| 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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