Abstract
A search for the D0→π+π-μ+μ- decay, where the muon pair does not originate from a resonance, is performed using proton-proton collision data corresponding to an integrated luminosity of 1.0 fb-1 recorded by the LHCb experiment at a centre-of-mass energy of 7 TeV. No signal is observed and an upper limit on the relative branching fraction with respect to the resonant decay mode D0→π+π-Φ(→μ+μ-) under the assumption of a phase-space model, is found to be B(D0→π+π-μ+μ-)/B(D0→π+π-Φ(→μ+μ-)) < 0.96 at 90% confidence level. The upper limit on the absolute branching fraction is evaluated to be B(D0→π+π-μ+μ-) < 5.5 × 10-7 at 90% confidence level. This is the most stringent to date.
Original language | English |
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Pages (from-to) | 234-243 |
Number of pages | 10 |
Journal | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volume | 728 |
Early online date | 28 Nov 2013 |
DOIs | |
Publication status | Published - 20 Jan 2014 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics