Diffractive dijet photoproduction in ep collisions at HERA
Measurements are presented of single and double-differential dijet cross sections in diffractive photoproduction based on a data sample with an integrated luminosity of 47 pb−1. The events are of the type ep→eXY, where the hadronic system X contains at least two jets and is separated by a large rapi...
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| Main Authors: | , , , , |
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| Corporate Author: | |
| Format: | Article (Journal) |
| Language: | English |
| Published: |
05 October 2010
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| In: |
The European physical journal. C, Particles and fields
Year: 2010, Volume: 70, Pages: 15-37 |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-010-1448-6 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epjc/s10052-010-1448-6
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| Author Notes: | The H1 Collaboration* |
| Summary: | Measurements are presented of single and double-differential dijet cross sections in diffractive photoproduction based on a data sample with an integrated luminosity of 47 pb−1. The events are of the type ep→eXY, where the hadronic system X contains at least two jets and is separated by a large rapidity gap from the system Y, which consists of a leading proton or low-mass proton excitation. The dijet cross sections are compared with QCD calculations at next-to-leading order and with a Monte Carlo model based on leading order matrix elements with parton showers. The measured cross sections are smaller than those obtained from the next-to-leading order calculations by a factor of about 0.6. This suppression factor has no significant dependence on the fraction xγof the photon four-momentum entering the hard subprocess. Ratios of the diffractive to the inclusive dijet cross sections are measured for the first time and are compared with Monte Carlo models. |
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| Item Description: | *The H1 Collaboration: F.D. Aaron, H. Pirumov, M. Sauter, A. Schöning, H.-C. Schultz-Coulon [und 215 weitere Personen] Gesehen am 15.11.2022 |
| Physical Description: | Online Resource |
| ISSN: | 1434-6052 |
| DOI: | 10.1140/epjc/s10052-010-1448-6 |