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Measurement of the top-quark mass in tt¯ events with dilepton final states in pp collisions at vs=7 TeV

Abstract: The top-quark mass is measured in proton-proton collisions at s?=7 TeV using a data sample corresponding to an integrated luminosity of 5.0 fb?1 collected by the CMS experiment at the LHC. The measurement is performed in the dilepton decay channel tt¯?(?+??b)(???¯¯¯?b¯¯¯), where ?=e,?. Candidate top-quark decays are selected by requiring two leptons, at least two jets, and imbalance in transverse momentum. The mass is reconstructed with an analytical matrix weighting technique using distributions derived from simulated samples. Using a maximum-likelihood fit, the top-quark mass is determined to be 172.5±0.4 (stat.)±1.5 (syst.) GeV.

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

 Autoría: Chatrchyan S., Khachatryan V., Sirunyan A.M., Tumasyan A., Adam W., Aguilo E., Bergauer T., Dragicevic M., Erö J., Fabjan C., Friedl M., Frühwirth R., Ghete V.M., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V

 Fuente: European Physical Journal C 72, 2202 (2012).

Editorial: Springer New York LLC

 Año de publicación: 2012

Tipo de publicación: Artículo de Revista

 DOI: 10.1140/epjc/s10052-012-2202-z

ISSN: 1434-6044,1434-6052

Url de la publicación: https://doi.org/10.1140/epjc/s10052-012-2202-z

Autoría

CHATRCHYAN, S.

JAVIER ANDRES BROCHERO CIFUENTES

SHANHUEI CHUANG

MARTA FELCINI

MARCOS FERNANDEZ GARCIA

ALBERTO GRAZIANO

CLARA JORDA LOPE

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO

MARIA DEL MAR SOBRON SAÑUDO