2004/01/12 by H1 Collaboration, D. V. Kiptily, Maxim V. Polyakov · 2 citations
Mathematics · Physics and Astronomy · #Bar (unit) #Geometry #High-Energy Particle Collisions Research #Instanton #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #Quark #Twist #hep-ex
paper · pdf · doi:10.1140/epjc/s2004-01957-3
published as Eur.Phys.J.C37:141-159,2004 · 32 pages, 8 figures, 5 tables
arxiv created 2004/01/12 · openalex publication_date 2004/08/05 · arxiv updated 2012/08/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Triple differential dijet cross sections in e^± p interactions are presented in the region of photon virtualities 2<Q2<80GeV2, inelasticities 0.1<y<0.85, jet transverse energies ET1>7GeV, ET2>5GeV, and pseudorapidities -2.5 < eta1^*, eta2^* <0. The measurements are made in the gamma^* p centre-of-mass frame, using an integrated luminosity of 57pb-1. The data are compared with NLO QCD calculations and LO Monte Carlo programs with and without a resolved virtual photon contribution. NLO QCD calculations fail to describe the region of low Q2 and low jet transverse energies, in contrast to a LO Monte Carlo generator which includes direct and resolved photon interactions with both transversely and longitudinally polarised photons. Initial and final state parton showers are tested as a mechanism for including higher order QCD effects in low ET jet production.