19,893 research outputs found

    Tensions in the flavour sector

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    Flavour physics is currently well described by the Standard Model except for some measurements which could be signalling new physics. We briefly summarize the status of tensions in rare exclusive semi-leptonic BB decays and in RK/D(∗)R_{K/D^{(\ast)}} ratios. We also address the issue of the long standing tension in the ∣Vcb∣|V_{cb}| and ∣Vub∣|V_{ub}| exclusive/inclusive determinations.Comment: 9 pages, no figures, contribution to the Proceedings of the 12th Conference on Quark Confinement and the Hadron Spectrum (Confinement XII), 28 August-4 September 2016, Thessaloniki (Greece

    Semileptonic D decays and eta-eta^prime mixing

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    We discuss the impact of recent progress in semileptonic D decays on light flavour spectroscopy and estimate mixing parameters in the eta-eta^prime system.Comment: 5 pages, no figures. Formal major changes to match the published versio

    A dynamical approach to semi-inclusive B decays

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    A dynamical approach to semi-inclusive decays based on an effective running coupling for the strong interactions is described.Comment: 4 pages, 4 figures (reference added); to be published in the Proceedings of Quark Confinement and the Hadron Spectrum VII, Ponta Delgada (Portugal), Sep 2-7, 200

    Studies of b-hadron decays to charming final states at LHCb

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    We present studies from the LHCb experiment of decays of the type H_b to H_c X, where H_b represents a beauty hadron (B+, B0 or Lambda_b) and H_c a charmed hadron (D0, D(*)+, Ds or Lambda_c). Such decays are important for the determination of the CKM angle gamma, a key goal of the LHCb physics programme. We exploit the data accumulated in 2010, and in the early months of the 2011 run. We report on the observation of new decay modes, and first measurements on the road to a precise determination of gamma.Comment: To appear in the proceedings of the DPF-2011 Conference, Providence, RI, August 201

    CP violation with Bs

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    The observation of CP violation effects is becoming more and more significant in a variety of channels, due to the impressive experimental effort of the last years. We review recent progress in Bs semileptonic decays and in Bs decays into CP eigenstates.Comment: 4 pages. To appear in Proceedings of Rencontres de Moriond, QCD and High Energy Interactions, La Thuile, March 10-17, 201

    Semileptonic decays and ∣Vxb∣|V_{xb}| determinations

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    We briefly summarize up-to-date results on the determination of the parameters of the Cabibbo-Kobayashi-Maskawa matrix ∣Vcb∣|V_{cb}| and ∣Vub∣|V_{ub}|, which play an important role in the unitarity triangle and in testing the Standard Model, and recent results on semileptonic BB meson decays involving a τ\tau lepton.Comment: Plenary talk at 6th International Conference on New Frontiers in Physics (ICNFP 2017), 17-26 Aug 2017, Kolymbari, Crete, Greece. arXiv admin note: text overlap with arXiv:1612.0376
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