A search for the D-0 -> pi(+)pi(-)mu(+)mu(-) 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 D-0 -> pi(+)pi(-)phi(-> mu(+)mu(-)), under the assumption of a phase-space model, is found to be B(D-0 -> pi(+)pi(-)mu(+)mu(-))/B(D-0 -> pi(+)pi(-)phi(-> mu(+)mu(-))) < 0.96 at 90% confidence level. The upper limit on the absolute branching fraction is evaluated to be B(D-0 -> pi(+)pi(-)mu(+)mu(-)) < 5.5 x 10(-7) at 90% confidence level. This is the most stringent to date. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.

Search for the decay D-0 -> pi(+)pi(-)mu(+)mu(-) / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., R. B., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 728:(2014), pp. 234-243. [10.1016/j.physletb.2013.11.053]

Search for the decay D-0 -> pi(+)pi(-)mu(+)mu(-)

SARTI, ALESSIO;SCIUBBA, Adalberto;
2014

Abstract

A search for the D-0 -> pi(+)pi(-)mu(+)mu(-) 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 D-0 -> pi(+)pi(-)phi(-> mu(+)mu(-)), under the assumption of a phase-space model, is found to be B(D-0 -> pi(+)pi(-)mu(+)mu(-))/B(D-0 -> pi(+)pi(-)phi(-> mu(+)mu(-))) < 0.96 at 90% confidence level. The upper limit on the absolute branching fraction is evaluated to be B(D-0 -> pi(+)pi(-)mu(+)mu(-)) < 5.5 x 10(-7) at 90% confidence level. This is the most stringent to date. (C) 2013 The Authors. Published by Elsevier B.V. All rights reserved.
2014
01 Pubblicazione su rivista::01a Articolo in rivista
Search for the decay D-0 -> pi(+)pi(-)mu(+)mu(-) / R., A., B., A., M., A., C., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., S., A., S., A., Y., A., L., A., J., A., R., A., J. E., A., R. B., A., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 728:(2014), pp. 234-243. [10.1016/j.physletb.2013.11.053]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/560335
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