Title: | Search for a heavy composite Majorana neutrino in the final state with two leptons and two quarks at s=13TeV |
Authors: | Tumasyan, A Adam, W Ambrogi, F Asilar, E Bergauer, T Brandstetter, J Brondolin, E Dragicevic, M Erö, J Flechl, M Friedl, M Frühwirth, R Ghete, VM Grossmann, J Hörmann, N Hrubec, J Jeitler, M König, A Krätschmer, I Liko, D Madlener, T Mikulec, I Pree, E Rabady, D Rad, N Rohringer, H Schieck, J Schöfbeck, R Spanring, M Spitzbart, D Strauss, J Waltenberger, W Wittmann, J Wulz, CE Zarucki, M Chekhovsky, V Mossolov, V Suarez Gonzalez, J De Wolf, EA Janssen, X Lauwers, J Van De Klundert, M Van Haevermaet, H Van Mechelen, P Van Remortel, N Van Spilbeeck, A Abu Zeid, S Blekman, F D'Hondt, J De Bruyn, I De Clercq, J Deroover, K Flouris, G Lowette, S Moortgat, S Moreels, L Olbrechts, A Python, Q Skovpen, K Tavernier, S Van Doninck, W Van Mulders, P Van Parijs, I Brun, H Clerbaux, B De Lentdecker, G Delannoy, H Fasanella, G Favart, L Goldouzian, R Grebenyuk, A Karapostoli, G Lenzi, T Luetic, J Maerschalk, T Marinov, A Randle-conde, A Seva, T Vander Velde, C Vanlaer, P Vannerom, D Yonamine, R Zenoni, F Zhang, F Cimmino, A Cornelis, T Dobur, D Fagot, A Gul, M Khvastunov, I Poyraz, D Salva, S Tytgat, M Verbeke, W Zaganidis, N Bakhshiansohi, H Bondu, O |
Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 2017, 775 pp. 315 - 337 |
Abstract: | © 2017 The Author(s) 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, N ℓ , stems from a composite-fermion scenario. Exclusion limits are set for the first time on the mass of the heavy composite Majorana neutrino, m N ℓ , and the compositeness scale Λ. For the case m N ℓ =Λ, the existence of N e (N μ ) is excluded for masses up to 4.60 (4.70) TeV at 95% confidence level. |
URI: | http://bura.brunel.ac.uk/handle/2438/15924 |
DOI: | http://dx.doi.org/10.1016/j.physletb.2017.11.001 |
ISSN: | 0370-2693 |
Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers
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