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Search for contact interactions and large extra dimensions in dilepton events from pp collisions at √s=7  TeV with the ATLAS detector

Contributors

ATLAS Collaboration

Collaborators

Abdelalim Aly, Ahmed Aly; Alexandre, Gauthier; Backes, Moritz; Barone, Gaetano; Bell, Paul; Bell, William; Benhar Noccioli, Eleonora; Blondel, Alain; Bucci, Francesca; Clark, Allan Geoffrey; Dao, Valerio; Doglioni, Caterina; Ferrere, Didier; Gadomski, Szymon; Gonzalez Sevilla, Sergio; Goulette, Marc; Iacobucci, Giuseppe; La Rosa, Alessandro; Lister, Alison; Martin Dit Latour, Bertrand; Mermod, Philippe; Mora Herrera, Maria Clemencia Rosario; Nektarijevic, Snezana; Nikolics, Katalin; Pasztor, Arpad; Picazio, Attilio; Pohl, Martin; Rosbach, Kilian; Rosselet, Laurent; Wu, Xin

Published in

Physical review. D. Particles, fields, gravitation, and cosmology, vol. 87, no. 01, 015010

Publication date

2013

Abstract

A search for nonresonant new phenomena, originating from either contact interactions or large extra spatial dimensions, has been carried out using events with two isolated electrons or muons. These events, produced at the LHC in proton-proton collisions at √s=7  TeV, were recorded by the ATLAS detector. The data sample, collected throughout 2011, corresponds to an integrated luminosity of 4.9 and 5.0  fb−1 in the e+e− and μ+μ− channels, respectively. No significant deviations from the Standard Model expectation are observed. Using a Bayesian approach, 95% confidence level lower limits ranging from 9.0 to 13.9 TeV are placed on the energy scale of ℓℓqq contact interactions in the left-left isoscalar model. Lower limits ranging from 2.4 to 3.9 TeV are also set on the string scale in large extra dimension models. After combining these limits with results from a similar search in the diphoton channel, slightly more stringent limits are obtained.

UNIGE affiliation entities

Citation (ISO format)

ATLAS Collaboration. Search for contact interactions and large extra dimensions in dilepton events from pp collisions at √s=7  TeV with the ATLAS detector. In: Physical review. D. Particles, fields, gravitation, and cosmology, 2013, vol. 87, n° 01, p. 015010. doi: 10.1103/PhysRevD.87.015010

Main files (1)

Article (Published version)

Identifiers

Additional URL for this publication

http://journals.aps.org/prd/abstract/10.1103/PhysRevD.87.015010

Journal ISSN

1550-2368
701views
475downloads

Technical informations

Creation

08/09/2014 13:29:00

First validation

08/09/2014 13:29:00

Update

13/10/2025 22:25:15

Status update

14/03/2023 21:44:39

Last indexation

10/11/2026 17:07:58
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