A search for physics beyond the standard model in the final state with two same-flavour leptons (electrons or muons) and two quarks produced in proton–proton collisions at s=13TeV is presented. The data were recorded by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 2.3fb−1. The observed data are in good agreement with the standard model background prediction. The results of the measurement are interpreted in the framework of a recently proposed model in which a heavy Majorana neutrino, Nℓ, stems from a composite-fermion scenario. Exclusion limits are set for the first time on the mass of the heavy composite Majorana neutrino, mNjavax.xml.bind.JAXBElement@2174b670, and the compositeness scale Λ. For the case mNjavax.xml.bind.JAXBElement@568822e5=Λ, the existence of Ne (Nμ) is excluded for masses up to 4.60 (4.70) TeV at 95% confidence level.

Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV / Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Grossmann, J., Hormann, N., Hrubec, J., Jeitler, M., Konig, A., Kratschmer, I., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 775:(2017), pp. 315-337. [10.1016/j.physletb.2017.11.001]

Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV

Creanza D.;De Filippis N.;Iaselli G.;Pugliese G.;
2017

Abstract

A search for physics beyond the standard model in the final state with two same-flavour leptons (electrons or muons) and two quarks produced in proton–proton collisions at s=13TeV is presented. The data were recorded by the CMS experiment at the CERN LHC and correspond to an integrated luminosity of 2.3fb−1. The observed data are in good agreement with the standard model background prediction. The results of the measurement are interpreted in the framework of a recently proposed model in which a heavy Majorana neutrino, Nℓ, stems from a composite-fermion scenario. Exclusion limits are set for the first time on the mass of the heavy composite Majorana neutrino, mNjavax.xml.bind.JAXBElement@2174b670, and the compositeness scale Λ. For the case mNjavax.xml.bind.JAXBElement@568822e5=Λ, the existence of Ne (Nμ) is excluded for masses up to 4.60 (4.70) TeV at 95% confidence level.
2017
Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV / Sirunyan, A.M., Tumasyan, A., Adam, W., Ambrogi, F., Asilar, E., Bergauer, T., Brandstetter, J., Brondolin, E., Dragicevic, M., Ero, J., Flechl, M., Friedl, M., Fruhwirth, R., Ghete, V.M., Grossmann, J., Hormann, N., Hrubec, J., Jeitler, M., Konig, A., Kratschmer, I., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 775:(2017), pp. 315-337. [10.1016/j.physletb.2017.11.001]
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/211119
Citazioni
  • Scopus 16
  • ???jsp.display-item.citation.isi??? 12
social impact