par Aktas, Adil;Collard, Caroline 
;Favart, Laurent ;Janssen, Xavier ;Marage, Pierre ; [et al.]
Référence European Physical Journal C. Particles and Fields, 37, 2, page (141-159)
Publication Publié, 2004
;Favart, Laurent ;Janssen, Xavier ;Marage, Pierre ; [et al.]Référence European Physical Journal C. Particles and Fields, 37, 2, page (141-159)
Publication Publié, 2004
Article révisé par les pairs
| Résumé : | Triple differential dijet cross sections in e ±p interactions are presented in the region of photon virtualities 2 < Q 2 < 80GeV 2, inelasticities 0.1 < y < 0.85, jet transverse energies E T 1* > 7GeV, E T 2* > 5GeV, and pseudorapidities -2.5 < η 1*, η 2* < 0. The measurements are made in the γ* 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. © Springer-Verlag / Società Italiana di Fisica 2004. |
