Search for the lepton-flavor-violating decay B 0 → K *0 μ ± e ∓
Journal
Physical Review D
Journal Volume
98
Journal Issue
7
Date Issued
2018
Author(s)
Sandilya S. et al.
Trabelsi, K.
Schwartz, A.J.
Adachi, I.
Aihara, H.
Al Said, S.
Asner, D.M.
Atmacan, H.
Aulchenko, V.
Aushev, T.
Ayad, R.
Abstract
We have searched for the lepton-flavor-violating decay B0→K?0μ±e using a data sample of 711 fb-1 that contains 772×106 BB? pairs. The data were collected near the (4S) resonance with the Belle detector at the KEKB asymmetric-energy e+e- collider. No signals were observed, and we set 90% confidence level upper limits on the branching fractions of B(B0→K?0μ+e-)<1.2×10-7, B(B0→K?0μ-e+)<1.6×10-7, and, for both decays combined, B(B0→K?0μ±e)<1.8×10-7. These are the most stringent limits on these decays to date. ? 2018 authors. Published by the American Physical Society.
Type
journal article