Measurement of mixing-induced CP violation in B0s decays is of prime importance in probing new physics. So far only the channel B0s to 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/ψ f0(980), where f0(980) to π+π−. A timedependent fit of the data with the B0s lifetime and the difference in widths of the heavy and light eigenstates constrained to the values obtained from B0s to J/ψφ yields a value of the CP violating phase of −0.44±0.44±0.02 rad, consistent with the Standard Model expectation.
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Titolo: | Measurement of the CP violating phase φs in B0sto J/ψ f0(980) |
Autori: | |
Data di pubblicazione: | 2012 |
Rivista: | |
Abstract: | Measurement of mixing-induced CP violation in B0s decays is of prime importance in probing new physics. So far only the channel B0s to 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/ψ f0(980), where f0(980) to π+π−. A timedependent fit of the data with the B0s lifetime and the difference in widths of the heavy and light eigenstates constrained to the values obtained from B0s to J/ψφ yields a value of the CP violating phase of −0.44±0.44±0.02 rad, consistent with the Standard Model expectation. |
Handle: | http://hdl.handle.net/11567/379535 |
Appare nelle tipologie: | 01.01 - Articolo su rivista |