Measurement of angular correlations of jets at √s=1.96 TeV and determination of the strong coupling at high momentum transfers

0386652 - FZÚ 2013 RIV NL eng J - Journal Article
Abazov, V. M. - Abbott, B. - Acharya, B.S. - Kupčo, Alexander - Lokajíček, Miloš … Total 391 authors
Measurement of angular correlations of jets at √s=1.96 TeV and determination of the strong coupling at high momentum transfers.
Physics Letters. B. Roč. 718, č. 1 (2012), s. 56-63. ISSN 0370-2693. E-ISSN 1873-2445
R&D Projects: GA MŠMT(CZ) LG12006; GA MŠMT LA08047
Institutional research plan: CEZ:AV0Z10100502
Keywords : D0 * Tevatron * hadron colliders * jets
Subject RIV: BF - Elementary Particles and High Energy Physics
Impact factor: 4.569, year: 2012
http://www.sciencedirect.com/science/article/pii/S0370269312010453

We present a measurement of the average value of a new observable at hadron colliders that is sensitive to QCD dynamics and to the strong coupling constant, while being only weakly sensitive to parton distribution functions. The observable measures the angular correlations of jets and is defined as the number of neighboring jets above a given transverse momentum threshold which accompany a given jet within a given distance ΔR in the plane of rapidity and azimuthal angle. The ensemble average over all jets in an inclusive jet sample is measured and the results are presented as a function of transverse momentum of the inclusive jets, in different regions of ΔR and for different transverse momentum requirements for the neighboring jets. The measurement is based on a data set corresponding to an integrated luminosity of 0.7 fb−1 collected with the D0 detector at the Fermilab Tevatron Collider in View the MathML source collisions at View the MathML source.
Permanent Link: http://hdl.handle.net/11104/0215937