A blind analysis searching for the decay B0s →μ+μ− has been performed using proton–proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. With an integrated luminosity of 2.4 fb−1 no excess of events over the background expectation is found and an upper limit is set on the branching fraction BR(B0s →μ+μ−) < 2.2(1.9)×10−8 at 95% (90%) confidence level.
Search for the decay B0s →μ+μ− with the ATLAS detector
CONTA, CLAUDIO;FRANCHINO, SILVIA;FRATERNALI, MARCO;LIVAN, MICHELE;NEGRI, ANDREA;REBUZZI, DANIELA MARCELLA;RIMOLDI, ADELE;USLENGHI, MASSIMILIANO;
2012-01-01
Abstract
A blind analysis searching for the decay B0s →μ+μ− has been performed using proton–proton collisions at a centre-of-mass energy of 7 TeV recorded with the ATLAS detector at the LHC. With an integrated luminosity of 2.4 fb−1 no excess of events over the background expectation is found and an upper limit is set on the branching fraction BR(B0s →μ+μ−) < 2.2(1.9)×10−8 at 95% (90%) confidence level.File in questo prodotto:
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