Search for the lepton-flavour violating decay D0 → e±μ∓
A search for the lepton-flavour violating decay D0 →e±μ∓ is made with a dataset corresponding to an integrated luminosity of 3.0 fb-1 of proton–proton collisions at centre-of-mass energies of 7 TeV and 8 TeV, collected by the LHCb experiment. Candidate D0 mesons are selected using the decay D*+ → D0π+ and the D0 →e±μ∓ branching fraction is measured using the decay mode D0 → K-π+ as a normalization channel. No significant excess of D0→e±μ∓ candidates over the expected background is seen, and a limit is set on the branching fraction, B(D0→e±μ∓ ) < 1.3 × 10-8, at 90% confidence level. This is an order of magnitude lower than the previous limit and it further constrains the parameter space in some leptoquark models and in supersymmetric models with R-parity violation.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); European Organization for Nuclear Research (CERN), Geneva (Switzerland); National Science Foundation (NSF); European Union (EU)
- Contributing Organization:
- LHCb Collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1422732
- Journal Information:
- Physics Letters. B, Vol. 754, Issue C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Flavor and new physics opportunities with rare charm decays into leptons
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journal | April 2016 |
Flavour anomalies: a review
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journal | December 2018 |
Averages of b-hadron, c-hadron, and $$\tau $$ τ -lepton properties as of summer 2016
|
journal | December 2017 |
Flavor & new physics opportunities with rare charm decays into leptons | text | January 2015 |
Flavour anomalies: a review | text | January 2018 |
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