$B^0_{(s)} \rightarrow \mu^+\mu^-$ at CMS
| Autor: | Ligabue, Franco |
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| Rok vydání: | 2014 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | The search for the rare \BMuMu and \BsMuMu decays in pp collisions at $\sqrt s = 7$~GeV and $\sqrt s = 8$~GeV, collected at the LHC in 2011 and 2012, is briefly reviewed. The data analyzed by CMS correspond to a total integrated luminosity of 5 and 20 $\rm fb^{-1}$, respectively. The time-integrated average branching fraction $\left<{\mathcal B }( { B^{0}_{s}\rightarrow \mu^+\mu^-} )\right>$ has been measured to be $(3.0 ^{+1.0}_{-0.9})\times 10^{-9}$ in accordance with the Standard Model predictions, while an upper limit $\left<{ \mathcal B }( B^{0}\rightarrow \mu^+\mu^-)\right> < 1.1\times 10^{-9}) $ has been placed on the other investigated decay at 95% CL. A preliminary combination with the results from LHCb is also presented for both channels, and prospects for the future are briefly discussed. Comment: 6 pages, 7 figures, proceedings of LHCP2014 conference, NY |
| Databáze: | arXiv |
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