The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M(3J) > 50 GeV has been measured with the ZEUS detector at HERA. The three-jet angular distributions are inconsistent with a uniform population of the available phase space but are well described by parton shower models and O(alpha alpha(s)(2)) pQCD calculations. Comparisons with the parton shower model indicate a strong contribution from initial state radiation as well as a sensitivity to the effects of colour coherence. (C) 1998 Elsevier Science B.V. All rights reserved.

Measurement of three-jet distributions in photoproduction at HERA / J., B., S., C., M., D., D., K., S., M., B., M., J., R., R., S., R., Y., M. C., K., G., A., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., G. C., R., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 443:(1998), pp. 394-408. [10.1016/S0370-2693(98)01360-4]

Measurement of three-jet distributions in photoproduction at HERA

D'AGOSTINI, Giulio;NIGRO, Andrea;
1998

Abstract

The cross section for the photoproduction of events containing three jets with a three-jet invariant mass of M(3J) > 50 GeV has been measured with the ZEUS detector at HERA. The three-jet angular distributions are inconsistent with a uniform population of the available phase space but are well described by parton shower models and O(alpha alpha(s)(2)) pQCD calculations. Comparisons with the parton shower model indicate a strong contribution from initial state radiation as well as a sensitivity to the effects of colour coherence. (C) 1998 Elsevier Science B.V. All rights reserved.
1998
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of three-jet distributions in photoproduction at HERA / J., B., S., C., M., D., D., K., S., M., B., M., J., R., R., S., R., Y., M. C., K., G., A., F., A., P., A., G., B., M., B., L., B., D., B., A., B., G., B., G. C., R., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 443:(1998), pp. 394-408. [10.1016/S0370-2693(98)01360-4]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/496882
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