Search for contact interactions in dilepton events from pp collisions at √(s)=7 TeV with the ATLAS detector
Creators
- 1. Fakultät für Mathematik und Physik, Albert-Ludwigs-Universität, Freiburg i.Br. (Germany)
- 2. Homer L. Dodge Department of Physics and Astronomy, University of Oklahoma, Norman, OK (United States)
- 3. Institut de Física d'Altes Energies and Departament de Física de la Universitat Autònoma de Barcelona and ICREA, Barcelona (Spain)
- 4. Section de Physique, Université de Genève, Geneva (Switzerland)
- 5. Department of Physics, Oxford University, Oxford (United Kingdom)
- 6. Institute of Physics, Azerbaijan Academy of Sciences, Baku (Azerbaijan)
- 7. Department of Physics, Oklahoma State University, Stillwater, OK (United States)
- 8. Department of Physics and Astronomy, Michigan State University, East Lansing, MI (United States)
- 9. Department of Physics, University of Toronto, Toronto, ON (Canada)
- 10. Raymond and Beverly Sackler School of Physics and Astronomy, Tel Aviv University, Tel Aviv (Israel)
- 11. LAL, Univ. Paris-Sud and CNRS/IN2P3, Orsay (France)
- 12. Dipartimento di Fisica, Università di Milano, Milano (Italy)
- 13. INFN Sezione di Milano (Italy)
- 14. ICTP, Trieste (Italy)
- 15. INFN Gruppo Collegato di Udine (Italy)
- 16. AGH University of Science and Technology, Faculty of Physics and Applied Computer Science, Krakow (Poland)
- 17. Physics Department, Brookhaven National Laboratory, Upton, NY (United States)
- 18. Department of Physics, Hampton University, Hampton, VA (United States)
- 19. Department of Physics, Yale University, New Haven, CT (United States)
Description
This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at √(s)=7 TeV and recorded by the ATLAS detector. The data sample, collected in 2011, corresponds to an integrated luminosity of 1.08 and 1.21 fb-1 in the e+e- and μ+μ- channels, respectively. No significant deviations from the standard model are observed. Using a Bayesian approach with a prior flat in 1/Λ2, the following 95% CL lower limits are placed on the energy scale of ℓℓqq contact interactions: Λ->10.1 TeV (Λ+>9.4 TeV) in the electron channel and Λ->8.0 TeV (Λ+>7.0 TeV) in the muon channel for constructive (destructive) interference in the left-left isoscalar contact interaction model. Limits are also provided for a prior flat in 1/Λ4.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2012.04.026Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2012.04.026;
- arXiv
- arXiv:1112.4462v3;
- PII
- S0370-2693(12)00429-7;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 712
- Journal Issue
- 1-2
- Journal Page Range
- p. 40-58
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Syrian Arab Republic
- INIS RN
- 44016009
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS;
- Descriptors DEI
- CERN LHC; ELECTRONS; INTERFERENCE; LUMINOSITY; MUONS; POSITRONS; PROTON-PROTON INTERACTIONS; STANDARD MODEL; TEV RANGE 01-10
- Descriptors DEC
- ACCELERATORS; ANTILEPTONS; ANTIMATTER; ANTIPARTICLES; BARYON-BARYON INTERACTIONS; CYCLIC ACCELERATORS; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; GRAND UNIFIED THEORY; HADRON-HADRON INTERACTIONS; INTERACTIONS; LEPTONS; MATHEMATICAL MODELS; MATTER; NUCLEON-NUCLEON INTERACTIONS; OPTICAL PROPERTIES; PARTICLE INTERACTIONS; PARTICLE MODELS; PHYSICAL PROPERTIES; PROTON-NUCLEON INTERACTIONS; QUANTUM FIELD THEORY; STORAGE RINGS; SYNCHROTRONS; TEV RANGE; UNIFIED GAUGE MODELS
Optional Information
- Copyright
- Copyright (c) 2012 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.