Search for baryon and lepton number violating decays D+ -> (Lambda)over-bar((Sigma)over-bar(0))e(+) and D+ -> Lambda(Sigma(0))e(+)
Using a 2.93 fb − 1 data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to ( 8296 ± 31 ± 64 ) × 10 3 D + D − pairs, we search for the baryon and lepton number violating decays D + → ¯ Λ ( ¯ Σ 0 ) e + and D +...
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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Format: | Journal article |
Language: | English |
Published: |
American Physical Society
2020
|
Summary: | Using a
2.93
fb
−
1
data sample of electron-positron collisions taken with the BESIII detector at a center-of-mass energy of 3.773 GeV, which corresponds to
(
8296
±
31
±
64
)
×
10
3
D
+
D
−
pairs, we search for the baryon and lepton number violating decays
D
+
→
¯
Λ
(
¯
Σ
0
)
e
+
and
D
+
→
Λ
(
Σ
0
)
e
+
. No obvious signals are found with the current statistics and upper limits on the branching fractions of these four decays are set at the level of
10
−
6
at 90% confidence level. |
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