Search for the radiative leptonic decay D+ →γe+νe

M. Ablikim, M. N. Achasov, S. Ahmed, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, A. Amoroso, F. F. An, Q. An, J. Z. Bai, O. Bakina, R. Baldini Ferroli, Y. Ban, D. W. Bennett, J. V. Bennett, N. Berger, M. Bertani, D. Bettoni, J. M. BianF. Bianchi, E. Boger, I. Boyko, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. Chai, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, X. K. Chu, G. Cibinetto, H. L. Dai, J. P. Dai, A. Dbeyssi, D. Dedovich, H. Muramatsu, R. Poling, (BESIII Collaboration)

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Using an electron-positron collision data sample of 2.93 fb-1 collected at a center-of-mass energy of s=3.773 GeV with the BESIII detector, we present the first search for the radiative leptonic decay D+→γe+νe. The analysis is performed with a double-tag method. We do not observe a significant D+→γe+νe signal, and obtain an upper limit on the branching fraction of D+→γe+νe decay with the energy of radiative photon larger than 10 MeV of 3.0×10-5 at the 90% confidence level.

Original languageEnglish (US)
Article number071102
JournalPhysical Review D
Issue number7
StatePublished - Apr 1 2017

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    Ablikim, M., Achasov, M. N., Ahmed, S., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., ... (BESIII Collaboration) (2017). Search for the radiative leptonic decay D+ →γe+νe. Physical Review D, 95(7), [071102].