Электронный каталог

Статья

Ablikim, M.
Search for the Leptonic Decay D&dup(+) *> e*+*n&sub(e)&sup(-) / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.]. – Text : electronic // Chinese Physics C. – 2025. – Vol. 49, No. 6. – P. 063001. – URL: https://doi.org/10.1088/1674-1137/adc11d. – Bibliogr.: 27.

We search for the leptonic decay D&sup(+) *> e&sup(+)*n&sub(e) using an e&sup(+)e&sup(-) collision data sample with an integrated luminosity of 20.3 fb&sup(-1) collected with the BESIII detector at a center-of-mass energy of 3.773 GeV. Significant signal is not observed, and an upper limit on the branching fraction of D&sup(+) *> e&sup(+)*n&sub(e) is set as 9.7 x 10&sup(-7), at a confidence level of 90%. Our upper limit is an order of magnitude smaller than the previous limit for this decay mode.



Спец.(статьи,препринты) = С 332.7 - Встречные е+е- и мю+мю- пучки
ОИЯИ = ОИЯИ (JINR)2025