TY - JOUR
T1 - Measurement of dijet production at low Q² at HERA
AU - Aktas, A
AU - Coppens, Yves
AU - Dowell, John
AU - Faulkner, Peter
AU - Fleming, Yves
AU - Garvey, John
AU - Henshaw, Oliver
AU - Johnson, Carrie
AU - Kenyon, Ian
AU - Newman, Paul
AU - Rizvi, Syed
AU - Thompson, Paul
AU - Woehrling, Ethan-Etienne
PY - 2004/9/1
Y1 - 2004/9/1
N2 - Triple differential dijet cross sections in e(+/-)p interactions are presented in the region of photon virtualities 2 <Q(2) <80 GeV2, inelasticities 0.1 7GeV, E*(T2) > 5 GeV, and pseudorapidities - 2.5 <η(1)*, η(2)* <0. The measurements are made in the gamma*p centre-of-mass frame, using an integrated luminosity of 57 pb(-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 Q(2) 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 E-T jet production.
AB - Triple differential dijet cross sections in e(+/-)p interactions are presented in the region of photon virtualities 2 <Q(2) <80 GeV2, inelasticities 0.1 7GeV, E*(T2) > 5 GeV, and pseudorapidities - 2.5 <η(1)*, η(2)* <0. The measurements are made in the gamma*p centre-of-mass frame, using an integrated luminosity of 57 pb(-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 Q(2) 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 E-T jet production.
U2 - 10.1140/epjc/s2004-01989-7
DO - 10.1140/epjc/s2004-01989-7
M3 - Article
VL - 37
SP - 141
JO - European Physical Journal C
JF - European Physical Journal C
IS - 2
ER -