arXiv subjects

Hikaru Matsuo

Publications and source records attributed to Hikaru Matsuo.

2 recordsLinked to original sources

arXiv2011

Constraints on R-parity violating interactions in supersymmetric standard model from leptonic decays of D_s and B^+ mesons

We study leptonic decays D_s\to τνand B^+ \to τνin R-parity violating (RPV) supersymmetric standard model. The interference between the s-channel slepton exchange and the t-channel squark exchange diagrams could be destructive in a certain model parameter region so that sizable RPV couplings are allowed. Contributions from the RPV interactions to the final states with the lepton flavor violation (LFV), τν_μ(τν_e), are also examined taking account of constraints on the RPV couplings from the other LFV processes.

hep-ph↗

arXiv2010

Leptonic decays of D_s and B^+ mesons in supersymmetric standard model with R-parity violating interactions

We investigate leptonic decays $D_s \to τν_τ$ and $B^+ \to τν_τ$ in R-parity violating (RPV) supersymmetric standard model. Taking account of interference between the s-channel slepton exchange and the $t$-channel squark exchange diagrams, we find that the supersymmetric contributions are cancelled between two diagrams so that the RPV couplings could be sizable under the experimental bounds. Constraints on the relative sign between the RPV couplings in $s$- and $t$-channel diagrams are also discussed.

hep-ph↗