Measurement of the combined rapidity and p(T) dependence of dijet azimuthal decorrelations in p(p)over-bar collisions at root s=1.96 TeV
2013 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 721, no 4-5, 212-219 p.Article in journal (Refereed) Published
We present the first combined measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations, using the recently proposed quantity R-Delta phi. The variable R-Delta phi measures the fraction of the inclusive dijet events in which the azimuthal separation of the two jets with the highest transverse momenta is less than a specified value of the parameter Delta phi(max). The quantity R-Delta phi is measured in p (p) over bar collisions at root s = 1.96 TeV, as a function of the dijet rapidity interval, the total scalar transverse momentum, and Delta phi(max). The measurement uses an event sample corresponding to an integrated luminosity of 0.7 fb(-1) collected with the DO detector at the Fermilab Tevatron Collider. The results are compared to predictions of a perturbative QCD calculation at next-to-leading order in the strong coupling with corrections for non-perturbative effects. The theory predictions describe the data well, except in the kinematic region of large dijet rapidity intervals and small Delta phi(max).
Place, publisher, year, edition, pages
2013. Vol. 721, no 4-5, 212-219 p.
IdentifiersURN: urn:nbn:se:uu:diva-200684DOI: 10.1016/j.physletb.2013.03.029ISI: 000318055900003OAI: oai:DiVA.org:uu-200684DiVA: diva2:624766