Search for high-mass dilepton resonances in pp collisions at s√=8  TeV with the ATLAS detector

Cerri, A, Chavez Barajas, C, De Santo, A, Grout, Z J, Potter, C T, Salvatore, F, Santoyo Castillo, I, Sutton, M, Vivarelli, I and others (ATLAS collaboration), (2014) Search for high-mass dilepton resonances in pp collisions at s√=8  TeV with the ATLAS detector. Physical Review D, 90 (5). 052005. ISSN 1550-2368

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The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to dielectron or dimuon final states. Results are presented from an analysis of proton-proton (pp) collisions at a center-of-mass energy of 8 TeV corresponding to an integrated luminosity of 20.3  fb−1 in the dimuon channel. A narrow resonance with Standard Model Z couplings to fermions is excluded at 95% confidence level for masses less than 2.79 TeV in the dielectron channel, 2.53 TeV in the dimuon channel, and 2.90 TeV in the two channels combined. Limits on other model interpretations are also presented, including a grand-unification model based on the E6 gauge group, Z∗ bosons, minimal Z' models, a spin-2 graviton excitation from Randall-Sundrum models, quantum black holes, and a minimal walking technicolor model with a composite Higgs boson.

Item Type: Article
Additional Information: Part of the ATLAS Collaboration
Schools and Departments: School of Mathematical and Physical Sciences > Physics and Astronomy
Subjects: Q Science > QC Physics
Q Science > QC Physics > QC0170 Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics
Depositing User: Samuel Appleton
Date Deposited: 17 Jul 2015 11:44
Last Modified: 07 Mar 2017 11:38

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