Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s √(s) = 8 TeV

2014/05/31 by ATLAS Collaboration, G. Aad, B. Abbott +97 · 25 citations
Physics and Astronomy · #Atlas (anatomy) #Atlas detector #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #Electron #Extra dimensions #Large Hadron Collider #Large extra dimension #Lepton #Muon #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Physics #Standard Model (mathematical formulation) #hep-ex

paper · pdf · doi:10.1007/jhep08(2014)103

published in Journal of High Energy Physics 2014(8) (Springer Nature) · Comments: 35 pages plus author list (58 pages total), 11 figures, 8 tables, submitted to JHEP, All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2013-05/

openalex publication_date 2014/08/01 · arxiv created 2014/09/08 · arxiv updated 2014/09/09 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb -1 of proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a centre-of-mass energy of s = 8 TeV. No excess of events beyond Standard Model expectations is observed. Using extra-dimensional models for black hole and string ball production and decay, exclusion contours are determined as a function of the mass threshold for production and the fundamental gravity scale for two, four and six extra dimensions. For six extra dimensions, mass thresholds of 4.8-6.2 TeV are excluded at 95% confidence level, depending on the fundamental gravity scale and model assumptions. Upper limits on the fiducial cross-sections for non-Standard Model production of these final states are set.

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