Search for the radiative leptonic decay D+ →γe+νe /M. Ablikim, M. N. Achasov, S. Ahmed [et.al.]

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Другой Автор
Ablikim, M.
Ahmed, S.
Chelkov, G. A.
Achasov, M. N.
Источник
Physical Review D 2017 Vol. 95, № 7. P. 071102-1-071102-8
Аннотация
Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of ffiffi s p ¼ 3.773 GeV with the BESIII detector, we present the first search for the radiative leptonic decay Dþ → γeþνe. The analysis is performed with a double-tag method. We do not observe a significant Dþ → γeþνe signal, and obtain an upper limit on the branching fraction of Dþ → γeþνe decay with the energy of radiative photon larger than 10 MeV of 3.0 × 10−5 at the 90% confidence level.
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$a Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of ffiffi s p ¼ 3.773 GeV with the BESIII detector, we present the first search for the radiative leptonic decay Dþ → γeþνe. The analysis is performed with a double-tag method. We do not observe a significant Dþ → γeþνe signal, and obtain an upper limit on the branching fraction of Dþ → γeþνe decay with the energy of radiative photon larger than 10 MeV of 3.0 × 10−5 at the 90% confidence level.
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Резюме
Using an electron-positron collision data sample of 2.93 fb−1 collected at a center-of-mass energy of ffiffi s p ¼ 3.773 GeV with the BESIII detector, we present the first search for the radiative leptonic decay Dþ → γeþνe. The analysis is performed with a double-tag method. We do not observe a significant Dþ → γeþνe signal, and obtain an upper limit on the branching fraction of Dþ → γeþνe decay with the energy of radiative photon larger than 10 MeV of 3.0 × 10−5 at the 90% confidence level.