Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector
| dc.WoS.categories | Physics, Particles & Fields | en_US |
| dc.authorid | 0000-0001-5050-8441 | en_US |
| dc.contributor.author | Çetin, Serkant Ali | |
| dc.date.accessioned | 2020-12-03T07:28:50Z | |
| dc.date.available | 2020-12-03T07:28:50Z | |
| dc.date.issued | 2020-11-04 | |
| dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
| dc.description | 41 pages | en_US |
| dc.description.abstract | A search for new physics with non-resonant signals in dielectron and dimuon final states in the mass range above 2 TeV is presented. This is the first search for non-resonant signals in dilepton final states at the LHC to use a background estimate from the data. The data, corresponding to an integrated luminosity of 139 fb(-1), were recorded by the ATLAS experiment in proton-proton collisions at a center-of-mass energy of root s= 13 TeV during Run 2 of the Large Hadron Collider. The benchmark signal signature is a two-quark and two-lepton contact interaction, which would enhance the dilepton event rate at the TeV mass scale. To model the contribution from background processes a functional form is fit to the dilepton invariant-mass spectra in data in a mass region below the region of interest. It is then extrapolated to a high-mass signal region to obtain the expected background there. No significant deviation from the expected background is observed in the data. Upper limits at 95% CL on the number of events and the visible cross-section times branching fraction for processes involving new physics are provided. Observed (expected) 95% CL lower limits on the contact interaction energy scale reach 35.8 (37.6) TeV. | en_US |
| dc.fullTextLevel | Full Text | en_US |
| dc.identifier.doi | 10.1007/JHEP11(2020)005 | en_US |
| dc.identifier.issn | 1029-8479 | |
| dc.identifier.scopus | 2-s2.0-85095686181 | en_US |
| dc.identifier.uri | https://hdl.handle.net/11411/2764 | |
| dc.identifier.uri | https://doi.org/10.1007/JHEP11(2020)005 | |
| dc.identifier.wos | WOS:000587301500001 | en_US |
| dc.identifier.wosquality | Q1 | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.issue | 11 | en_US |
| dc.language.iso | en | en_US |
| dc.national | International | en_US |
| dc.numberofauthors | 1000+ | en_US |
| dc.publisher | Springer | en_US |
| dc.relation.ispartof | Journal of High Energy Physics | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.subject | Hadron-Hadron scattering (experiments) | en_US |
| dc.title | Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector | en_US |
| dc.type | Article | en_US |
