Buscar

Estamos realizando la búsqueda. Por favor, espere...

Measurement of the mass difference between t and t¯ quarks

Abstract: We present a direct measurement of the mass difference between t and ¯t quarks using t¯t candidate events in the lepton+jets channel, collected with the CDF II detector at Fermilab?s 1.96 TeV Tevatron p¯p Collider. We make an event by event estimate of the mass difference to construct templates for top quark pair signal events and background events. The resulting mass difference distribution of data is compared to templates of signals and background using a maximum likelihood fit. From a sample corresponding to an integrated luminosity of 5.6?fb?1, we measure a mass difference, ?Mtop=Mt?M¯t=?3.3±1.4(stat)±1.0(syst)GeV/c2, approximately 2 standard deviations away from the CPT hypothesis of zero mass difference.

 Autoría: Aaltonen T., Álvarez González B., Amerio S., Amidei D., Anastassov A., Annovi A., Antos J., Apollinari G., Appel J.A., Apresyan A., Arisawa T., Artikov A., Asaadi J., Ashmanskas W., Auerbach B., Aurisano A., Azfar F., Badgett W., Barbaro-Galtieri A., Barnes V.E., Barnett B.A., Barria P., Bartos P., Bauce M., Bauer G., Bedeschi F., Beecher D., Behari S., Bellettini G., Bellinger J., Benjamin D., Beretvas A., Bhatti A., Binkley M.,

 Fuente: Physical Review Letters, 2011, 106(15), 152001

 Editorial: American Physical Society

 Fecha de publicación: 01/04/2011

 Nº de páginas: 7

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.106.152001

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.106.152001

Autoría

AALTONEN, T.

BARBARA ALVAREZ GONZALEZ

BRUNO CASAL LARAÑA

FRANCISCO JAVIER CUEVAS MAESTRO

JOSE ENRIQUE PALENCIA CORTEZON