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Combination of searches for heavy resonances decaying into bosonic and leptonic final states using 36 fb -1 of proton-proton collision data at vs =13 TeV with the ATLAS detector
journal contribution
posted on 2023-06-09, 15:52 authored by N L Abraham, Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Samuel Jones, G Lerner, F Miano, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, Kate ShawKate Shaw, Thomas StevensonThomas Stevenson, K Suruliz, Mark SuttonMark Sutton, F Tresoldi, Fabrizio Trovato, Iacopo Vivarelli, E Winkels, O J Winston, The ATLAS Collaboration, othersSearches for new heavy resonances decaying into different pairings of W, Z, or Higgs bosons, as well as directly into leptons, are presented using a data sample corresponding to 36.1fb -1 of pp collisions at vs = 13 TeV collected during 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Analyses selecting bosonic decay modes in the qqqq,??qq,l?qq, llqq,l?l?,ll??,l?ll,llll,qqbb,??bb,l?bb,and llbb final states are combined, searching for a narrow-width resonance. Likewise, analyses selecting the leptonic l? and ll final states are also combined. These two sets of analyses are then further combined. No significant deviation from the Standard Model predictions is observed. Three benchmark models are tested: a model predicting the existence of a new heavy scalar singlet, a simplified model predicting a heavy vector-boson triplet, and a bulk Randall-Sundrum model with a heavy spin-2 Kaluza-Klein excitation of the graviton. Cross-section limits are set at the 95% confidence level using an asymptotic approximation and are compared with predictions for the benchmark models. These limits are also expressed in terms of constraints on couplings of the heavy vector-boson triplet to quarks, leptons, and the Higgs boson. The data exclude a heavy vector-boson triplet with mass below 5.5 TeV in a weakly coupled scenario and 4.5 TeV in a strongly coupled scenario, as well as a Kaluza-Klein graviton with mass below 2.3 TeV.
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Publication status
- Published
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- Published version
Journal
Physical Review DISSN
2470-0010Publisher
American Physical SocietyExternal DOI
Issue
5Volume
98Page range
052008 1-32Department affiliated with
- Physics and Astronomy Publications
Research groups affiliated with
- Experimental Particle Physics Research Group Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2018-11-19First Open Access (FOA) Date
2018-11-19First Compliant Deposit (FCD) Date
2018-11-12Usage metrics
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