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ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at root s=7 TeV
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
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2013 (English)In: Journal of High Energy Physics (JHEP), ISSN 1126-6708, E-ISSN 1029-8479, no 1, 029- p.Article in journal (Refereed) Published
Abstract [en]

Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy root s = 7TeV have been studied with the ATLAS detector using the full 2011 data set with an integrated luminosity of 4.8 fb(-1). Dijet masses up to similar to 4.0TeV have been probed. No resonance-like features have been observed in the dijet mass spectrum, and all angular distributions are consistent with the predictions of QCD. Exclusion limits on six hypotheses of new phenomena have been set at 95% CL in terms of mass or energy scale, as appropriate. These hypotheses include excited quarks below 2.83 TeV, colour octet scalars below 1.86TeV, heavy W bosons below 1.68 TeV, string resonances below 3.61 TeV, quantum black holes with six extra space-time dimensions for quantum gravity scales below 4.11 TeV, and quark contact interactions below a compositeness scale of 7.6 TeV in a destructive interference scenario.

Place, publisher, year, edition, pages
2013. no 1, 029- p.
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-198125DOI: 10.1007/JHEP01(2013)029ISI: 000315583200029OAI: oai:DiVA.org:uu-198125DiVA: diva2:615271
Note

ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1007/JHEP01(2013)029

Available from: 2013-04-09 Created: 2013-04-09 Last updated: 2017-12-06Bibliographically approved

Open Access in DiVA

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