Inclusive measurement of diffractive deep-inelastic scattering at HERA

• Verfasst von: Aaron, Francisc Dionisie [VerfasserIn]
• Verfasst von: Hennekemper, Eva [VerfasserIn]
• Verfasst von: Krüger, Katja [VerfasserIn]
• Verfasst von: Lendermann, Victor [VerfasserIn]
• Verfasst von: Pirumov, Hayk [VerfasserIn]
• Verfasst von: Sauter, Michel David [VerfasserIn]
• Verfasst von: Schöning, André [VerfasserIn]
• Verfasst von: Schultz-Coulon, Hans-Christian [VerfasserIn]
• Titel: Inclusive measurement of diffractive deep-inelastic scattering at HERA
• Körperschaft: H1 Collaboration [VerfasserIn]
• Verf.angabe: the H1 Collaboration, F.D. Aaron, E. Hennekemper, K. Krüger, V. Lendermann, H. Pirumov, M. Sauter, H.-C. Schultz-Coulon, A. Schöning [und weitere]
• E-Jahr: 2012
• Jahr: 18 July 2012
• Umfang: 21 S.
• Fussnoten: Gesehen am 08.11.2018
• Titel Quelle: Enthalten in: The European physical journal / C
• Ort Quelle: Berlin : Springer, 1998
• Jahr Quelle: 2012
• Band/Heft Quelle: 72(2012), 7, Artikel-ID 2074
• ISSN Quelle: 1434-6052
• DOI: doi:10.1140/epjc/s10052-012-2074-2
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Deep Inelastic Scattering
• Sach-SW: Diffractive Cross Section
• Sach-SW: Hadronic Final State
• Sach-SW: Monte Carlo
• Sach-SW: Proton Dissociation
• K10plus-PPN: 158264067X

Abstract

The diffractive process ep→eXY, where Y denotes a proton or its low mass excitation with M Y <1.6 GeV, is studied with the H1 experiment at HERA. The analysis is restricted to the phase space region of the photon virtuality 3 ≤ Q 2 ≤ 1600 GeV2, the square of the four-momentum transfer at the proton vertex |t|< 1.0 GeV2 and the longitudinal momentum fraction of the incident proton carried by the colourless exchange x ℙ<0.05.\printthanksTriple differential cross sections are measured as a function of x ℙ, Q 2 and β=x/x ℙ where x is the Bjorken scaling variable. These measurements are made after selecting diffractive events by demanding a large empty rapidity interval separating the final state hadronic systems X and Y. High statistics measurements covering the data taking periods 1999-2000 and 2004-2007 are combined with previously published results in order to provide a single set of diffractive cross sections from the H1 experiment using the large rapidity gap selection method. The combined data represent a factor between three and thirty increase in statistics with respect to the previously published results. The measurements are compared with predictions from NLO QCD calculations based on diffractive parton densities and from a dipole model. The proton vertex factorisation hypothesis is tested.