Measurement of the mixing-induced CP-violating phase Φ<inf>s</inf> in B0<inf>s</inf> decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π- are selected in 1 fb-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φ<inf>s</inf> = -0.019+0.173+0.004 <inf>-0.174-0.003</inf> rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found. © 2012 Elsevier B.V.

Measurement of the CP-violating phase Φs in B0s → J/ψπ+π- decays

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2012-01-01

Abstract

Measurement of the mixing-induced CP-violating phase Φs in B0s decays is of prime importance in probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π- are selected in 1 fb-1 of pp collision data collected at √ s = 7 TeV with the LHCb detector. A timedependent fit to the data yields a value of Φs = -0.019+0.173+0.004 -0.174-0.003 rad, consistent with the Standard Model expectation. No evidence of direct CP violation is found. © 2012 Elsevier B.V.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11586/179835
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