TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Martinez-Vidal, F.
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
AU  - Sanchez Mayordomo, C.
PY  - 2016
DA  - 2016//
TI  - Search for the lepton-flavour violating decay D-0 -> e(+/-)mu(-/+)
T2  - Phys. Lett. B
JO  - Physics Letters B
SP  - 167
EP  - 175
VL  - 754
PB  - Elsevier Science Bv
AB  - A search for the lepton-flavour violating decay D-0 -> e(+/-)mu(-/+) 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 D-0 mesons are selected using the decay D*(+) -> D-0 pi(+) and the D-0 -> e(+/-)mu(+) branching fraction is measured using the decay mode D-0 -> K-pi(+) as a normalization channel. No significant excess of D-0 -> e(+/-)mu(-/+) candidates over the expected background is seen, and a limit is set on the branching fraction, B(D-0 -> e(+/-)mu(-/+)) < 1.3 x10(-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.
SN  - 0370-2693
UR  - https://arxiv.org/abs/1512.00322
UR  - https://doi.org/10.1016/j.physletb.2016.01.029
DO  - 10.1016/j.physletb.2016.01.029
LA  - English
N1  - WOS:000369601000027
ID  - LHCbCollaborationAaij_etal2016
ER  -