Observation of associated production of a Z boson with a D meson in the forward region
Autor/a
Fecha de publicación
2014-04-14Resumen
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
$
σZ→μ+μ−,D0=2.50±1.12±0.22 pbσZ→μ+μ−,D+=0.44±0.23±0.03 pb,
$
where the first uncertainty is statistical and the second systematic.
Tipo de documento
Artículo
Versión publicada
Lengua
Inglés
Materias (CDU)
539 - Constitución física de la materia
Palabras clave
Gran col·lisionador d'hadrons (França i Suïssa)
Partícules (Física nuclear)
Col·lisions (Física nuclear)
Protons
Páginas
17 p.
Publicado por
Springer
Publicado en
Journal of High Energy Physics, 2014, Vol. 2014, No.4 (Abril)
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© CERN
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