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 1.0 fb-1 of proton-proton collisions at a centre-of-mass energy of 7TeV, 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 5.1 standard deviations. The production cross-sections in the forward region are measured to be αZμ+μ-, D0= 2.50 ±1.12 ±0.22 pb αZμ+μ-, D + = 0.44 ±0.23 ±0.03 pb,where the first uncertainty is statistical and the second systematic. [Figure not available: see fulltext.] © 2014 The Author(s).

Observation of associated production of a Z boson with a D meson in the forward region / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., A. A. J., R., S., A., S., A., Y., A., L. b., A., J., A., R., A., M. b., A., J., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - STAMPA. - 2014:(2014). [10.1007/JHEP04(2014)091]

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

G. Casse;SARTI, ALESSIO;SCIUBBA, Adalberto;
2014

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 1.0 fb-1 of proton-proton collisions at a centre-of-mass energy of 7TeV, 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 5.1 standard deviations. The production cross-sections in the forward region are measured to be αZμ+μ-, D0= 2.50 ±1.12 ±0.22 pb αZμ+μ-, D + = 0.44 ±0.23 ±0.03 pb,where the first uncertainty is statistical and the second systematic. [Figure not available: see fulltext.] © 2014 The Author(s).
2014
01 Pubblicazione su rivista::01a Articolo in rivista
Observation of associated production of a Z boson with a D meson in the forward region / R., A., B., A., M., A., A., A., Z., A., J., A., F., A., M., A., S., A., G., A., P. A., C., A. A. J., R., S., A., S., A., Y., A., L. b., A., J., A., R., A., M. b., A., J., A., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - STAMPA. - 2014:(2014). [10.1007/JHEP04(2014)091]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/665106
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