Search for quantum black hole production in high-invariant-mass lepton + jet final states using pp collisions at √s = 8 TeV and the ATLAS detector

This Letter presents a search for quantumblack-hole production using 20:3 fb -1 of data collected with the ATLAS detector in pp collisions at the LHC at √s = 8 TeV. The quantum black holes are assumed to decay into a final state characterized by a lepton (electron or muon) and a jet. In either chann...

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Guardado en:
Detalles Bibliográficos
Autor principal: Aad, G.
Formato: JOUR
Materias:
Elementary particles
Gravitation
Stars
Tellurium compounds
ATLAS detectors
Black holes
Branching fractions
Confidence levels
Final state
Invariant mass
Search region
Upper limits
Quantum theory
article
electron
elementary particle
meson
quantum theory
theoretical model
Electrons
Elementary Particles
Mesons
Models, Theoretical
Quantum Theory
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00319007_v112_n9_p_Aad
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:This Letter presents a search for quantumblack-hole production using 20:3 fb -1 of data collected with the ATLAS detector in pp collisions at the LHC at √s = 8 TeV. The quantum black holes are assumed to decay into a final state characterized by a lepton (electron or muon) and a jet. In either channel, no event with a lepton-jet invariant mass of 3.5 TeVor more is observed, consistent with the expected background. Limits are set on the product of cross sections and branching fractions for the lepton + jet final states of quantum black holes produced in a search region for invariant masses above 1 TeV. The combined 95% confidence level upper limit on this product for quantum black holes with threshold mass above 3.5 TeVis 0.18 fb. This limit constrains the threshold quantum black-hole mass to be above 5.3 TeV in the model considered. © 2014 CERN, for the ATLAS Collaboration.

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