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Article: Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector
Title | Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector |
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Authors | |
Keywords | Hadron-Hadron scattering (experiments) |
Issue Date | 2020 |
Publisher | Springer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130 |
Citation | Journal of High Energy Physics, 2020, v. 2020, p. article no. 5 How to Cite? |
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 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. |
Persistent Identifier | http://hdl.handle.net/10722/294655 |
ISSN | 2023 Impact Factor: 5.0 2023 SCImago Journal Rankings: 0.832 |
ISI Accession Number ID | |
Errata |
DC Field | Value | Language |
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dc.contributor.author | Lo, CY | - |
dc.contributor.author | Paredes Hernandez, D | - |
dc.contributor.author | Salvucci, A | - |
dc.contributor.author | TAM, KC | - |
dc.contributor.author | Tu, Y | - |
dc.contributor.author | The ATLAS collaboration | - |
dc.contributor.author | Pizzimento, L | - |
dc.date.accessioned | 2020-12-08T07:40:02Z | - |
dc.date.available | 2020-12-08T07:40:02Z | - |
dc.date.issued | 2020 | - |
dc.identifier.citation | Journal of High Energy Physics, 2020, v. 2020, p. article no. 5 | - |
dc.identifier.issn | 1029-8479 | - |
dc.identifier.uri | http://hdl.handle.net/10722/294655 | - |
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 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. | - |
dc.language | eng | - |
dc.publisher | Springer Verlag: SCOAP3. The Journal's web site is located at http://www.springer.com/physics/particle+and+nuclear+physics/journal/13130 | - |
dc.relation.ispartof | Journal of High Energy Physics | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Hadron-Hadron scattering (experiments) | - |
dc.title | Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector | - |
dc.type | Article | - |
dc.identifier.email | Paredes Hernandez, D: dparedes@hku.hk | - |
dc.identifier.email | Tu, Y: yanjuntu@hku.hk | - |
dc.identifier.authority | Tu, Y=rp01971 | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1007/JHEP11(2020)005 | - |
dc.identifier.scopus | eid_2-s2.0-85095686181 | - |
dc.identifier.hkuros | 320348 | - |
dc.identifier.volume | 2020 | - |
dc.identifier.issue | 11 | - |
dc.identifier.spage | article no. 5 | - |
dc.identifier.epage | article no. 5 | - |
dc.identifier.isi | WOS:000587301500001 | - |
dc.publisher.place | Germany | - |
dc.relation.erratum | doi:10.1007/JHEP04(2021)142 | - |