Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at √s=8 TeV with the ATLAS detector

, The ATLAS collaboration (2014) Search for contact interactions and large extra dimensions in the dilepton channel using proton-proton collisions at √s=8 TeV with the ATLAS detector. European Physical Journal C: Particles and Fields, 74 (12). ISSN 1434-6044

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Abstract

A search is conducted for non-resonant new phenomena in dielectron and dimuon final states, originating from either contact interactions or large extra spatial dimensions. The LHC 2012 proton-proton collision dataset recorded by the ATLAS detector is used, corresponding to 20 fb−1 at √s=8 TeV. The dilepton invariant mass spectrum is a discriminating variable in both searches, with the contact interaction search additionally utilizing the dilepton forward-backward asymmetry. No significant deviations from the Standard Model expectation are observed. Lower limits are set on the ℓℓqq contact interaction scale Λ between 15.4 TeV and 26.3 TeV, at the 95% credibility level. For large extra spatial dimensions, lower limits are set on the string scale MS between 3.2 TeV to 5.0 TeV.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
80888
Deposited By:
Deposited On:
12 Aug 2016 15:34
Refereed?:
Yes
Published?:
Published
Last Modified:
22 Nov 2021 09:32