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and CROMBIE, MB and GINGRICH, DM and HARTNER, GF and LEVMAN, GM and MARTIN, JF and ORR, RS and SAMPSON, CR and TEUSCHER, RJ and BULLOCK, FW and CATTERALL, CD and GIDDINGS, JC and JONES, TW and KHAN, AM and LANE, JB and MAKKAR, PL and SHAW, D and SHULMAN, J and BLANKENSHIP, K and KOCHOCKI, J and LU, B and MO, LW and CHARCHULA, K and CIBOROWSKI, J and GAJEWSKI, J and GRZELAK, G and KASPRZAK, M and KRZYZANOWSKI, M and MUCHOROWSKI, K and NOWAK, RJ and PAWLAK, JM and TYMIENIECKA, T and WROBLEWSKI, AK and ZAKRZEWSKI, JA and ZARNECKI, AF and ADAMUS, M and ABRAMOWICZ, H and EISENBERG, Y and GLASMAN, C and KARSHON, U and MONTAG, A and REVEL, D and SHAPIRA, A and FOUDAS, C and FORDHAM, C and LOVELESS, RJ and GOUSSIOU, A and ALI, I and BEHRENS, B and DASU, S and REEDER, DD and SMITH, WH and SILVERSTEIN, S and FRISKEN, WR and FURUTANI, KM and IGA, Y (1994) OBSERVATION OF DIRECT PROCESSES IN PHOTOPRODUCTION AT HERA. PHYS LETT B , 322 (3) 287 - 300.
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Abstract
Jets in photoproduction events have been studied with the ZEUS detector for gammap centre-of-mass energies ranging from 130 to 2 50 GeV. The inclusive jet distributions give evidence for the dominance of resolved photon interactions. In the di-jet sample the direct processes are for the first time clearly isolated. Di-jet cross sections for the resolved and direct processes are given in a restricted kinematic range.
| Type: | Article |
|---|---|
| Title: | OBSERVATION OF DIRECT PROCESSES IN PHOTOPRODUCTION AT HERA |
| Keywords: | CENTRAL TRACKING DETECTOR, LEADING-ORDER QCD, PARTON DISTRIBUTIONS, MONTE-CARLO, PHOTON, ZEUS, COLLIDER |
| UCL classification: | UCL > School of Arts and Social Sciences > Faculty of Arts and Humanities > Philosophy UCL > School of BEAMS > Faculty of Maths and Physical Sciences > Physics and Astronomy |
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