Measurement of mixing-induced CP violation in B-s0 decays is of prime importance in probing new physics. So far only the channel B-s0→J/ψφ has been used. Here we report on a measurement using an LHCb data sample of 0.41 fb-1, in the CP odd eigenstate J/ψf0(980), where f0(980)→π+π-. A time-dependent fit of the data with the B-s0 lifetime ; the difference in widths of the heavy ; light eigenstates constrained to the values obtained from B-s0→J/ψφ yields a value of the CP violating phase of -0.44±0.44±0.02 rad, consistent with the Standard Model expectation. © 2012 CERN.

Measurement of the CP violating phase φs in B-s0→J/ψf0(980)

PALANO, Antimo;PAPPAGALLO, MARCO IGNAZIO;
2012

Abstract

Measurement of mixing-induced CP violation in B-s0 decays is of prime importance in probing new physics. So far only the channel B-s0→J/ψφ has been used. Here we report on a measurement using an LHCb data sample of 0.41 fb-1, in the CP odd eigenstate J/ψf0(980), where f0(980)→π+π-. A time-dependent fit of the data with the B-s0 lifetime ; the difference in widths of the heavy ; light eigenstates constrained to the values obtained from B-s0→J/ψφ yields a value of the CP violating phase of -0.44±0.44±0.02 rad, consistent with the Standard Model expectation. © 2012 CERN.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11586/179829
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