First Observation of CP Violation in B¯0→DCP(*)h0 Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

Abdesselam, A.; Adachi, I.; Adametz, A.; Adye, T.; Ahmed, H.; Aihara, H.; Akar, S.; Alam, M. S.; Albert, J.; Al Said, S.; Andreassen, R.; Angelini, C.; Anulli, F.; Arinstein, K.; Arnaud, N.; Asner, D. M.; Aston, D.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Band, H. R.; Banerjee, Sw.; Barberio, E.; Bard, D. J.; Barlow, R. J.; Batignani, G.; Beaulieu, A.; Bellis, M.; Ben-Haim, E.; Bernard, D.; Bernlochner, F. U.; Bettarini, S.; Bettoni, D.; Bevan, A. J.; Bhardwaj, V.; Bhuyan, B.; Bianchi, F.; Biasini, M.; Biswal, J.; Blinov, V. E.; Bloom, P. C.; Bobrov, A.; Bomben, M.; Bondar, A.; Bonneaud, G. R.; Bonvicini, G.; Bozek, A.; Bozzi, C.; Bračko, M.; Briand, H.; Browder, T. E.; Brown, D. N.; Brown, D. N.; Bünger, C.; Burchat, P. R.; Buzykaev, A. R.; Calabrese, R.; Calcaterra, A.; Calderini, G.; Carpinelli, M.; Cartaro, C.; Casarosa, G.; Cenci, R.; Červenkov, D.; Chang, P.; Chao, D. 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R.; Koch, H.; Kodyš, P.; Kolomensky, Yu. G.; Korpar, S.; Kovalskyi, D.; Kowalewski, R.; Kravchenko, E. A.; Križan, P.; Krokovny, P.; Kuhr, T.; Kumar, R.; Kuzmin, A.; Kwon, Y. -J.; Lacker, H. M.; Lafferty, G. D.; Lanceri, L.; Lange, D. J.; Lankford, A. J.; Latham, T. E.; Leddig, T.; Le Diberder, F.; Lee, D. H.; Lee, I. S.; Lee, M. J.; Lees, J. P.; Leith, D. W.  G.  S.; Leruste, Ph.; Lewczuk, M. J.; Lewis, P.; Libby, J.; Lockman, W. S.; Long, O.; Lopes Pegna, D.; LoSecco, J. M.; Lou, X. C.; Lueck, T.; Luitz, S.; Lukin, P.; Luppi, E.; Lusiani, A.; Luth, V.; Lutz, A. M.; Lynch, G.; MacFarlane, D. B.; Malaescu, B.; Mallik, U.; Manoni, E.; Marchiori, G.; Margoni, M.; Martellotti, S.; Martinez-Vidal, F.; Masuda, M.; Mattison, T. S.; Matvienko, D.; McKenna, J. A.; Meadows, B. T.; Miyabayashi, K.; Miyashita, T. S.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moll, A.; Monge, M. R.; Moon, H. K.; Morandin, M.; Muller, D. 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doi:10.1103/PhysRevLett.115.121604

Title: First Observation of $C P$ Violation in ${\bar{B}}^{0} \to D_{C P}^{()} h^{0}$ Decays by a Combined Time-Dependent Analysis of BABAR* and Belle Data

Journal Article · Wed Sep 16 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.121604· OSTI ID:1594419

Abdesselam, A.; Adachi, I.; Adametz, A.; Adye, T.; Ahmed, H.; Aihara, H.; Akar, S.; Alam, M. S.; Albert, J.; Al Said, S.; Andreassen, R.; Angelini, C.; Anulli, F.; Arinstein, K.; Arnaud, N.; Asner, D. M.; Aston, D.; Aulchenko, V.; Aushev, T.; Ayad, R. more »

We report a measurement of the time-dependent CP asymmetry of B¯⁰ → D$$^{(*)}_{CP}$$h⁰ decays, where the light neutral hadron h⁰ is a π⁰, η, or ω meson, and the neutral D meson is reconstructed in the CP eigenstates K⁺K^–, K$$^{0}_{S}$$π⁰, or K$$^{0}_{S}$$ω. The measurement is performed combining the final data samples collected at the Υ(4S) resonance by the BABAR and Belle experiments at the asymmetric-energy B factories PEP-II at SLAC and KEKB at KEK, respectively. The data samples contain (471 ± 3) × 10⁶ BB¯ pairs recorded by the BABAR detector and (772 ± 11) × 10⁶ BB¯ pairs recorded by the Belle detector. We measure the CP asymmetry parameters –ηfS = +0.66 ± 0.10(stat) ± 0.06(syst) and C = –0.02 ± 0.07(stat) ± 0.03(syst). Here, these results correspond to the first observation of CP violation in B¯⁰ → D$$^{(*)}_{CP}$$h⁰ decays. The hypothesis of no mixing-induced CP violation is excluded in these decays at the level of 5.4 standard deviations.

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Research Organization:: Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Contributing Organization:: BaBar Collaboration; Belle Collaboration

Grant/Contract Number:: SC0009973

OSTI ID:: 1594419

Alternate ID(s):: OSTI ID: 1221695

Journal Information:: Physical Review Letters, Vol. 115, Issue 12; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 16 works

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Evidence for the decay

Ω_{c}^{0} \to π^{+} Ω (2012)^{-} \to π^{+} (\bar{K} Ξ)^{-}

Journal Article · Fri Sep 10 00:00:00 EDT 2021 · Physical Review D · OSTI ID:1594419

Li, Y.; Tang, S. S.; Jia, S.; +189 more

Measurement of

B^{0} \to D_{s}^{-} K_{S}^{0} π^{+}

and

B^{+} \to D_{s}^{-} K^{+} K^{+}

branching fractions

Journal Article · Thu Feb 26 00:00:00 EST 2015 · Physical Review. D, Particles, Fields, Gravitation and Cosmology · OSTI ID:1594419

Wiechczynski, J.; Stypula, J.; Abdesselam, A.; +171 more

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Title: First Observation of C P Violation in B ¯ 0 → D C P ( * ) h 0 Decays by a Combined Time-Dependent Analysis of BABAR and Belle Data

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Cited By (2)

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Title: First Observation of $C P$ Violation in ${\bar{B}}^{0} \to D_{C P}^{()} h^{0}$ Decays by a Combined Time-Dependent Analysis of BABAR* and Belle Data