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Article: Search for Majorana neutrinos in same-sign WW scattering events from pp collisions at √s=13 TeV

TitleSearch for Majorana neutrinos in same-sign <i>WW</i> scattering events from <i>pp</i> collisions at √<i>s</i>=13 TeV
Authors
Issue Date15-Sep-2023
PublisherSpringerOpen
Citation
The European Physical Journal C, 2023, v. 83, n. 9, p. 1-26 How to Cite?
Abstract

A search for Majorana neutrinos in same-sign WW scattering events is presented. The analysis uses root s=13 TeV proton-proton collision data with an integrated luminosity of 140 fb(-1) recorded during 2015-2018 by the ATLAS detector at the Large Hadron Collider. The analysis targets final states including exactly two same-sign muons and at least two hadronic jets well separated in rapidity. The modelling of the main backgrounds, from Standard Model same-sign WW scattering and WZ production, is constrained with data in dedicated signal-depleted control regions. The distribution of the transverse momentum of the second-hardest muon is used to search for signals originating from a heavy Majorana neutrino with a mass between 50 GeV and 20 TeV. No significant excess is observed over the background expectation. The results are interpreted in a benchmark scenario of the Phenomenological Type-I Seesaw model. In addition, the sensitivity to the Weinberg operator is investigated. Upper limits at the 95% confidence level are placed on the squared muon-neutrino-heavy-neutrino mass-mixing matrix element |V-mu N|(2) as a function of the heavy Majorana neutrino's mass m(N), and on the effective mu mu Majorana neutrino mass |m(mu mu)|.


Persistent Identifierhttp://hdl.handle.net/10722/339492
ISSN
2023 Impact Factor: 4.2
2023 SCImago Journal Rankings: 1.451
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorAad, G-
dc.contributor.authorAbbott, B-
dc.contributor.authorAbeling, K-
dc.contributor.authorAbicht, NJ-
dc.contributor.authorAbidi, SH-
dc.contributor.authorAboulhorma, A-
dc.contributor.authorAbramowicz, H-
dc.contributor.authorAbreu, H-
dc.contributor.authorAbulaiti, Y-
dc.contributor.authorHoffman, ACA-
dc.contributor.authorAcharya, BS-
dc.contributor.authorBourdarios, CA-
dc.contributor.authorAdamczyk, L-
dc.contributor.authorAdamek, L-
dc.contributor.authorAddepalli, SV-
dc.contributor.authorAddison, MJ-
dc.contributor.authorAdelman, J-
dc.contributor.authorAdiguzel, A-
dc.contributor.authorAdye, T-
dc.contributor.authorAffolder, AA-
dc.contributor.authorAfik, Y-
dc.contributor.authorAgaras, MN-
dc.contributor.authorAgarwala, J-
dc.contributor.authorAggarwal, A-
dc.contributor.authorAgheorghiesei, C-
dc.contributor.authorAhmad, A-
dc.contributor.authorAhmadov, F-
dc.contributor.authorAhmed, WS-
dc.contributor.authorAhuja, S-
dc.contributor.authorAi, X-
dc.contributor.authorAielli, G-
dc.contributor.authorTamlihat, MA-
dc.contributor.authorAitbenchikh, B-
dc.contributor.authorAizenberg, I-
dc.contributor.authorAkbiyik, M-
dc.contributor.authorÅkesson, TPA-
dc.contributor.authorAkimov, AV-
dc.contributor.authorAkiyama, D-
dc.contributor.authorAkolkar, NN-
dc.contributor.authorAl, Khoury K-
dc.contributor.authorAlberghi, GL-
dc.contributor.authorAlbert, J-
dc.contributor.authorAlbicocco, P-
dc.contributor.authorAlbouy, GL-
dc.contributor.authorAlderweireldt, S-
dc.contributor.authorAleksa, M-
dc.contributor.authorAleksandrov, IN-
dc.contributor.authorAlexa, C-
dc.contributor.authorAlexopoulos, T-
dc.contributor.authorAlfonsi, A-
dc.contributor.authorAlfonsi, F-
dc.contributor.authorAlgren, M-
dc.contributor.authorAlhroob, M-
dc.contributor.authorAli, B-
dc.contributor.authorAli, HMJ-
dc.contributor.authorAli, S-
dc.contributor.authorAlibocus, SW-
dc.contributor.authorAliev, M-
dc.contributor.authorAlimonti, G-
dc.contributor.authorAlkakhi, W-
dc.contributor.authorAllaire, C-
dc.contributor.authorAllbrooke, BMM-
dc.contributor.authorAllen, JF-
dc.contributor.authorFlores, CAA-
dc.contributor.authorAllport, PP-
dc.contributor.authorAloisio, A-
dc.contributor.authorAlonso, F-
dc.contributor.authorAlpigiani, C-
dc.contributor.authorEstevez, MA-
dc.contributor.authorFernandez, AA-
dc.contributor.authorAlviggi, MG-
dc.contributor.authorAly, M-
dc.contributor.authorCoutinho, YA-
dc.contributor.authorAmbler, A-
dc.contributor.authorAmelung, C-
dc.contributor.authorAmerl, M-
dc.contributor.authorAmes, CG-
dc.contributor.authorAmidei, D-
dc.contributor.authorDos, Santos SPA-
dc.contributor.authorAmos, KR-
dc.contributor.authorAnaniev, V-
dc.contributor.authorAnastopoulos, C-
dc.contributor.authorAndeen, T-
dc.contributor.authorAnders, JK-
dc.contributor.authorAndrean, SY-
dc.contributor.authorAndreazza, A-
dc.contributor.authorAngelidakis, S-
dc.contributor.authorAngerami, A-
dc.contributor.authorAnisenkov, AV-
dc.contributor.authorAnnovi, A-
dc.contributor.authorAntel, C-
dc.contributor.authorAnthony, MT-
dc.contributor.authorAntipov, E-
dc.contributor.authorAntonelli, M-
dc.contributor.authorAntrim, DJA-
dc.contributor.authorAnulli, F-
dc.contributor.authorAoki, M-
dc.contributor.authorAoki, T-
dc.contributor.authorPozo, JAA-
dc.contributor.authorAparo, MA-
dc.contributor.authorBella, LA-
dc.contributor.authorAppelt, C-
dc.contributor.authorAranzabal, N-
dc.contributor.authorArcangeletti, C-
dc.contributor.authorArce, ATH-
dc.contributor.authorArena, E-
dc.contributor.authorArguin, JF-
dc.contributor.authorArgyropoulos, S-
dc.contributor.authorArling, J-H-
dc.contributor.authorArmbruster, AJ-
dc.contributor.authorArnaez, O-
dc.contributor.authorArnold, H-
dc.contributor.authorTame, ZPA-
dc.contributor.authorArtoni, G-
dc.contributor.authorAsada, H-
dc.contributor.authorAsai, K-
dc.contributor.authorAsai, S-
dc.contributor.authorAsbah, NA-
dc.contributor.authorAssahsah, J-
dc.contributor.authorAssamagan, K-
dc.contributor.authorAstalos, R-
dc.contributor.authorAtashi, S-
dc.contributor.authorAtkin, RJ-
dc.contributor.authorAtkinson, M-
dc.contributor.authorAtlay, NB-
dc.contributor.authorAtmani, H-
dc.contributor.authorAtmasiddha, PA-
dc.contributor.authorAugsten, K-
dc.contributor.authorAuricchio, S-
dc.contributor.authorAuriol, AD-
dc.contributor.authorAustrup, VA-
dc.contributor.authorAvolio, G-
dc.contributor.authorAxiotis, K-
dc.contributor.authorAzuelos, G-
dc.contributor.authorTu, Yanjun-
dc.contributor.authorHUANG, Shuhui-
dc.contributor.authorParedes Hernandez, Daniela Katherinne-
dc.contributor.authorPizzimento, Luca-
dc.contributor.authorTAM, Kai Chung-
dc.date.accessioned2024-03-11T10:37:04Z-
dc.date.available2024-03-11T10:37:04Z-
dc.date.issued2023-09-15-
dc.identifier.citationThe European Physical Journal C, 2023, v. 83, n. 9, p. 1-26-
dc.identifier.issn1434-6044-
dc.identifier.urihttp://hdl.handle.net/10722/339492-
dc.description.abstract<p>A search for Majorana neutrinos in same-sign WW scattering events is presented. The analysis uses root s=13 TeV proton-proton collision data with an integrated luminosity of 140 fb(-1) recorded during 2015-2018 by the ATLAS detector at the Large Hadron Collider. The analysis targets final states including exactly two same-sign muons and at least two hadronic jets well separated in rapidity. The modelling of the main backgrounds, from Standard Model same-sign WW scattering and WZ production, is constrained with data in dedicated signal-depleted control regions. The distribution of the transverse momentum of the second-hardest muon is used to search for signals originating from a heavy Majorana neutrino with a mass between 50 GeV and 20 TeV. No significant excess is observed over the background expectation. The results are interpreted in a benchmark scenario of the Phenomenological Type-I Seesaw model. In addition, the sensitivity to the Weinberg operator is investigated. Upper limits at the 95% confidence level are placed on the squared muon-neutrino-heavy-neutrino mass-mixing matrix element |V-mu N|(2) as a function of the heavy Majorana neutrino's mass m(N), and on the effective mu mu Majorana neutrino mass |m(mu mu)|.</p>-
dc.languageeng-
dc.publisherSpringerOpen-
dc.relation.ispartofThe European Physical Journal C-
dc.rightsThis work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.-
dc.titleSearch for Majorana neutrinos in same-sign <i>WW</i> scattering events from <i>pp</i> collisions at √<i>s</i>=13 TeV-
dc.typeArticle-
dc.identifier.doi10.1140/epjc/s10052-023-11915-y-
dc.identifier.scopuseid_2-s2.0-85171580591-
dc.identifier.volume83-
dc.identifier.issue9-
dc.identifier.spage1-
dc.identifier.epage26-
dc.identifier.eissn1434-6052-
dc.identifier.isiWOS:001090983200001-
dc.publisher.placeNEW YORK-
dc.identifier.issnl1434-6044-

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