2017/03/27 by M. Aaboud, ATLAS Collaboration, G. Aad +98 · 1 citation
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #hep-ex
paper · pdf · doi:10.1103/physrevd.96.052004
published as Phys. Rev. D 96, 052004 (2017) · 42 pages in total, author list starting page 26, 6 figures, 2 tables. Submitted to PRD. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2016-21/
arxiv created 2017/03/27 · openalex created_date 2017/04/07 · openalex publication_date 2017/09/28 · arxiv updated 2017/10/04 · openalex updated_date 2026/08/05
Dijet events are studied in the proton--proton collision dataset recorded at √(s)=13 TeV with the ATLAS detector at the Large Hadron Collider in 2015 and 2016, corresponding to integrated luminosities of 3.5 fb-1 and 33.5 fb-1 respectively. Invariant mass and angular distributions are compared to background predictions and no significant deviation is observed. For resonance searches, a new method for fitting the background component of the invariant mass distribution is employed. The dataset is then used to set upper limits at a 95% confidence level on a range of new physics scenarios. Excited quarks with masses below 6.0 TeV are excluded, and limits are set on quantum black holes, heavy W' bosons, W* bosons, and a range of masses and couplings in a Z' dark matter mediator model. Model-independent limits on signals with a Gaussian shape are also set, using a new approach allowing factorization of physics and detector effects. From the angular distributions, a scale of new physics in contact interaction models is excluded for scenarios with either constructive or destructive interference. These results represent a substantial improvement over those obtained previously with lower integrated luminosity.