A search for associated production of a Z boson with an open charm meson is presented using a data sample, corresponding to an integrated luminosity of 1.0fb−‘ of proton--proton collisions at a centre-of-mass energy of 7\,TeV, collected by the LHCb experiment. %% Seven candidate events for associated production of a Z boson with a D0 meson and four candidate events for a Z boson with a D+ meson are observed with a combined significance of 5.1standard deviations. The production cross-sections in the forward region are measured to be σZ→μ+μ−,D0=2.50±1.12±0.22pb σZ→μ+μ−,D+=0.44±0.23±0.03pb, where the first uncertainty is statistical and the second systematic.

Observation of associated production of a Z boson with a D meson in the forward region

AURIEMMA, Giulio;SATRIANO, Celestina;
2014-01-01

Abstract

A search for associated production of a Z boson with an open charm meson is presented using a data sample, corresponding to an integrated luminosity of 1.0fb−‘ of proton--proton collisions at a centre-of-mass energy of 7\,TeV, collected by the LHCb experiment. %% Seven candidate events for associated production of a Z boson with a D0 meson and four candidate events for a Z boson with a D+ meson are observed with a combined significance of 5.1standard deviations. The production cross-sections in the forward region are measured to be σZ→μ+μ−,D0=2.50±1.12±0.22pb σZ→μ+μ−,D+=0.44±0.23±0.03pb, where the first uncertainty is statistical and the second systematic.
2014
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11563/78502
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