Artículo

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

Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; Otero y Garzon, Gustavo JavierIcon ; Piegaia, Ricardo NestorIcon ; Sacerdoti, SabrinaIcon ; Reisin, Hernan DiegoIcon ; Alconada Verzini, María JosefinaIcon ; Alonso, FranciscoIcon ; Anduaga, Xabier SebastianIcon ; Arduh, Francisco AnuarIcon ; Dova, Maria TeresaIcon ; Monticelli, Fernando GabrielIcon ; Wahlberg, Hernan PabloIcon ; Zhukov, K.; Zibell, A.; Zieminska, D.; Zimine, N. I.; Zimmermann, C.; Zimmermann, R.; Zimmermann, S.; Zimmermann, S.; Ziolkowski, M.; Zobernig, G.; Zoccoli, A.; Nedden, M. zur; Zurzolo, G.; Zutshi, V.; Zwalinski, L.; The ATLAS Collaboration
Fecha de publicación: 12/2014
Editorial: Springer
Revista: European Physical Journal C: Particles and Fields
ISSN: 1434-6044
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:

Resumen

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.
Palabras clave: ATLAS , CERN
 
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info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/106381
URL: https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-014-3134-6
DOI: http://dx.doi.org/10.1140/epjc/s10052-014-3134-6
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Citación
Aad, G.; Abbott, B.; Abdallah, J.; Abdel Khalek, S.; Abdinov, O.; et al.; Search for contact interactions and large extra dimensions in the dilepton channel using proton–proton collisions at √s = 8 TeV with the ATLAS detector; Springer; European Physical Journal C: Particles and Fields; 74; 3134; 12-2014; 1-25
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