Search for the lepton-flavor-violating decay B-0 -> K-*0 mu(+/-)e(-/+)

Sandilya, S.; Trabelsi, K.; Schwartz, A. J.; Adachi, I.; Aihara, H.; Al Said, S.; Asner, D. M.; Atmacan, H.; Aulchenko, V.; Aushev, T.; Ayad, R.; Babu, V.; Badhrees, I.; Bahinipati, S.; Bakich, A. M.; Bansal, V.; Behera, P.; Beleno, C.; Bhardwaj, V.; Bhuyan, B.; Bilka, T.; Biswal, J.; Bobrov, A.; Bozek, A.; Bracko, M.; Browder, T. E.; Cao, L.; Cervenkov, D.; Chang, P.; Chekelian, V.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Choi, S. -K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Cunliffe, S.; Dash, N.; Di Carlo, S.; Dingfelder, J.; Dolezal, Z.; Dong, T. V.; Drasal, Z.; Eidelman, S.; Epifanov, D.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Garg, R.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gelb, M.; Giri, A.; Goldenzweig, P.; Golob, B.; Greenwald, D.; Guan, Y.; Haba, J.; Hara, T.; Hayasaka, K.; Hayashii, H.; Hirose, S.; Hou, W. -S.; Hsu, C. -L.; Iijima, T.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jaegle, I.; Jeon, H. B.; Jia, S.; Jin, Y.; Joffe, D.; Joo, K. K.; Julius, T.; Kaliyar, A. B.; Kang, K. H.; Kawasaki, T.; Kichimi, H.; Kiesling, C.; Kim, D. Y.; Kim, J. B.; Kim, K. T.; Kim, S. H.; Kinoshita, K.; Kodys, P.; Korpar, S.; Kotchetkov, D.; Krizan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; et al.

doi:10.1103/PhysRevD.98.071101

research article

Search for the lepton-flavor-violating decay B-0 -> K-*0 mu(+/-)e(-/+)

Sandilya, S.

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Trabelsi, K.

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Schwartz, A. J.

October 9, 2018

Physical Review D

We have searched for the lepton-flavor-violating decay B-0 -> K-*0 mu(+/-)e(-/+) using a data sample of 711 fb(-1) that contains 772 x 10(6) B (B) over bar pairs. The data were collected near the Upsilon(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(B-0 -> K-*0 mu(+)e(-)) < 1.2 x 10(-7), B(B-0 -> K-*0 mu(-)e(+)) < 1.6 x 10(-7), and, for both decays combined, B(B-0 -> K-*0 mu(+/-)e(-/+)) < 1.8 x 10(-7). These are the most stringent limits on these decays to date.