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Search for heavy narrow dilepton resonances in pp collisions at root s=7 TeV and s=8 TeV

Abstract: An updated search for heavy narrow resonances decaying to muon or electron pairs using the CMS detector is presented. Data samples from pp collisions at s=7 TeV and 8 TeV at the LHC, with integrated luminosities of up to 5.3 and 4.1 fb?1, respectively, are combined. No evidence for a heavy narrow resonance is observed. The analysis of the combined data sets excludes, at 95% confidence level, a Sequential Standard Model ZSSM ? resonance lighter than 2590 GeV, a superstring-inspired Z? ? lighter than 2260 GeV, and Kaluza?Klein gravitons lighter than 2390 (2030) GeV, assuming that the coupling parameter k/M¯Pl is 0.10 (0.05). These are the most stringent limits to date.

Authorship: 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., Hörmann N., Hrubec J., Jeitler M., Kiesenhofer W., Knünz V., Krammer M., Krätschmer I., Liko D., Mikulec I., Pernicka M., Rabady D., Rahbaran B., Rohringer C., Rohringer H., Schöfbeck R., Strauss J., Taurok A., Waltenberger W., Wulz C.E., Mossolov V., Shumeiko N., Suar

Fuente: Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2013, 720(1-3), 63-82

Publisher: Elsevier

Publication date: 01/03/2013

No. of pages: 20

Publication type: Article

DOI: 10.1016/j.physletb.2013.02.003

ISSN: 0370-2693,1873-2445

Publication Url: https://doi.org/10.1016/j.physletb.2013.02.003

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