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ISSN - 15507998, Physical Review D - Particles, Fields, Gravitation and Cosmology, 2010, vol. 81, p. -

Search for lepton flavor violation process e+e -→eμ in the energy region √s=984-1060MeV and φ →eμ decay

Achasov M. N., Beloborodov K. I., Bergyugin A. V., Bogdanchikov A. G., Bukin A. D., Bukin D. A., Dimova T. V., Druzhinin V. P., Golubev V. B., Koop I. A., Korol A. A., Koshuba S. V., Lysenko A. P., Pakhtusova E. V., Serednyakov S. I., Shatunov Yu M., Silagadze Z. K., Skrinsky A. N., Vasiljev A. V.

A search for lepton-flavor-violating process e+e -→eμ in the energy region √s=984-1060MeV with the SND detector at the VEPP-2M e+e- collider is reported. The model independent 90% C.L. upper limits on the e+e -→eμ cross section, σeμ<8pb, as well as on the corresponding φ→eμ branching fraction, B(φ→eμ) <2×10-6 have been obtained, for the polar angles 55°<θ<125°of the final particles. © 2010 The American Physical Society.