Search for baryon- and lepton-number violating decays $D^0 \rightarrow \overline{p} e^+$ and $D^0 \rightarrow pe^-$ - INSPIRE

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Search for baryon- and lepton-number violating decays $D^0 \rightarrow \overline{p} e^+$ and $D^0 \rightarrow pe^-$

BESIII

Collaboration

Dec 20, 2021

9 pages

Published in:

Phys.Rev.D 105 (2022) 3, 032006

Published: Feb 1, 2022

e-Print:

2112.10972 [hep-ex]

DOI:

10.1103/PhysRevD.105.032006 (publication)

PDG:

{{\mathit D}^{0}}

\rightarrow

{{\mathit p}}{{\mathit e}^{-}}

Experiments:

BEPC-BES-III

View in:

reference search17 citations

Citations per year

Abstract: (APS)

Using an electron-positron collision data sample corresponding to an integrated luminosity of

2.93 {fb}^{- 1}

collected with the BESIII detector at a center-of-mass energy of 3.773 GeV, we search for the baryon-number and lepton-number violating decays

D^{0} \to \bar{p} e^{+}

and

D^{0} \to p e^{-}

. No obvious signals are found with the current statistics. The upper limits on the branching fractions for

D^{0} \to \bar{p} e^{+}

and

D^{0} \to p e^{-}

are set to be

1.2 \times 10^{- 6}

and

2.2 \times 10^{- 6}

at 90% confidence level, respectively.

Note:

8 pages, 3 figures

electron positron: annihilation
electron positron: colliding beams
D0: semileptonic decay
lepton number: violation
baryon number: violation
D0: branching ratio: upper limit
Beijing Stor
experimental results
D0 --> p electron
D0 --> anti-p positron

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Figures(5)

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