dc.contributor.author | Sirunyan, A. M. | |
dc.contributor.author | Tumasyan, A. | |
dc.contributor.author | Adam, W. | |
dc.contributor.author | Ambrogi, F. | |
dc.contributor.author | Asilar, E. | |
dc.contributor.author | Bergauer, T. | |
dc.contributor.author | Özdemir, Kadri | |
dc.contributor.author | CMS Collaboration | |
dc.date.accessioned | 2021-06-05T19:59:52Z | |
dc.date.available | 2021-06-05T19:59:52Z | |
dc.date.issued | 2018 | |
dc.identifier.issn | 1029-8479 | |
dc.identifier.uri | https://doi.org/10.1007/JHEP07(2018)153 | |
dc.identifier.uri | https://hdl.handle.net/20.500.12960/762 | |
dc.description | WOS:000440090400002 | en_US |
dc.description.abstract | The process pp -> pl(+)l(-)p(()*()), with l(+)l(-) 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 root s = 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 mu(+)/mu(-) and 8 e(+)e(-) pairs with m(l(+)l(-)) > 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 gamma gamma collisions at the electroweak scale. This measurement also demonstrates that CT-PPS performs according to the design specifications. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Springer | en_US |
dc.relation.ispartof | Journal on High Energy Physics | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Forward Physics | en_US |
dc.subject | Hadron-Hadron Scattering (Experiments) | en_US |
dc.subject | Photon Production | en_US |
dc.subject | Proton-Proton Scattering | en_US |
dc.title | 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 | en_US |
dc.type | article | en_US |
dc.authorid | 0000-0002-0103-1488 | |
dc.department | Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümü | en_US |
dc.contributor.institutionauthor | Özdemir, Kadri | |
dc.identifier.doi | 10.1007/JHEP07(2018)153 | |
dc.identifier.issue | 7 | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |