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Observation of the production of a W boson in association with a single charm quark

Abstract: ABSTRACT: The first observation of the production of a W boson with a single charm quark (c) jet in p¯p collisions at ?s=1.96??TeV is reported. The analysis uses data corresponding to 4.3??fb?1, recorded with the CDF II detector at the Fermilab Tevatron. Charm quark candidates are selected through the identification of an electron or muon from charm-hadron semileptonic decay within a hadronic jet, and a Wc signal is observed with a significance of 5.7 standard deviations. The production cross section ?Wc(pTc>20??GeV/c,|?c|<1.5)×B(W???) is measured to be 13.6+3.4?3.1??pb and is in agreement with theoretical expectations. From this result the magnitude of the quark-mixing matrix element Vcs is derived, |Vcs|=1.08±0.16 along with a lower limit of |Vcs|>0.71 at the 95% confidence level, assuming that the Wc production through c to s quark coupling is dominant.

Otras publicaciones de la misma revista o congreso con autores/as de la Universidad de Cantabria

 Autoría: Aaltonen T., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Bae T., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bedeschi F., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Bland K.R., Blumenfeld B., Bocci A., Bodek A., Bortoletto

 Fuente: Physical Review Letters 2013, 110(7), 071801

Editorial: American Physical Society

 Año de publicación: 2013

Nº de páginas: 7

Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.110.071801

ISSN: 0031-9007,1079-7114

Url de la publicación: https://doi.org/10.1103/PhysRevLett.110.071801

Autores/as

AALTONEN, T.

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON