FCNC in leptonic and semileptonic decays of D mesons in a general two-Higgs doublet model

Abstract

Large long-distance standard model effects in FCNC semileptonic D decays can make observable these processes in future measurements. Eventual disagreements in this sector and/or the observation of lepton family violating (LFV) D decays would require an explanatio beyond the SM framework. In this paper we confront present experimental data on leptonic and semileptonic FCNC and LFV D meson decays with a version of the two-Higgs doublet model that allows these effects to occur at tree- level. The stringent bounds on the parameters of the model are obtained from D^0 --> l^+l'^- and D --> pi l^+l'^- decays. The consistency of the model requires that the branching fractions of D --> V l^+l'^- decays should be below the 10^{-9} level.

latex, 10 pages, to appear in Phys. Rev. D

Cited by in corpus (6)

• Rare charm meson decays D->Pl^+l^- and c->ul^+l^- in SM and MSSM
• Lepton Flavor Violation in the Two Higgs Doublet Model type III
• Search for Rare and Forbidden Charm Meson Decays D0--> V l+ l- and h h l l
• Resonant and nonresonant contributions to the weak $D\to V{l}^{+}{l}^{-}$ decays
• Search for t->ch at e+e- Linear Colliders
• Flavor-changing neutral current in production and decay of pseudoscalar mesons in a type III two-Higgs-doublet-model with four-texture Yukawa couplings