Measurement of mixing-induced CP violation in B-s0 decays is of prime importance in probing new physics. So far only the channel B-s 0→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 and the difference in widths of the heavy and 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.

Measurement of the CP violating phase Phi_s in anti-B0s -> J/Psi f0(980) / R., A., C., A.B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P., A.C., A. A., A., S., A., Y., A., J., A., R. B., A., O., A.G., F., A., L., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 707:5(2012), pp. 497-505. [10.1016/j.physletb.2012.01.017]

Measurement of the CP violating phase Phi_s in anti-B0s -> J/Psi f0(980)

BIZZETI, Andrea;
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-s 0→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 and the difference in widths of the heavy and 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
707
5
497
505
Measurement of the CP violating phase Phi_s in anti-B0s -> J/Psi f0(980) / R., A., C., A.B., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., G., A., P., A.C., A. A., A., S., A., Y., A., J., A., R. B., A., O., A.G., F., A., L., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 707:5(2012), pp. 497-505. [10.1016/j.physletb.2012.01.017]
R., Aaij; C., Abellan Beteta; B., Adeva; M., Adinolfi; C., Adrover; A., Affolder; Z., Ajaltouni; J., Albrecht; F., Alessio; M., Alexander; G., Alkhazo...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/706149
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