Four-Jet Production at the Large Hadron Collider at Next-to-Leading Order in QCD

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Four-Jet Production at the Large Hadron Collider at Next-to-Leading Order in QCD

Z. Bern, G. Diana, L. J. Dixon, F. Febres Cordero, S. Höche, D. A. Kosower, H. Ita, D. Maître, and K. Ozeren

Phys. Rev. Lett. 109, 042001 – Published 24 July 2012

Abstract

We present the cross sections for production of up to four jets at the Large Hadron Collider, at next-to-leading order in the QCD coupling. We use the BlackHat library in conjunction with SHERPA and a recently developed algorithm for assembling primitive amplitudes into color-dressed amplitudes. We adopt the cuts used by ATLAS in their study of multijet events in $p p$ collisions at $\sqrt{s} = 7 TeV$ . We include estimates of nonperturbative corrections and compare to ATLAS data. We store intermediate results in a framework that allows the inexpensive computation of additional results for different choices of scale or parton distributions.

Received 31 December 2011

DOI:https://doi.org/10.1103/PhysRevLett.109.042001

Authors & Affiliations

Z. Bern¹, G. Diana², L. J. Dixon³, F. Febres Cordero⁴, S. Höche³, D. A. Kosower², H. Ita^1,5, D. Maître^6,7, and K. Ozeren¹

¹Department of Physics and Astronomy, UCLA, Los Angeles, California 90095-1547, USA
²Institut de Physique Théorique, CEA-Saclay, F-91191 Gif-sur-Yvette cedex, France
³SLAC National Accelerator Laboratory, Stanford University, Stanford, California 94309, USA
⁴Departamento de Física, Universidad Simón Bolívar, Caracas 1080A, Venezuela
⁵Niels Bohr International Academy and Discovery Center, NBI, DK-2100 Copenhagen, Denmark
⁶Department of Physics, University of Durham, Durham DH1 3LE, United Kingdom
⁷PH Department, TH Unit, CERN, CH-1211 Geneva 23, Switzerland