Measurement of Dijet Angular Distributions at sq root(s)=1.96 TeV and Searches for Quark Compositeness and Extra Spatial Dimensions

Journal Article · Fri Nov 06 00:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.103.191803· OSTI ID:21370805

Abazov, V M; Alexeev, G D; Kharzheev, Y N; Malyshev, V L; Tokmenin, V V; Vertogradov, L S; Yatsunenko, Y A ^[1]; Abbott, B; Gutierrez, P; Hossain, S; Jain, S; Rominsky, M; Severini, H; Skubic, P; Strauss, M ^[2]; Abolins, M; Benitez, J A; Brock, R; Edmunds, D; Hall, I ^[3]

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1. Joint Institute for Nuclear Research, Dubna (Russian Federation)
2. University of Oklahoma, Norman, Oklahoma 73019 (United States)
3. Michigan State University, East Lansing, Michigan 48824 (United States)

We present the first measurement of dijet angular distributions in pp collisions at sq root(s)=1.96 TeV at the Fermilab Tevatron Collider. The measurement is based on a dataset corresponding to an integrated luminosity of 0.7 fb{sup -1} collected with the D0 detector. Dijet angular distributions have been measured over a range of dijet masses, from 0.25 TeV to above 1.1 TeV. The data are in good agreement with the predictions of perturbative QCD and are used to constrain new physics models including quark compositeness, large extra dimensions, and TeV{sup -1} scale extra dimensions. For all models considered, we set the most stringent direct limits to date.

• OSTI ID: 21370805
• Journal Information: Physical Review Letters, Vol. 103, Issue 19; Other Information: DOI: 10.1103/PhysRevLett.103.191803; (c) 2009 The American Physical Society; ISSN 0031-9007
• Country of Publication: United States
• Language: English

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QUARKS
TEV RANGE 01-10
ACCELERATORS
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CYCLIC ACCELERATORS
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