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Searches for new physics using the tt- invariant mass distribution in pp collisions at root s=8 TeV

Abstract: Searches for anomalous top quark-antiquark production are presented, based on pp collisions at root s = 8 TeV. The data, corresponding to an integrated luminosity of 19:7 fb-1, were collected with the CMS detector at the LHC. The observed tt- invariant mass spectrum is found to be compatible with the standard model prediction. Limits on the production cross section times branching fraction probe, for the first time, a region of parameter space for certain models of new physics not yet constrained by precision measurements.

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

 Fuente: Physical Review Letters, 2013, 111, 211804 - (ERRATUM) 2014, 112, 119903

 Editorial: American Physical Society

 Fecha de publicación: 23/11/2013

 Nº de páginas: 16

 Tipo de publicación: Artículo de Revista

 DOI: 10.1103/PhysRevLett.111.211804

 ISSN: 0031-9007,1079-7114

 Url de la publicación: https://doi.org/10.1103/PhysRevLett.111.211804

Autoría

CHATRCHYAN, SERGUEI

JAVIER ANDRES BROCHERO CIFUENTES

SHANHUEI CHUANG

MARCOS FERNANDEZ GARCIA

CLARA JORDA LOPE

MARIA AMPARO LOPEZ VIRTO

RAFAEL JOSE MARCO DE LUCAS

FRANCISCA JAVIELA MUÑOZ SANCHEZ

ANA YAIZA RODRIGUEZ MARRERO