Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type , Research , Preprint 01 Jan 2019Embargo end date: 01 Jan 2018 France, United Kingdom, Greece, Germany, Switzerland, France, Croatia, Germany, United States, United States, Poland, Belarus, Belgium, France, Turkey, Turkey, Turkey, Croatia, United States, Germany, Italy, Belgium, Spain, Turkey, Turkey, Lithuania, Spain, Spain, Germany English Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,019 (eissn: 1029-8479,

Copyright policy )Publicly fundedFunded by:EC | AMVA4NewPhysics, EC | MajorNet

Authors: Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; +193 Authors

Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Dragicevic, M.; Ero, J.; Escalante Del Valle, A.; Flechl, M.; Fruhwirth, R.; Ghete, V. M.; Hrubec, J.; Jeitler, M.; Krammer, N.; Kratschmer, I.; Liko, D.; Madlener, T.; Mikulec, I.; Rad, N.; Rohringer, H.; Schieck, J.; Schofbeck, R.; Spanring, M.; Spitzbart, D.; Taurok, A.; Waltenberger, W.; Wittmann, J.; Wulz, C. -E.; Zarucki, M.; Chekhovsky, V.; Mossolov, V.; Gonzalez, J. Suarez; De Wolf, E. A.; Di Croce, D.; Janssen, X.; Lauwers, J.; Pieters, M.; Van De Klundert, M.; Van; Haevermaet, H.; Van Mechelen, P.; Van Remortel, N.; Abu Zeid; S.; Blekman, F.; D'Hondt, J.; De Bruyn, I.; De Clercq, J.; Deroover, K.; Flouris, G.; Lontkovskyi, D.; Lowette, S.; Marchesini, I.; Moortgat, S.; Moreels, L.; Python, Q.; Skovpen, K.; Tavernier, S.; Van Doninck, W.; Van Mulders, P.; Van Parijs, I.; Beghin, D.; Bilin, B.; Brun, H.; Clerbaux, B.; De Lentdecker, G.; Delannoy, H.; Dorney, B.; Fasanella, G.; Favart, L.; Goldouzian, R.; Grebenyuk, A.; Kalsi, A. K.; Lenzi, T.; Luetic, J.; Postiau, N.; Starling; E.; Thomas, L.; Vander Velde, C.; Vanlaer, P.; Vannerom, D.; Wang, Q.; Cornelis, T.; Dobur, D.; Fagot, A.; Gul, M.; Khvastunov, I.; Poyraz, D.; Roskas, C.; Trocino, D.; Tytgat, M.; Verbeke, W.; Vermassen, B.; Vit, M.; Zaganidis; N.; Bakhshiansohi, H.; Bondu, O.; Brochet, S.; Bruno, G.; Caputo, C.; David, P.; Delaere, C.; Delcourt, M.; Francois; B.; Giammanco, A.; Krintiras, G.; Lemaitre, V.; Magitteri; A.; Mertens, A.; Musich, M.; Piotrzkowski, K.; Saggio, A.; Marono, M. Vidal; Wertz, S.; Zobec, J.; Alves, F. L.; Alves, G. A.; Brito, L.; Martins Junior, M. Correa; Correia; Silva, G.; Hensel, C.; Moraes, A.; Pol, M. E.; Rebello; Teles, P.; Batista Das Chagas, E. Belchior; Carvalho, W.; Chinellato, J.; Coelho, E.; Da Costa, E. M.; Da Silveira, G. G.; De Jesus Damiao, D.; De Oliveira Martins, C.; Fonseca De; Souza, S.; Malbouisson, H.; Matos Figueiredo, D.; Melo De; Almeida, M.; Mora Herrera, C.; Mundim, L.; Nogima, H.; Prado; Da Silva, W. L.; Sanchez Rosas, L. J.; Santoro, A.; Sznajder; A.; Thiel, M.; Tonelli Manganote, E. J.; Torres Da Silva De; Araujo, F.; Vilela Pereira, A.; Ahuja, S.; Bernardes, C. A.; Calligaris, L.; Fernandez Perez Tomei, T. R.; Gregores, E. M.; Mercadante, P. G.; Novaes, S. F.; Padula, Sandra S.; Romero; Abad, D.; Aleksandrov, A.; Hadjiiska, R.; Iaydjiev, P.; Marinov, A.; Misheva, M.; Rodozov, M.; Shopova, M.; Sultanov, G.; Dimitrov, A.; Litov, L.; Pavlov, B.; Petkov; P.; Fang, W.; Gao, X.; Yuan, L.; Ahmad, M.; Bian, J. G.; Chen, G. M.; Chen, H. S.; Chen, M.; Chen, Y.; Jiang, C.; H.; Leggat, D.; Liao, H.; Liu, Z.; Romeo, F.; Shaheen, S.; M.;

doi: 10.1007/jhep01(2019)122 , 10.48550/arxiv.1806.10905 , 10.18154/rwth-2019-02043 , 10.5445/ir/1000089883 , 10.5167/uzh-180047 , 10.3204/pubdb-2018-03122

arXiv: 1806.10905

Search for heavy Majorana neutrinos in same-sign dilepton channels in proton-proton collisions at $$ \sqrt{s}=13 $$ TeV

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Abstract

Abstract A search is performed for a heavy Majorana neutrino (N), produced in leptonic decay of a W boson propagator and decaying into a W boson and a lepton, with the CMS detector at the LHC. The signature used in this search consists of two same-sign leptons, in any flavor combination of electrons and muons, and at least one jet. The data were collected during 2016 in proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 35.9 fb−1. The results are found to be consistent with the expected standard model background. Upper limits are set in the mass range between 20 and 1600 GeV in the context of a Type-I seesaw mechanism, on |V eN|2, |V μN|2, and |V eN V μN * |2/(|V eN|2 + |V μN|2), where V ℓN is the matrix element describing the mixing of N with the standard model neutrino of flavor ℓ = e, μ. For N masses between 20 and 1600 GeV, the upper limits on |V ℓN|2 range between 2.3 × 10−5 and unity. These are the most restrictive direct limits for heavy Majorana neutrino masses above 430 GeV.

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France, United Kingdom, Greece, Germany, Switzerland, France, Croatia, Germany, United States, United States, Poland, Belarus, Belgium, France, Turkey, Turkey, Turkey, Croatia, United States, Germany, Italy, Belgium, Spain, Turkey, Turkey, Lithuania, Spain, Spain, Germany

Related Organizations

Lawrence Berkeley National Laboratory
United States
Spanish National Research Council
Spain
University of California, Davis
United States
University of Turin
Italy
Boston College
United States

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Keywords

13000 GeV-cms, standard model, neutrino: heavy: search for, W: leptonic decay, high energy physics, High Energy Physics - Experiment, LEPTON NUMBER VIOLATION, seesaw model: Type I, High Energy Physics - Experiment (hep-ex), NONCONSERVATION, Hadron-Hadron scattering (experiments), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], BSM, p p --> 2lepton+ 2jet anything, Beyond Standard Model; Hadron-Hadron scattering (experiments); Nuclear and High Energy Physics, info:eu-repo/classification/ddc/530, VMSM, dilepton: same sign, CMS, Physics, Beyond Standard Model; Hadron-Hadron scattering (experiments), DOUBLE-BETA-DECAY, ddc:530, Beyond Standard Model, Hadron-Hadron scattering (experiments), Nuclear and High Energy Physics., Beyond Standard Model, Hadron-Hadron scattering (experiments), mass dependence, Beyond Standard Model; Hadron-Hadron scattering (experiments);, CMS collaboration, Hadron-Hadron Scattering (Experiments), CERN LHC Coll, neutrino: flavor, Physique des particules élémentaires, p p --> 2lepton- 2jet anything, PARTICLE PHYSICS, LHC, upper limit, signature, beyond standard model; hadron-hadron scattering (experiments); majorana neutrinos, p p --> 2lepton+ 2jet anything, p p: scattering, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 530 Physics, MODELS, FOS: Physical sciences, 10192 Physics Institute, 530, p p --> 2lepton- 2jet anything, electron muon, DARK-MATTER, 3106 Nuclear and High Energy Physics, MASSES, ЭБ БГУ::ЕСТЕСТВЕННЫЕ И ТОЧНЫЕ НАУКИ::Физика, experimental particle physics, gauge boson: propagator, PARTICLE PHYSICS;LARGE HADRON COLLIDER;CMS, background, final state: ((n)jet dilepton), neutrino: Majorana: mass, Física, high energy physics ; experimental particle physics ; LHC ; CMS ; standard model, LARGE HADRON COLLIDER, Beyond Standard Model, proton-proton collisions, neutrino: mixing, p p: colliding beams, experimental results

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