Observation of Proton-tagged, Central (Semi)Exclusive Production of High-mass Lepton Pairs in pp Collisions at 13 TeV With the CMS-TOTEM Precision Proton Spectrometer

dc.authorid249433en_US
dc.contributor.authorBilki, Burak
dc.contributor.author., ve diger
dc.date.accessioned2019-03-28T13:25:58Z
dc.date.available2019-03-28T13:25:58Z
dc.date.issued2018
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe process pp ? p?+??p(*), with ?+?? a muon or an electron pair produced at midrapidity with mass larger than 110 GeV, has been observed for the first time at the LHC in pp collisions at s?=13s=13 TeV. One of the two scattered protons is measured in the CMS-TOTEM precision proton spectrometer (CT-PPS), which operated for the first time in 2016. The second proton either remains intact or is excited and then dissociates into a low-mass state p*, which is undetected. The measurement is based on an integrated luminosity of 9.4 fb?1 collected during standard, high-luminosity LHC operation. A total of 12 ?+?? and 8 e+e? pairs with m(?+??) > 110 GeV, and matching forward proton kinematics, are observed, with expected backgrounds of 1.49 ± 0.07 (stat) ± 0.53 (syst) and 2.36 ± 0.09 (stat) ± 0.47 (syst), respectively. This corresponds to an excess of more than five standard deviations over the expected background. The present result constitutes the first observation of proton-tagged ?? collisions at the electroweak scale. This measurement also demonstrates that CT-PPS performs according to the design specifications..en_US
dc.identifier.doi10.1007/JHEP07(2018)153
dc.identifier.issn1029-8479
dc.identifier.scopus2-s2.0-85051832717en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/JHEP07(2018)153
dc.identifier.wosWOS:000440090400002en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringer Linktr_TR
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.subjectForward physicstr_TR
dc.subjectHadron-Hadron scatteringtr_TR
dc.subjectPhoton productiontr_TR
dc.subjectproton-proton scatteringtr_TR
dc.titleObservation of Proton-tagged, Central (Semi)Exclusive Production of High-mass Lepton Pairs in pp Collisions at 13 TeV With the CMS-TOTEM Precision Proton Spectrometeren_US
dc.typeArticleen_US

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