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Measurement of the $B_s^0\to J/\psi K_S^0$ branching fraction

The $B_s^0\to J/\psi K_S^0$ branching fraction is measured in a data sample corresponding to 0.41$fb^{-1}$ of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2$\beta$ measurement from $B^0\to J/\psi K_S^0$ The...

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Detalles Bibliográficos
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A, Urquijo, P, Uwer, U, Vagnoni, V, Valenti, G, Vazquez Gomez, R, Vazquez Regueiro, P, Vecchi, S, Velthuis, J J, Veltri, M, Viaud, B, Videau, I, Vieira, D, Vilasis-Cardona, X, Visniakov, J, Vollhardt, A, Volyanskyy, D, Voong, D, Vorobyev, A, Vorobyev, V, Voss, H, Waldi, R, Wandernoth, S, Wang, J, Ward, D R, Watson, N K, Webber, A D, Websdale, D, Whitehead, M, Wiedner, D, Wiggers, L, Wilkinson, G, Williams, M P, Williams, M, Wilson, F F, Wishahi, J, Witek, M, Witzeling, W, Wotton, S A, Wyllie, K, Xie, Y, Xing, F, Xing, Z, Yang, Z, Young, R, Yushchenko, O, Zangoli, M, Zavertyaev, M, Zhang, F, Zhang, L, Zhang, W C, Zhang, Y, Zhelezov, A, Zhong, L, Zvyagin, A
Lenguaje:eng
Publicado: 2012
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2012.05.062
http://cds.cern.ch/record/1446426
Descripción
Sumario:The $B_s^0\to J/\psi K_S^0$ branching fraction is measured in a data sample corresponding to 0.41$fb^{-1}$ of integrated luminosity collected with the LHCb detector at the LHC. This channel is sensitive to the penguin contributions affecting the sin2$\beta$ measurement from $B^0\to J/\psi K_S^0$ The time-integrated branching fraction is measured to be $BF(B_s^0\to J/\psi K_S^0)=(1.83\pm0.28)\times10^{-5}$. This is the most precise measurement to date.