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Indirect CP violation in the B-system
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| Bañuls Polo, María Carmen; Bernabeu Alberola, José Perfil | |||
| This document is a artículoDate1998 | |||
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Este documento está disponible también en : http://hdl.handle.net/10550/53308 |
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| We show that, contrary to the flavour mixing amplitude q/p, both Re(epsilon) and Im(epsilon) are observable quantities, where epsilon is the phase- convention-independent CP mixing. We consider semileptonic B_d decays from a CP tag and build appropriate time-dependent asymmetries to separate out Re(epsilon) and Im(epsilon). 'Indirect' CP violation would have in Im(epsilon)/(1+|epsilon|^2) its most prominent manifestation in the B-system, with expected values in the standard model ranging from -0.37 to -0.18. This quantity is controlled by a new observable phase: the relative one between the CP-violating and CP-conserving parts of the effective hamiltonian. For time-integrated rates we point out a (Delta Gamma)--> (Sigma Gamma) transmutation which operates in the perturbative CP mixing. | |||
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Bañuls Polo, María Carmen; Bernabeu Alberola, José (1998) Indirect CP violation in the B-system Physics Letters B 423 1-2 151 156 |
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| http://dx.doi.org/10.1016/S0370-2693(98)00115-4 |
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22 - Física [3699]