Journal
PHYSICAL REVIEW D
Volume 84, Issue 7, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.071106
Keywords
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Funding
- MEXT
- JSPS
- Nagoya's TLPRC (Japan)
- ARC
- DIISR (Australia)
- NSFC (China)
- MSMT (Czechia)
- DST (India)
- MEST
- NSDC of KISTI
- WCU (Korea)
- MNiSW (Poland)
- MES
- RFAAE (Russia)
- ARRS (Slovenia)
- SNSF (Switzerland)
- NSC
- MOE (Taiwan)
- DOE (USA)
- MEXT of Japan
- NRF [2010-0015967]
- Grants-in-Aid for Scientific Research [18071003] Funding Source: KAKEN
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We perform the first search for lepton-number-violating B+ -> D(-)l(+)l'(+) decays, where l and l' stand for e or mu, using 772 x 10(6) B (B) over bar pairs accumulated at the Y(4S) resonance with the Belle detector at the KEKB e(+)e(-) collider. No evidence for these decays has been found. Assuming uniform three-body phase space distributions for the D(-)l(+)l'(+) decays, we set the following upper limits on the branching fractions at 90% confidence level.B(B+ -> D(-)e(+)e(+)) < 2.6 x 10(-6), B(B+ -> D(-)e(+mu+)) < 1.8 x 10(-6) and B(B+ -> D-mu(+)mu(+)) < 1.1 x 10(-6).
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