Three- and four-jet final states in photoproduction at HERA
| dc.creator | ZEUS Collaboration | |
| dc.creator | Chekanov, S. | |
| dc.date | 2007-07-25 | |
| dc.date.accessioned | 2026-07-07T10:56:54Z | |
| dc.date.available | 2026-07-07T10:56:54Z | |
| dc.description | Three- and four-jet final states have been measured in photoproduction at HERA using the ZEUS detector with an integrated luminosity of 121 pb^-1. The results are presented for jets with transverse energy E_T^jet>6 GeV and pseudorapidity |eta^jet|<2.4, in the kinematic region given by the virtuality of the photon Q^2<1 GeV^2 and the inelasticity 0.2<y<0.85 and in two mass regions defined as 25<M_nj<50 GeV and M_nj>50 GeV, where M_nj is the invariant mass of the n-jet system. The four-jet photoproduction cross section has been measured for the first time and represents the highest-order process studied at HERA. Both the three- and four-jet cross sections have been compared with leading-logarithmic parton-shower Monte Carlo models, with and without multi-parton interactions. The three-jet cross sections have been compared to an order(alpha alpha_s^2) perturbative QCD calculation. | |
| dc.description | 50 pages, 15 figures, 22 tables, submitted to Nucl. Phys. B | |
| dc.identifier | https://arxiv.org/abs/0707.3749 | |
| dc.identifier | http://arxiv.org/abs/0707.3749 | |
| dc.identifier | Nucl.Phys.B792:1-47,2008 | |
| dc.identifier | doi:10.1016/j.nuclphysb.2007.08.021 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/186575 | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | Three- and four-jet final states in photoproduction at HERA | |
| dc.type | text |