88 research outputs found

    Radiative and EW Penguin BB Decays at Belle

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    We report on new results on B→K∗γB \to K^* \gamma and recent studies on B→K∗ℓ+ℓ−B \to K^* \ell^+ \ell^- and B→hννˉB \to h \nu \bar{\nu} at Belle at KEKB accelerator. All the analyses used full data sample of 711~fb−1{}^{-1} taken on Υ(4S)\Upsilon(4S) resonance.Comment: Proceedings for The 15th International Conference on Flavor Physics & CP Violation, 5-9 June 2017, Prague, Czech Republic. 9 pages, 3 figures, 1 tabl

    Radiative BB Decays at Belle

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    We report recent results on radiative BB decays at Belle at the KEKB collider.Comment: 4pages. Proceedings of the 39th International Conference on High Energy Physics (ICHEP 2018), 4-11 July, 2018, Seoul, Kore

    Summary of the CKM 2016 working group on rare decays

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    Rare BB, DD, and KK decays offer unique opportunities to probe for evidence of new particles from physics beyond the Standard Model at mass scales extending from the electroweak scale to well above those directly accessible at the LHC. We review a selection of theoretical and experimental results on rare BB, DD, and KK decays illustrating the progress made during the past two years.Comment: 15 pages, 3 figures. To appear in the proceedings of the 9th International Workshop on the CKM Unitarity Triangle, Nov 28- Dec 2 2016, Mumba

    Belle II observation prospects for axion-like particle production from BB meson annihilation decay

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    We investigate a new production mechanism of axion-like particle (ALP) from BB meson annihilation decays and its observation potential at the Belle and Belle II experiments. This mechanism allows for the production of ALP from BB meson decays in association with a large variety of mesons. In this article, we first estimate the branching ratios of such processes with a perturbative QCD method. Focussing on the most promising B→ha′B \to h a^{\prime} (h=K±,π±,D0h=K^\pm, \pi^\pm, D^0 and DsD_s) channels, we perform sensitivity studies for a′a^{\prime} decaying invisibly or into diphoton with Belle and Belle II experiments
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