Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1998-11-19
Phys.Rev. D59 (1999) 114006
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, Latex, 1 figure included
Scientific paper
10.1103/PhysRevD.59.114006
CP violation from physics beyond the Standard Model is investigated in $B_{l4}$ decays: $B\to D\pi l\bar{\nu}_l$. In the decay process, we include various excited states as intermediate states decaying to the final hadrons, $D+\pi$. We consider the semileptonic decay to a tau lepton family as well. The CP violation is implemented through complex scalar--fermion couplings in the multi-Higgs doublet model and scalar-leptoquark models beyond the Standard Model. With these complex couplings, we calculate the CP-odd rate asymmetry and the optimal asymmetry. We find that for $B_{\tau 4}$ decays the optimal asymmetry is sizable and can be detected at $1\sigma$ level with about $10^6$-$10^7$ $B$-meson pairs, for maximally-allowed values of CP-odd parameters in those extended models.
Kim Chang Sub
Lee Jake
Namgung Wuk
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