Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-12-13
Phys.Lett.B475:111-119,2000
Physics
High Energy Physics
High Energy Physics - Phenomenology
12 pages, 5 figures
Scientific paper
10.1016/S0370-2693(00)00061-7
Non-leptonic B_s decays into CP eigenstates that are caused by \bar b -> \bar cc\bar s quark-level transitions, such as B_s -> D_s^+D^-_s, J/psi eta^(') or J/psi phi, provide a powerful tool to search for ``new physics'', as the CP-violating effects in these modes are tiny in the Standard Model. We explore these effects for a particular scenario of new physics, the left-right-symmetric model with spontaneous CP violation. In our analysis, we take into account all presently available experimental constraints on the parameters of this model, i.e. those implied by K- and B-decay observables; we find that CP asymmetries as large as O(40%) may arise in the B_s channels, whereas the left-right-symmetric model favours a small CP asymmetry in the ``gold-plated'' mode B_d -> J/psi K_S. Such a pattern would be in favour of B-physics experiments at hadron machines, where the B_s modes are very accessible.
Ball Patricia
Fleischer Robert
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