Deeply virtual Compton scattering and its beam charge asymmetry in e(+/-)p collisions at HERA

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Aaron, F. D. (author)

Deeply virtual Compton scattering and its beam charge asymmetry in e(+/-)p collisions at HERA

Article/chapterEnglish2009

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Elsevier BV,2009

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LIBRIS-ID:oai:lup.lub.lu.se:b4142fd4-63bb-4d81-864b-e11ff7a58133
https://lup.lub.lu.se/record/1517957URI
https://doi.org/10.1016/j.physletb.2009.10.035DOI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:ref swepub-contenttype

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A measurement of elastic deeply virtual Compton scattering gamma*p --> gamma p using e(+) p and e(-) p collision data recorded with the HI detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb(-1), almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q(2) of the exchanged photon and the centre-of-mass energy W of the gamma*p system in the kinematic domain 6.5 < Q(2) < 80 GeV2, 30 < W < 140 GeV and |t| < 1 GeV2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q(2) and W values and exponential t-slope parameters are derived. Using e(+) p and e(-) p data samples, a beam charge asymmetry is extracted for the first time in the low Biorken x kinematic domain. The observed asymmetry is attributed to the interference between Bethe-Heitler and deeply virtual Compton scattering processes. Experimental results are discussed in the context of two different models, one based on generalised parton distributions and one based on the dipole approach. (C) 2009 Elsevier B.V. All rights reserved.

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NATURVETENSKAP Fysik Subatomär fysik hsv//swe
NATURAL SCIENCES Physical Sciences Subatomic Physics hsv//eng

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Martin, M. Aldaya (author)
Alexa, C. (author)
Alimujiang, K. (author)
Andreev, V. (author)
Antunovic, B. (author)
Backovic, S. (author)
Baghdasaryan, A. (author)
Barrelet, E. (author)
Bartel, W. (author)
Begzsuren, K. (author)
Belousov, A. (author)
Bizot, J. C. (author)
Boudry, V. (author)
Bozovic-Jelisavcic, I. (author)
Bracinik, J. (author)
Brandt, G. (author)
Brinkmann, M. (author)
Brisson, V. (author)
Bruncko, D. (author)
Bunyatyan, A. (author)
Buschhorn, G. (author)
Bystritskaya, L. (author)
Campbell, A. J. (author)
Avila, K. B. Cantun (author)
Cerny, K. (author)
Cerny, V. (author)
Chekelian, V. (author)
Cholewa, A. (author)
Contreras, J. G. (author)
Coughlan, J. A. (author)
Cozzika, G. (author)
Cvach, J. (author)
Dainton, J. B. (author)
Daum, K. (author)
Deak, M. (author)
de Boer, Y. (author)
Delcourt, B. (author)
Del Degan, M. (author)
Delvax, J. (author)
De Wolf, E. A. (author)
Diaconu, C. (author)
Dodonov, V. (author)
Dossanov, A. (author)
Dubak, A. (author)
Eckerlin, G. (author)
Efremenko, V. (author)
Egli, S. (author)
Eliseev, A. (author)
Elsen, E. (author)
Falkiewicz, A. (author)
Favart, L. (author)
Fedotov, A. (author)
Felst, R. (author)
Feltesse, J. (author)
Ferencei, J. (author)
Fischer, D. -J. (author)
Fleischer, M. (author)
Fomenko, A. (author)
Gabathuler, E. (author)
Gayler, J. (author)
Ghazaryan, S. (author)
Glazov, A. (author)
Glushkov, I. (author)
Goerlich, L. (author)
Gogitidze, N. (author)
Gouzevitch, M. (author)
Grab, C. (author)
Greenshaw, T. (author)
Grell, B. R. (author)
Grindhammer, G. (author)
Habib, S. (author)
Haidt, D. (author)
Helebrant, C. (author)
Henderson, R. C. W. (author)
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Jönsson, LeifLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)quar-ljo (author)
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Klein, M. (author)
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Kluge, T. (author)
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List, J. (author)
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Nowak, G. (author)
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Osman, SakarLund University,Lunds universitet,Partikel- och kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Particle and nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)hep-sos (author)
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Roosen, R. (author)
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Valkarova, A. (author)
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Zacek, J. (author)
Zalesak, J. (author)
Zhang, Z. (author)
Zhokin, A. (author)
Zimmermann, T. (author)
Zohrabyan, H. (author)
Zomer, F. (author)
Zus, R. (author)
Partikel- och kärnfysikFysiska institutionen (creator_code:org_t)

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In:Physics Letters. Section B: Nuclear, Elementary Particle and High-Energy Physics: Elsevier BV681:5, s. 391-3990370-2693

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By the author/editor: Aaron, F. D.; Martin, M. Alday ...; Alexa, C.; Alimujiang, K.; Andreev, V.; Antunovic, B.; show more...; Backovic, S.; Baghdasaryan, A.; Barrelet, E.; Bartel, W.; Begzsuren, K.; Belousov, A.; Bizot, J. C.; Boudry, V.; Bozovic-Jelisavc ...; Bracinik, J.; Brandt, G.; Brinkmann, M.; Brisson, V.; Bruncko, D.; Bunyatyan, A.; Buschhorn, G.; Bystritskaya, L.; Campbell, A. J.; Avila, K. B. Can ...; Cerny, K.; Cerny, V.; Chekelian, V.; Cholewa, A.; Contreras, J. G.; Coughlan, J. A.; Cozzika, G.; Cvach, J.; Dainton, J. B.; Daum, K.; Deak, M.; de Boer, Y.; Delcourt, B.; Del Degan, M.; Delvax, J.; De Wolf, E. A.; Diaconu, C.; Dodonov, V.; Dossanov, A.; Dubak, A.; Eckerlin, G.; Efremenko, V.; Egli, S.; Eliseev, A.; Elsen, E.; Falkiewicz, A.; Favart, L.; Fedotov, A.; Felst, R.; Feltesse, J.; Ferencei, J.; Fischer, D. -J.; Fleischer, M.; Fomenko, A.; Gabathuler, E.; Gayler, J.; Ghazaryan, S.; Glazov, A.; Glushkov, I.; Goerlich, L.; Gogitidze, N.; Gouzevitch, M.; Grab, C.; Greenshaw, T.; Grell, B. R.; Grindhammer, G.; Habib, S.; Haidt, D.; Helebrant, C.; Henderson, R. C. ...; Hennekemper, E.; Henschel, H.; Herbst, M.; Herrera, G.; Hildebrandt, M.; Hiller, K. H.; Hoffmann, D.; Horisberger, R.; Hreus, T.; Jacquet, M.; Janssen, M. E.; Janssen, X.; Jönsson, Leif; Jung, A. W.; Jung, H.; Kapichine, M.; Katzy, J.; Kenyon, I. R.; Kiesling, C.; Klein, M.; Kleinwort, C.; Kluge, T.; Knutsson, A.; Kogler, R.; Kostka, P.; Kraemer, M.; Krastev, K.; Kretzschmar, J.; Kropivnitskaya, ...; Krueger, K.; Kutak, K.; Landon, M. P. J.; Lange, W.; Lastovicka-Medin ...; Laycock, P.; Lebedev, A.; Leibenguth, G.; Lendermann, V.; Levonian, S.; Li, G.; Lipka, K.; Liptaj, A.; List, B.; List, J.; Loktionova, N.; Lopez-Fernandez, ...; Lubimov, V.; Makankine, A.; Malinovski, E.; Marage, P.; Marti, Ll.; Martyn, H. -U.; Maxfield, S. J.; Mehta, A.; Meyer, A. B.; Meyer, H.; Meyer, J.; Michels, V.; Mikocki, S.; Milcewicz-Mika, ...; Moreau, F.; Morozov, A.; Morris, J. V.; Mozer, M. U.; Mudrinic, M.; Mueller, K.; Murin, P.; Naumann, Th.; Newman, P. R.; Niebuhr, C.; Nikiforov, A.; Nikitin, D.; Nowak, G.; Nowak, K.; Nozicka, M.; Olivier, B.; Olsson, J. E.; Osman, Sakar; Ozerov, D.; Palichik, V.; Panagoulias, I.; Pandurovic, M.; Papadopoulou, Th ...; Pascaud, C.; Patel, G. D.; Pejchal, O.; Perez, E.; Petrukhin, A.; Picuric, I.; Piec, S.; Pitzl, D.; Placakyte, R.; Pokorny, B.; Polifka, R.; Povh, B.; Radescu, V.; Rahmat, A. J.; Raicevic, N.; Raspiareza, A.; Ravdandorj, T.; Reimer, P.; Rizvi, E.; Robmann, P.; Roland, B.; Roosen, R.; Rostovtsev, A.; Rotaru, M.; Ruiz Tabasco, J. ...; Rurikova, Z.; Rusakov, S.; Salek, D.; Sankey, D. P. C.; Sauter, M.; Sauvan, E.; Schmitt, S.; Schoeffel, L.; Schoening, A.; Schultz-Coulon, ...; Seflow, F.; Shaw-West, R. N.; Shtarkov, L. N.; Shushkevich, S.; Sloan, T.; Smiljanic, I.; Soloviev, Y.; Sopicki, P.; South, D.; Spaskov, V.; Specka, A.; Staykova, Z.; Steder, M.; Stella, B.; Stoicea, G.; Straumann, U.; Sunar, D.; Sykora, T.; Tchoulakov, V.; Thompson, G.; Thompson, P. D.; Toll, T.; Tomasz, F.; Tran, T. H.; Traynor, D.; Trinh, T. N.; Truoel, P.; Tsakov, I.; Tseepeldorj, B.; Turnau, J.; Urban, K.; Valkarova, A.; Vallee, C.; Van Mechelen, P.; Trevinok, A. Var ...; Vazdik, Y.; Vinokurova, S.; Volchinski, V.; von den Driesch, ...; Wegener, D.; Wissing, Ch.; Wuensch, E.; Zacek, J.; Zalesak, J.; Zhang, Z.; Zhokin, A.; Zimmermann, T.; Zohrabyan, H.; Zomer, F.; Zus, R.; show less...

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