Measurement of the ZZ production cross section and Z -> l(+)l(-)l '(+)l '(-) branching fraction in pp collisions at root s=13TeV
dc.contributor.author | Khachatryan, V. | |
dc.contributor.author | Işıldak, Bora | |
dc.date.accessioned | 2017-06-15T13:35:43Z | |
dc.date.available | 2017-06-15T13:35:43Z | |
dc.date.issued | 2016 | |
dc.identifier.issn | 1873-2445 | |
dc.identifier.uri | http://www.sciencedirect.com/science/article/pii/S0370269316306256 | |
dc.identifier.uri | http://hdl.handle.net/10679/5336 | |
dc.description.abstract | Four-lepton production in proton-proton collisions, pp -> (Z/gamma*)(Z/gamma*)-> l(+)l(-)l '(+)l '(-), where l,l '(-) = e or mu, is studied at a center-of-mass energy of 13 TeV with the CMS detector at the LHC. The data sample corresponds to an integrated luminosity of 2.6fb(-1). The ZZ production cross section, sigma(pp -> ZZ) = 14.6(-1.8)(+1.9)(stat)(-0.3)(+0.5) (syst) +/-0.2 (theo) +/-0.4 (lumi) pb, is measured for events with two opposite-sign, sameflavor lepton pairs produced in the mass region 60 < m(l+l-) m (l'+l'-) < 120GeV. The Z boson branching fraction to four leptons is measured to be B(Z -> l(+)l(-)l '(+)l '(-)) = 4.9(-0.7)(+0.8)(stat)(-0.2)(+0.3)(syst)(-0.1)(+0.2)(theo) +/- 0.1 (lumi) x10(-6) for the four-lepton invariant mass in the range 80 < m(l+)l-l'+l' < 100GeVand dilepton mass m(l+l-) > 4GeVfor all opposite-sign, same-flavor lepton pairs. The results are in agreement with standard model predictions. | |
dc.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.relation | info:turkey/grantAgreement/TUBITAK | |
dc.relation.ispartof | Physics Letters B | |
dc.rights | restrictedAccess | |
dc.title | Measurement of the ZZ production cross section and Z -> l(+)l(-)l '(+)l '(-) branching fraction in pp collisions at root s=13TeV | en_US |
dc.type | Article | en_US |
dc.peerreviewed | yes | |
dc.publicationstatus | published | en_US |
dc.contributor.department | Özyeğin University | |
dc.contributor.authorID | (ORCID 0000-0002-0283-5234 & YÖK ID 124605) Işıldak, Bora | |
dc.contributor.ozuauthor | Işıldak, Bora | |
dc.identifier.startpage | 280 | |
dc.identifier.endpage | 303 | |
dc.identifier.wos | WOS:000390126600041 | |
dc.identifier.doi | 10.1016/j.physletb.2016.10.054 | |
dc.subject.keywords | CMS | |
dc.subject.keywords | Physics | |
dc.subject.keywords | Electroweak | |
dc.contributor.authorMale | 1 |
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