ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at √s = 7 TeV

The ATLAS collaboration, V. Büscher, F. Crescioli, S. Haas, B. Mindur, A. A. Nepomuceno

Research output: Contribution to journalArticle

Abstract

Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy √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 ~ 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.

Original languageEnglish (US)
Article number029
JournalJournal of High Energy Physics
Volume2013
DOIs
StatePublished - 2013

Fingerprint

mass distribution
angular distribution
collisions
quarks
protons
octets
exclusion
mass spectra
center of mass
electric contacts
strings
bosons
quantum chromodynamics
luminosity
gravitation
scalars
interference
color
energy
detectors

Keywords

  • Hadron-Hadron scattering

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

The ATLAS collaboration, Büscher, V., Crescioli, F., Haas, S., Mindur, B., & Nepomuceno, A. A. (2013). ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at √s = 7 TeV. Journal of High Energy Physics, 2013, [029]. https://doi.org/10.1007/JHEP01(2013)029

ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at √s = 7 TeV. / The ATLAS collaboration; Büscher, V.; Crescioli, F.; Haas, S.; Mindur, B.; Nepomuceno, A. A.

In: Journal of High Energy Physics, Vol. 2013, 029, 2013.

Research output: Contribution to journalArticle

The ATLAS collaboration ; Büscher, V. ; Crescioli, F. ; Haas, S. ; Mindur, B. ; Nepomuceno, A. A. / ATLAS search for new phenomena in dijet mass and angular distributions using pp collisions at √s = 7 TeV. In: Journal of High Energy Physics. 2013 ; Vol. 2013.
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AU - Ahlen, S. P.

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AU - Aielli, G.

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AU - Alexander, G.

AU - Alexandre, G.

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AU - Büscher, V.

AU - Crescioli, F.

AU - Haas, S.

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AU - Nepomuceno, A. A.

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N2 - Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy √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 ~ 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.

AB - Mass and angular distributions of dijets produced in LHC proton-proton collisions at a centre-of-mass energy √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 ~ 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.

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