Measurement of Dijet Angular Distributions and Search for Quark Compositeness in Pp Collisions at ?s=77tev
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Karapınar, Güler
Demir, Durmuş Ali
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HYBRID
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Yes
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Abstract
Dijet angular distributions are measured over a wide range of dijet invariant masses in pp collisions at √s=7TeV, at the CERN LHC. The event sample, recorded with the CMS detector, corresponds to an integrated luminosity of 36pb-1. The data are found to be in good agreement with the predictions of perturbative QCD, and yield no evidence of quark compositeness. With a modified frequentist approach, a lower limit on the contact interaction scale for left-handed quarks of Λ+=5.6TeV (Λ -=6.7TeV) for destructive (constructive) interference is obtained at the 95% confidence level. © 2011 American Physical Society.
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Keywords
Tellurium compounds, Angular distribution, Elementary particles, Proton proton collisions, Quark, 550, limit, PARTICLE PHYSICS; LARGE HADRON COLLIDER; CMS, High Energy Physics - Experiment, Subatomär fysik, COLLIDER, High Energy Physics - Experiment (hep-ex), HEP; CMS; LHC; HADRON-HADRON SCATTERING, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], angular distribution, info:eu-repo/classification/ddc/530, Fisica delle particelle, [Anahtar Kelime Yok], CMS, Physics, ddc:530, contact interaction, 001, quark left-handed | quantum chromodynamic, CERN LHC Coll, Quark, Physique des particules élémentaires, PARTICLE PHYSICS, LHC; CMS; physics; jets; beyond standard model, LHC, Angular distribution, physics, beyond standard model, jets, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, 530, LIMIT, PHYSICS, Tellurium compounds, Physics and Astronomy (all), Dijet distribution; quark; pp collision, DETECTOR, perturbation theory, Proton proton collisions, detector, 500, Elementary particles, Física, Detector, LARGE HADRON COLLIDER, COLLIDER; DETECTOR; PHYSICS; LIMIT, Jet pair production, collider, Limit, Collider
Fields of Science
01 natural sciences, 0103 physical sciences
Citation
Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Bergauer, T., Dragicevic, M., Erö, J., ...CMS Collaboration (2011). Measurement of dijet angular distributions and search for quark compositeness in pp collisions at √s=7TeV. Physical Review Letters, 106(20). doi:10.1103/PhysRevLett.106.201804
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106
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20
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