Measurement of the (B)over-bar(s)(0) Meson Lifetime in D-s(+)pi(-) Decays
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Measurement of the (B)over-bar(s)(0) Meson Lifetime in D-s(+)pi(-) Decays

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Measurement of the (B)over-bar(s)(0) Meson Lifetime in D-s(+)pi(-) Decays

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LHCb Collaboration; Martínez Vidal, Fernando Perfil; Oyanguren Campos, Arantza Perfil; Ruiz Valls, Pablo; Sánchez Mayordomo, Carlos
Aquest document és un/a article, creat/da en: 2014
We present a measurement of the ratio of the (B) over bar (0)(s) meson lifetime, in the flavor-specific decay to D-s(+)pi(-), to that of the (B) over bar (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) over bar (0) lifetime, we determine the flavor-specific (B) over bar (0)(s) lifetime to be tau((B) over bar (0)(s) ) = 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.

    LHCb Collaboration Martínez Vidal, Fernando Oyanguren Campos, Arantza Ruiz Valls, Pablo Sánchez Mayordomo, Carlos 2014 Measurement of the (B)over-bar(s)(0) Meson Lifetime in D-s(+)pi(-) Decays Physical Review Letters 113 17 172001-1 172001-9
http://dx.doi.org/10.1103/PhysRevLett.113.172001
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