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http://hdl.handle.net/2445/185617
Title: | Search for the decay D-0 -> pi(+)pi(-)mu(+)mu(-) |
Author: | Camboni, Alessandro Comerma-Montells, A. Garrido Beltrán, Lluís Picatoste Olloqui, Eduardo Potterat, Cédric Rives Molina, Vicente José LHCb Collaboration |
Keywords: | Hadrons Gran Col·lisionador d'Hadrons Física de partícules Experiments Hadrons Large Hadron Collider (France and Switzerland) Particle physics Experiments |
Issue Date: | Jan-2014 |
Publisher: | Elsevier B.V. |
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 centreof-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. |
Note: | Reproducció del document publicat a: https://doi.org/10.1016/j.physletb.2013.11.053 |
It is part of: | Physics Letters B, 2014, vol. 728, p. 234-243 |
URI: | http://hdl.handle.net/2445/185617 |
Related resource: | https://doi.org/10.1016/j.physletb.2013.11.053 |
ISSN: | 0370-2693 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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