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Search for quark contact interactions in dijet angular distributions in pp collisions at root s=7 TeV measured with the ATLAS detector
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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2011 (English)In: Physics Letters B, ISSN 0370-2693, E-ISSN 1873-2445, Vol. 694, no 4-5, 327-345 p.Article in journal (Refereed) Published
Abstract [en]

Dijet angular distributions from the first LHC pp collisions at center-of-mass energy root s = 7 TeV have been measured with the ATLAS detector. The dataset used for this analysis represents an integrated luminosity of 3.1 pb(-1). Dijet chi distributions and centrality ratios have been measured up to dijet masses of 2.8 TeV, and found to be in good agreement with Standard Model predictions. Analysis of the chi distributions excludes quark contact interactions with a compositeness scale Lambda below 3.4 TeV, at 95% confidence level, significantly exceeding previous limits.

Place, publisher, year, edition, pages
2011. Vol. 694, no 4-5, 327-345 p.
Keyword [en]
ATLAS, LHC, 7 TeV, Dijets angular distributions, Quark compositeness, Contact interactions
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-147862DOI: 10.1016/j.physletb.2010.10.021ISI: 000286494700009OAI: oai:DiVA.org:uu-147862DiVA: diva2:400997
Note

ATLAS Collaboration, for complete list of authors see http://dx.doi.org/10.1016/j.physletb.2010.10.021

Available from: 2011-03-01 Created: 2011-03-01 Last updated: 2017-12-11Bibliographically approved

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