Correlated neutral B meson decays into CP eigenstates

EZEQUIEL ALVAREZ; JOSE BERNABEU ALBEROLA

PHYSICS LETTERS B

Elsevier

Lugar: Amsterdam, Holanda; Año: 2004 vol. 579 p. 79 - 85

0370-2693

 In the two correlated $B$ meson decay experiment we propose to measure intensities relating CP eigenstate ($J/psi K_{S,L}$) decays on $both$ sides, which will be measurable in future upgrades of KEK and PEP. As a CP-forbidden transition, we obtain $I(J/psi K_S, J/psi K_S, Delta t) sim sin ^2 (2eta)$. We calculate in a model independent way all the possible intensities relating final CP and flavour eigenstate decays. Under CPT-invariance, the asymmetries for processes related by CP$Delta t$ vanish for $Delta Gamma =0$ and measure $Delta Gamma$ linearly. We notice the impossibility to isolate the sign of $cos (2et a)$ without an independent knowledge of the sign of $Delta Gamma$. This exhaustion of the possible Golden Plate and flavour decays provides new observables which may throw light in our present understanding of CKM physics.