Search for baryon and lepton number violating decay D± → n(¯n)e±

• Using a data set of electron-positron collisions corresponding to an integrated luminosity of 293  fb−1 taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, a search for the baryon (B) and lepton (L) number violating decays D± → n(¯n)e± is performed. No signal is observed and the upper limits on the branching fractions at the 90% confidence level are set to be 1.43×10−5 for the decays D+(−) → ¯n(n)e+(−) with Δ|B−L| = 0, and 2.91×10−5 for the decays D+(−) → n(¯n)e+(−) with Δ|B−L| = 2, where Δ|B−L| denotes the change in the difference between baryon and lepton numbers.

Ämnesord

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

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

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

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

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