autor/in / Beteiligte Person: | Aaij, R ; Adeva, B ; Adinolfi, M ; Ajaltouni, Z ; Akar, S ; Albrecht, J ; Alessio, F ; Alexander, M ; 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 ; Aslanides, E ; Atzeni, M ; Auriemma, G ; Baalouch, M ; Babuschkin, I ; Bachmann, S ; Back, JJ ; Badalov, A ; Baesso, C ; Baker, S ; Balagura, V ; Baldini, W ; Baranov, A ; Barlow, RJ ; Barschel, C ; Barsuk, S ; Barter, W ; Baryshnikov, F ; Batozskaya, V ; Battista, V ; Bay, A ; Beaucourt, L ; 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 ; Bocci, V ; Boettcher, T ; Bondar, A ; Bondar, N ; Bordyuzhin, I ; Borghi, S ; Borisyak, M ; Borsato, M ; Bossu, F ; Boubdir, M ; Bowcock, TJV ; Bowen, E ; Bozzi, C ; Braun, S ; Brodzicka, J ; Brundu, D ; Buchanan, E ; Burr, C ; Bursche, A |
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Zeitschrift: | Journal of High Energy Physics, Jg. 2018 (2018-03-01), Heft 3 |
Veröffentlichung: | eScholarship, University of California, 2018 |
Medientyp: | academicJournal |
Umfang: | 59 |
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