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Inclusive measurement of diffractive deep-inelastic scattering at HERA

Aaron, F. D.; Alexa, C.; Andreev, V.; Backovic, S.; Baghdasaryan, A.; Baghdasaryan, S.; Barrelet, E.; Bartel, W.; Begzsuren, K. and Belousov, A., et al. (2012) In European Physical Journal C. Particles and Fields 72(7).
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 fourmomentum transfer at the proton vertex vertical bar t vertical bar < 1.0 GeV2 and the longitudinal momentum fraction of the incident proton carried by the colourless exchange x(P) < 0.05. Triple differential cross sections are measured as a function of x(P), Q(2) and beta = 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... (More)
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 fourmomentum transfer at the proton vertex vertical bar t vertical bar < 1.0 GeV2 and the longitudinal momentum fraction of the incident proton carried by the colourless exchange x(P) < 0.05. Triple differential cross sections are measured as a function of x(P), Q(2) and beta = 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. (Less)
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European Physical Journal C. Particles and Fields
volume
72
issue
7
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Springer
external identifiers
  • wos:000307269400021
  • scopus:84865510538
ISSN
1434-6044
DOI
10.1140/epjc/s10052-012-2074-2
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English
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2012-09-26 15:04:51
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@article{3ef602e3-4da7-45e9-aadb-3975bd7cacb2,
  abstract     = {The diffractive process ep -&gt; eXY, where Y denotes a proton or its low mass excitation with M-Y &lt; 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 &lt;= Q(2) &lt;= 1600 GeV2, the square of the fourmomentum transfer at the proton vertex vertical bar t vertical bar &lt; 1.0 GeV2 and the longitudinal momentum fraction of the incident proton carried by the colourless exchange x(P) &lt; 0.05. Triple differential cross sections are measured as a function of x(P), Q(2) and beta = 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.},
  author       = {Aaron, F. D. and Alexa, C. and Andreev, V. and Backovic, S. and Baghdasaryan, A. and Baghdasaryan, S. and Barrelet, E. and Bartel, W. and Begzsuren, K. and Belousov, A. and Belov, P. and Bizot, J. C. and Boudry, V. and Bozovic-Jelisavcic, I. and Bracinik, J. and Brandt, G. and Brinkmann, M. and Brisson, V. and Britzger, D. and Bruncko, D. and Bunyatyan, A. and Bylinkin, A. and Bystritskaya, L. and Campbell, A. J. and Cantun Avila, K. B. and Ceccopieri, F. and Cerny, K. and Cerny, V. and Chekelian, V. and Contreras, J. G. and Coughlan, J. A. and Cvach, J. and Dainton, J. B. and Daum, K. and Delcourt, B. and Delvax, J. and De Wolf, E. A. and Diaconu, C. and Dobre, M. and Dodonov, V. and Dossanov, A. and Dubak, A. and Eckerlin, G. and Egli, S. and Eliseev, A. and Elsen, E. and Favart, L. and Fedotov, A. and Felst, R. and Feltesse, J. and Ferencei, J. and Fischer, D. -J. and Fleischer, M. and Fomenko, A. and Gabathuler, E. and Gayler, J. and Ghazaryan, S. and Glazov, A. and Goerlich, L. and Gogitidze, N. and Gouzevitch, M. and Grab, C. and Grebenyuk, A. and Greenshaw, T. and Grindhammer, G. and Habib, S. and Haidt, D. and Henderson, R. C. W. and Hennekemper, E. and Henschel, H. and Herbst, M. and Herrera, G. and Hildebrandt, M. and Hiller, K. H. and Hladky, J. and Hoffmann, D. and Horisberger, R. and Hreus, T. and Huber, F. and Jacquet, M. and Janssen, X. and Jönsson, Leif and Jung, H. and Kapichine, M. and Kenyon, I. R. and Kiesling, C. and Klein, M. and Kleinwort, C. and Kluge, T. and Kogler, R. and Kostka, P. and Kraemer, M. and Kretzschmar, J. and Krueger, K. and Landon, M. P. J. and Lange, W. and Lastovicka-Medin, G. and Laycock, P. and Lebedev, A. and Lendermann, V. and Levonian, S. and Lipka, K. and List, B. and List, J. and Lobodzinski, B. and Lopez-Fernandez, R. and Lubimov, V. and Malinovski, E. and Martyn, H. -U. and Maxfield, S. J. and Mehta, A. and Meyer, A. B. and Meyer, H. and Meyer, J. and Mikocki, S. and Milcewicz-Mika, I. and Moreau, F. and Morozov, A. and Morris, J. V. and Mueller, K. and Naumann, Th and Newman, P. R. and Niebuhr, C. and Nikitin, D. and Nowak, G. and Nowak, K. and Olsson, J. E. and Ozerov, D. and Pahl, P. and Palichik, V. and Panagoulias, I. and Pandurovic, M. and Papadopoulou, Th and Pascaud, C. and Patel, G. D. and Perez, E. and Petrukhin, A. and Picuric, I. and Pirumov, H. and Pitzl, D. and Placakyte, R. and Pokorny, B. and Polifka, R. and Povh, B. and Radescu, V. and Raicevic, N. and Ravdandorj, T. and Reimer, P. and Rizvi, E. and Robmann, P. and Roosen, R. and Rostovtsev, A. and Rotaru, M. and Ruiz Tabasco, J. E. and Rusakov, S. and Salek, D. and Sankey, D. P. C. and Sauter, M. and Sauvan, E. and Schmitt, S. and Schoeffel, L. and Schoening, A. and Schultz-Coulon, H. -C. and Sefkow, F. and Shtarkov, L. N. and Shushkevich, S. and Sloan, T. and Soloviev, Y. and Sopicki, P. and South, D. and Spaskov, V. and Specka, A. and Staykova, Z. and Steder, M. and Stella, B. and Stoicea, G. and Straumann, U. and Sykora, T. and Thompson, P. D. and Tran, T. H. and Traynor, D. and Truoel, P. and Tsakov, I. and Tseepeldorj, B. and Turnau, J. and Valkarova, A. and Vallee, C. and Van Mechelen, P. and Vazdik, Y. and Wegener, D. and Wuensch, E. and Zacek, J. and Zalesak, J. and Zhang, Z. and Zhokin, A. and Zlebcik, R. and Zohrabyan, H. and Zomer, F.},
  issn         = {1434-6044},
  language     = {eng},
  number       = {7},
  publisher    = {Springer},
  series       = {European Physical Journal C. Particles and Fields},
  title        = {Inclusive measurement of diffractive deep-inelastic scattering at HERA},
  url          = {http://dx.doi.org/10.1140/epjc/s10052-012-2074-2},
  volume       = {72},
  year         = {2012},
}