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Search for high-mass resonances decaying into t-lepton pairs in pp collisions at v s = 7TeV

Abstract: A search for high-mass resonances decaying into ?+?? is performed using a data sample of pp collisions at s=7TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 4.9 fb?1. The number of observed events is in agreement with the standard model prediction. An upper limit on the product of the resonance cross section and branching fraction into ?-lepton pairs is calculated as a function of the resonance mass. Using the sequential standard model resonance ZSSM? and the superstring-inspired E6 model with resonance Z?? as benchmarks, resonances with standard model couplings with masses below 1.4 and 1.1 TeV, respectively, are excluded at 95% confidence level.

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., Hammer J., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Liko D., Mikulec I., Pernicka M., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Wagner P., Waltenberger W., Walzel G., Widl E., Wulz C.E., Mossolov V., Shumeiko N.,

Fuente: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2012, 716(1), 82-102

Editorial: Elsevier

Año de publicación: 2012

Nº de páginas: 21

Tipo de publicación: Artículo de Revista

DOI: 10.1016/j.physletb.2012.07.062

ISSN: 0370-2693,1873-2445

Url de la publicación: https://doi.org/10.1016/j.physletb.2012.07.062

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