NNLO QCD predictions of the asymmetry probe of the Z? pair-production process

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dc.contributor.authorSaygin, Kadir
dc.date.accessioned2024-02-23T14:20:47Z
dc.date.available2024-02-23T14:20:47Z
dc.date.issued2024
dc.departmentNEÜen_US
dc.description.abstractThe paper presents for the first time a novel idea of exploiting asymmetry between differential cross sections of the off-shell Z gamma pair-production in proton-proton (pp) collisions for the final states of a charged-lepton pair plus a photon pp -> Z gamma -> l(+)l(-)gamma (leptonic decay) and of a neutrino pair plus a photon (invisible decay). Asymmetry between the leptonic and invisible decays of the Z gamma process is investigated by using fixed-order predictions through inclusion of next-to-next-to-leading (NNLO) radiative corrections in quantum chromodynamics (QCD) perturbation theory. NNLO QCD predictions are presented at various pp-collision energies as functions of several key observables including transverse momenta and azimuthal-angle separation, regarding the Z gamma decay products. The predicted distributions for the Z gamma asymmetry are provided based on realistic fiducial phase-space requirements in line with the related hadron-collider measurements. The predicted distributions are assessed at various pp-collision energies and in different phase-space regions such as with higher lepton-pair invariant mass m(l+l- )higher neutrino-pair transverse momentum p(T)(vv-)requirements. The Z gamma asymmetry is shown to be significantly sensitive in different regions of phase space including high- m(l+l-) and high-p(T)(vv-)regions. The Z gamma asymmetry can therefore be translated into an important quantity for probing deviation from the Standard Model(SM)predictions. In this regard, the asymmetry probe is proposed as a sensitive indicator for indirect searches for physics beyond the SM encompassing high-mass resonances and dark-matter sectoren_US
dc.identifier.doi10.1088/1402-4896/ad1860
dc.identifier.issn0031-8949
dc.identifier.issn1402-4896
dc.identifier.issue2en_US
dc.identifier.scopus2-s2.0-85182283303en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1088/1402-4896/ad1860
dc.identifier.urihttps://hdl.handle.net/20.500.12452/13313
dc.identifier.volume99en_US
dc.identifier.wosWOS:001137048700001en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherIop Publishing Ltden_US
dc.relation.ispartofPhysica Scriptaen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectHadron Collider Phenomenologyen_US
dc.subjectZ Gamma Pair Productionen_US
dc.subjectAsymmetry In Z Gamma Processen_US
dc.subjectNnlo Qcd Predictionsen_US
dc.titleNNLO QCD predictions of the asymmetry probe of the Z? pair-production processen_US
dc.typeArticleen_US

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