Search for the decay D+s → γe+νe

• A search for the rare radiative leptonic decay D+s → γe+νe is performed for the first time using electron-positron collision data corresponding to an integrated luminosity of 3.19  fb−1, collected with the BESIII detector at a center-of-mass energy of 4.178 GeV. No evidence for the D+s → γe+νe decay is seen, and an upper limit of B(D+s → γe+νe)<1.3×10−4 is set on the partial branching fraction at a 90% confidence level for radiative photon energies E∗γ>0.01  GeV.

Ämnesord

NATURVETENSKAP  -- Fysik -- Subatomär fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Subatomic Physics (hsv//eng)

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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