Search for nonresonant new physics signals in high-mass dilepton events produced in association with b-tagged jets in proton-proton collisions at √s=13 TeV

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dc.contributor.authorChekhovsky, V.
dc.contributor.authorHayrapetyan, A.
dc.contributor.authorMakarenko, V.
dc.contributor.authorTumasyan, A.
dc.contributor.authorAdam, W.
dc.contributor.authorAndrejkovic, J. W.
dc.contributor.authorBenato, L.
dc.date.accessioned2026-04-25T14:19:45Z
dc.date.available2026-04-25T14:19:45Z
dc.date.issued2026
dc.departmentSinop Üniversitesi
dc.description.abstractA search for nonresonant new physics phenomena in high-mass dilepton events produced in association with b-tagged jets is performed using proton-proton collision data collected in 2016-2018 by the CMS experiment at the CERN LHC, at a center-of-mass energy of 13TeV corresponding to an integrated luminosity of 138 fb(-1). The analysis considers two effective field theory models with dimension-six operators; involving four-fermion contact interactions between two leptons (ll, electrons or muons) and b or s quarks (bb ll and bs ll). Two lepton flavor combinations (ee and mu mu) are required and events are classified as having 0, 1, or >= 2 b-tagged jets in the final state. No significant excess is observed over the standard model backgrounds. Upper limits are set on the production cross section of the new physics signals. These translate into lower limits on the energy scale. of 6.9 to 9.0TeV in the bb ll model, depending on model parameters, and on the ratio of energy scale and effective coupling, Lambda/g(*), of 2.0 to 2.6TeV in the bs ll model. Lepton flavor universality is also tested by comparing the dielectron (ee) and dimuon (mu mu) mass spectra for different b-tagged jet multiplicities. No significant deviation from the standard model expectation of unity is observed.
dc.description.sponsorshipconstruction Innovation [B39G680009]; Kavli Foundation; Nvidia Corporation; SuperMicro Corporation; Welch Foundation [C-1845]; Weston Havens Foundation (USA)
dc.description.sponsorshipWe congratulate our colleagues in the CERN accelerator departments for the excellent performance of the LHC and thank the technical and administrative staffs at CERN and at other CMS institutes for their contributions to the success of the CMS effort. In addition, we gratefully acknowledge the computing centers and personnel of the Worldwide LHC Computing Grid and other centers for delivering so effectively the computing infrastructure essential to our analyses. Finally, we acknowledge the enduring support for the construction Innovation, grant B39G680009 (Thailand); the Kavli Foundation; the Nvidia Corporation; the SuperMicro Corporation; the Welch Foundation, contract C-1845; and the Weston Havens Foundation (USA).
dc.identifier.doi10.1007/JHEP02(2026)141
dc.identifier.issn1029-8479
dc.identifier.issue2
dc.identifier.orcid0000-0002-4767-8463
dc.identifier.orcid0000-0002-9404-5933
dc.identifier.orcid0009-0008-1661-3537
dc.identifier.orcid0000-0002-3931-0845
dc.identifier.orcid0000-0003-4543-864X
dc.identifier.orcid0000-0002-5754-0388
dc.identifier.orcid0000-0002-5754-0388
dc.identifier.scopus2-s2.0-105032266962
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1007/JHEP02(2026)141
dc.identifier.urihttps://hdl.handle.net/11486/8157
dc.identifier.wosWOS:001710139900001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherSpringer
dc.relation.ispartofJournal of High Energy Physics
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260420
dc.subjectBeyond Standard Model
dc.subjectHadron-Hadron Scattering
dc.subjectLepton Production
dc.titleSearch for nonresonant new physics signals in high-mass dilepton events produced in association with b-tagged jets in proton-proton collisions at √s=13 TeV
dc.typeArticle

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