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  • Measurement of the B¯s⁰ meson lifetime in Ds⁺π⁻ decays
    Ali, S; Aquines Gutierrez, O; Beaucourt, L; Benson, S; Bird, T; Blusk, S; Bondar, A; Britsch, M; Buytaert, J; Carboni, G; Cardinale, R; Charles, M; Chefdeville, M; Cliff, H V; Comerma-Montells, A; Corti, G; Craik, D C; Currie, R; Davis, A; De Capua, S; De Cian, M; De Miranda, J M; Deckenhoff, M; Dorigo, M; Dujany, G; Eitschberger, U; Farinelli, C; Fay, R; Frei, C; Gandelman, M; Giani', S; Greening, E; Gushchin, E; Hamilton, B; Hansmann-Menzemer, S; Heijne, V; Henrard, P; Heß, M; Hombach, C; Hulsbergen, W; Jacobsson, R; Johnson, D; Kaballo, M; Karbach, T M; Kenyon, I R; Kochebina, O; Lai, A; Lambert, R W; Leo, S; Maciuc, F; Marconi, U; Marino, P; Martens, A; McSkelly, B; Morawski, P; Mussini, M; Neubert, S; Novoselov, A; Onderwater, G; Perazzini, S; Pistone, A; Playfer, S; Price, E; Pugatch, V; Puig Navarro, A; Rakotomiaramanana, B; Rama, M; Raven, G; Reid, M M; Roiser, S; Rouvinet, J; Santacesaria, R; Santovetti, E; Schune, M-H; Seco, M; Sepp, I; Shcheglov, Y; Shekhtman, L; Shevchenko, V; Smith, M; Snoek, H; Souza De Paula, B; Sparkes, A; Stracka, S; Stroili, R; Teubert, F; van Tilburg, J; Tonelli, D; Tran, M T; Vagnoni, V; Vazquez Regueiro, P; Voß, C; Voss, H; Walsh, J; Whitehead, M; Wicht, J; Wilkinson, G; Wormser, G; Zhang, L; Zhokhov, A

    Physical review letters, 2014-Oct-24, 20141024, Letnik: 113, Številka: 17
    Journal Article

    We present a measurement of the ratio of the B¯s⁰ meson lifetime, in the flavor-specific decay to Ds⁺π⁻, to that of the B¯⁰ meson. The pp collision data used correspond to an integrated luminosity of 1  fb(-1), collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010±0.010±0.008 for this ratio with the known B¯⁰ lifetime, we determine the flavor-specific B¯s⁰ lifetime to be τ(B¯s⁰ )=1.535±0.015±0.014  ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions.

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