Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-03-29
Eur.Phys.J.C71:1715,2011
Physics
High Energy Physics
High Energy Physics - Phenomenology
to be published in EJPC
Scientific paper
10.1140/epjc/s10052-011-1715-1
The experimental observation of lepton-number violating processes would unambiguously indicate the Majorana nature of neutrinos. Various $\Delta L$ = 2 processes for pseudoscalar meson $M_1$ decays to another pseudoscalar meson $M_2$ and two charged leptons $\ell_1$, $\ell_2$ ($M_1^+\to \ell_1^+\ell_2^+M_2^-$) have been studied extensively. Extending the existing literature on the studies of these kinds of processes, we consider the rare decays of heavy mesons to a vector meson or a pseudoscalar meson. These processes have not been searched for experimentally, while they may have sizable decay rates. We calculate their branching fractions and propose to search for these decay modes in the current and forthcoming experiments, in particular at the LHCb.
Wang Guo-Li
Zhang Jin-Mei
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