Tests of QCD factorisation in the diffractive production of dijets in deep-inelastic scattering and photoproduction at HERA

Aktas, A; Andreev, V; Anthonis, T; Antunovic, B; Aplin, S; Asmone, A; Astvatsatourov, A; Babaev, A; Backovic, S; Baghdasaryan, A; Baranov, P; Barrelet, E; Bartel, W; Baudrand, S; Beckingham, M; Begzsuren, K; Behnke, O; Behrendt, O; Belousov, A; Berger, N; Bizot, JC; Boenig, M-O; Boudry, V; Bozovic-Jelisavcic, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Bruncko, D; Busser, FW; Bunyatyan, A; Buschhorn, G; Bystritskaya, L; Campbell, AJ; Cantun Avila, KB; Cassol-Brunner, F; Cerny, K; Cerny, V; Chekelian, V; Cholewa, A; Contreras, JG; Coughlan, JA; Cozzika, G; Cvach, J; Dainton, JB; Daum, K; De Boer, Y; Delcourt, B; Del Degan, M; De Roeck, A; De Wolf, EA; Diaconu, C; Dodonov, V; Dubak, A; Eckerlin, G; Efremenko, V; Egli, S; Eichler, R; Eisele, F; Eliseev, A; Elsen, E; Essenov, S; Falkewicz, A; Faulkner, PJW; Favart, L; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Finke, L; Fleischer, M; Flucke, G; Fomenko, A; Franke, G; Frisson, T; Gabathuler, E; Garutti, E; Gayler, J; Ghazaryan, S; Ginzburgskaya, S; Glazov, A; Glushkov, I; Goerlich, L; Goettlich, M; Gogitidze, N; Gorbounov, S; Gouzevitch, M; Grab, C; Greenshaw, T; Gregori, M; Grell, BR; Grindhammer, G; Habib, S; Haidt, D; Hansson, M; Heinzelmann, G; Helebrant, C; Henderson, RCW; Henschel, H; Herrera, G; Hildebrandt, M; Hiller, KH; Hoffmann, D; Horisberger, R; Hovhannisyan, A; Hreus, T; Hussain, S; Jacquet, M; Janssen, X; Jemanov, V; Jonsson, L; Johnson, DP; Jung, AW; Jung, H; Kapichine, M; Katzy, J; Kenyon, IR; Kiesling, C; Klein, M; Kleinwort, C; Klimkovich, T; Kluge, T; Knies, G; Knutsson, A; Korbel, V; Kostka, P; Kraemer, M; Krastev, K; Kretzschmar, J; Kropivnitskaya, A; Kruger, K; Landon, MPJ; Lange, W; Lastovicka-Medin, G; Laycock, P; Lebedev, A; Leibenguth, G; Lendermann, V; Levonian, S; Lindfeld, L; Lipka, K; Liptaj, A; List, B; List, J; Loktionova, N; Lopez-Fernandez, R; Lubimov, V; Lucaci-Timoce, A-I; Lueders, H; Lytkin, L; Makankine, A; Malinovski, E; Marage, P; Marti, L; Martisikova, M; Martyn, H-U; Maxfield, SJ; Mehta, A; Meier, K; Meyer, AB; Meyer, H; Meyer, J; Michels, V; Mikocki, S; Milcewicz-Mika, I; Mladenov, D; Mohamed, A; Moreau, F; Morozov, A; Morris, JV; Mozer, MU; Muller, K; Murin, P; Nankov, K; Naroska, B; Naumann, T; Newman, PR; Niebuhr, C; Nikiforov, A; Nowak, G; Nowak, K; Nozicka, M; Oganezov, R; Olivier, B; Olsson, JE; Osman, S; Ozerov, D; Palichik, V; Panagoulias, I; Pandurovic, M; Papadopoulou, T; Pascaud, C; Patel, GD; Peng, H; Perez, E; Perez-Astudillo, D; Perieanu, A; Petrukhin, A; Picuric, I; Piec, S; Pitzl, D; Placakyte, R; Povh, B; Prideaux, P; Rahmat, AJ; Raicevic, N; Reimer, P; Rimmer, A; Risler, C; Rizvi, E; Robmann, P; Roland, B; Roosen, R; Rostovtsev, A; Rurikova, Z; Rusakov, S; Salvaire, F; Sankey, DPC; Sauter, M; Sauvan, E; Schatzel, S; Schmidt, S; Schmitt, S; Schmitz, C; Schoeffel, L; Schoning, A; Schultz-Coulon, H-C; Sefkow, F; Shaw-West, RN; Sheviakov, I; Shtarkov, LN; Sloan, T; Smiljanic, I; Smirnov, P; Soloviev, Y; South, D; Spaskov, V; Specka, A; Steder, M; Stella, B; Stiewe, J; Stoilov, A; Straumann, U; Sunar, D; Sykora, T; Tchoulakov, V; Thompson, G; Thompson, PD; Toll, T; Tomasz, F; Traynor, D; Trinh, TN; Truol, P; Tsakov, I; Tsipolitis, G; Tsurin, I; Turnau, J; Tzamariudaki, E; Urban, K; Usik, A; Utkin, D; Valkarova, A; Vallee, C; Van Mechelen, P; Vargas Trevino, A; Vazdik, Y; Vinokurova, S; Volchinski, V; Wacker, K; Weber, G; Weber, R; Wegener, D; Werner, C; Wessels, M; Wissing, C; Wolf, R; Wunsch, E; Xella, S; Yan, W; Yeganov, V; Zacek, J; Zalesak, J; Zhang, Z; Zhelezov, A; Zhokin, A; Zhu, YC; Zimmermann, J; Zimmermann, T; Zohrabyan, H; Zomer, F

dc.contributor.author	Aktas, A	en
dc.contributor.author	Andreev, V	en
dc.contributor.author	Anthonis, T	en
dc.contributor.author	Antunovic, B	en
dc.contributor.author	Aplin, S	en
dc.contributor.author	Asmone, A	en
dc.contributor.author	Astvatsatourov, A	en
dc.contributor.author	Babaev, A	en
dc.contributor.author	Backovic, S	en
dc.contributor.author	Baghdasaryan, A	en
dc.contributor.author	Baranov, P	en
dc.contributor.author	Barrelet, E	en
dc.contributor.author	Bartel, W	en
dc.contributor.author	Baudrand, S	en
dc.contributor.author	Beckingham, M	en
dc.contributor.author	Begzsuren, K	en
dc.contributor.author	Behnke, O	en
dc.contributor.author	Behrendt, O	en
dc.contributor.author	Belousov, A	en
dc.contributor.author	Berger, N	en
dc.contributor.author	Bizot, JC	en
dc.contributor.author	Boenig, M-O	en
dc.contributor.author	Boudry, V	en
dc.contributor.author	Bozovic-Jelisavcic, I	en
dc.contributor.author	Bracinik, J	en
dc.contributor.author	Brandt, G	en
dc.contributor.author	Brinkmann, M	en
dc.contributor.author	Brisson, V	en
dc.contributor.author	Bruncko, D	en
dc.contributor.author	Busser, FW	en
dc.contributor.author	Bunyatyan, A	en
dc.contributor.author	Buschhorn, G	en
dc.contributor.author	Bystritskaya, L	en
dc.contributor.author	Campbell, AJ	en
dc.contributor.author	Cantun Avila, KB	en
dc.contributor.author	Cassol-Brunner, F	en
dc.contributor.author	Cerny, K	en
dc.contributor.author	Cerny, V	en
dc.contributor.author	Chekelian, V	en
dc.contributor.author	Cholewa, A	en
dc.contributor.author	Contreras, JG	en
dc.contributor.author	Coughlan, JA	en
dc.contributor.author	Cozzika, G	en
dc.contributor.author	Cvach, J	en
dc.contributor.author	Dainton, JB	en
dc.contributor.author	Daum, K	en
dc.contributor.author	De Boer, Y	en
dc.contributor.author	Delcourt, B	en
dc.contributor.author	Del Degan, M	en
dc.contributor.author	De Roeck, A	en
dc.contributor.author	De Wolf, EA	en
dc.contributor.author	Diaconu, C	en
dc.contributor.author	Dodonov, V	en
dc.contributor.author	Dubak, A	en
dc.contributor.author	Eckerlin, G	en
dc.contributor.author	Efremenko, V	en
dc.contributor.author	Egli, S	en
dc.contributor.author	Eichler, R	en
dc.contributor.author	Eisele, F	en
dc.contributor.author	Eliseev, A	en
dc.contributor.author	Elsen, E	en
dc.contributor.author	Essenov, S	en
dc.contributor.author	Falkewicz, A	en
dc.contributor.author	Faulkner, PJW	en
dc.contributor.author	Favart, L	en
dc.contributor.author	Fedotov, A	en
dc.contributor.author	Felst, R	en
dc.contributor.author	Feltesse, J	en
dc.contributor.author	Ferencei, J	en
dc.contributor.author	Finke, L	en
dc.contributor.author	Fleischer, M	en
dc.contributor.author	Flucke, G	en
dc.contributor.author	Fomenko, A	en
dc.contributor.author	Franke, G	en
dc.contributor.author	Frisson, T	en
dc.contributor.author	Gabathuler, E	en
dc.contributor.author	Garutti, E	en
dc.contributor.author	Gayler, J	en
dc.contributor.author	Ghazaryan, S	en
dc.contributor.author	Ginzburgskaya, S	en
dc.contributor.author	Glazov, A	en
dc.contributor.author	Glushkov, I	en
dc.contributor.author	Goerlich, L	en
dc.contributor.author	Goettlich, M	en
dc.contributor.author	Gogitidze, N	en
dc.contributor.author	Gorbounov, S	en
dc.contributor.author	Gouzevitch, M	en
dc.contributor.author	Grab, C	en
dc.contributor.author	Greenshaw, T	en
dc.contributor.author	Gregori, M	en
dc.contributor.author	Grell, BR	en
dc.contributor.author	Grindhammer, G	en
dc.contributor.author	Habib, S	en
dc.contributor.author	Haidt, D	en
dc.contributor.author	Hansson, M	en
dc.contributor.author	Heinzelmann, G	en
dc.contributor.author	Helebrant, C	en
dc.contributor.author	Henderson, RCW	en
dc.contributor.author	Henschel, H	en
dc.contributor.author	Herrera, G	en
dc.contributor.author	Hildebrandt, M	en
dc.contributor.author	Hiller, KH	en
dc.contributor.author	Hoffmann, D	en
dc.contributor.author	Horisberger, R	en
dc.contributor.author	Hovhannisyan, A	en
dc.contributor.author	Hreus, T	en
dc.contributor.author	Hussain, S	en
dc.contributor.author	Jacquet, M	en
dc.contributor.author	Janssen, X	en
dc.contributor.author	Jemanov, V	en
dc.contributor.author	Jonsson, L	en
dc.contributor.author	Johnson, DP	en
dc.contributor.author	Jung, AW	en
dc.contributor.author	Jung, H	en
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dc.contributor.author	Katzy, J	en
dc.contributor.author	Kenyon, IR	en
dc.contributor.author	Kiesling, C	en
dc.contributor.author	Klein, M	en
dc.contributor.author	Kleinwort, C	en
dc.contributor.author	Klimkovich, T	en
dc.contributor.author	Kluge, T	en
dc.contributor.author	Knies, G	en
dc.contributor.author	Knutsson, A	en
dc.contributor.author	Korbel, V	en
dc.contributor.author	Kostka, P	en
dc.contributor.author	Kraemer, M	en
dc.contributor.author	Krastev, K	en
dc.contributor.author	Kretzschmar, J	en
dc.contributor.author	Kropivnitskaya, A	en
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dc.contributor.author	Lindfeld, L	en
dc.contributor.author	Lipka, K	en
dc.contributor.author	Liptaj, A	en
dc.contributor.author	List, B	en
dc.contributor.author	List, J	en
dc.contributor.author	Loktionova, N	en
dc.contributor.author	Lopez-Fernandez, R	en
dc.contributor.author	Lubimov, V	en
dc.contributor.author	Lucaci-Timoce, A-I	en
dc.contributor.author	Lueders, H	en
dc.contributor.author	Lytkin, L	en
dc.contributor.author	Makankine, A	en
dc.contributor.author	Malinovski, E	en
dc.contributor.author	Marage, P	en
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dc.contributor.author	Martisikova, M	en
dc.contributor.author	Martyn, H-U	en
dc.contributor.author	Maxfield, SJ	en
dc.contributor.author	Mehta, A	en
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dc.contributor.author	Meyer, AB	en
dc.contributor.author	Meyer, H	en
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dc.contributor.author	Michels, V	en
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dc.contributor.author	Milcewicz-Mika, I	en
dc.contributor.author	Mladenov, D	en
dc.contributor.author	Mohamed, A	en
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dc.contributor.author	Morris, JV	en
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dc.contributor.author	Nowak, K	en
dc.contributor.author	Nozicka, M	en
dc.contributor.author	Oganezov, R	en
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dc.contributor.author	Panagoulias, I	en
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dc.contributor.author	Papadopoulou, T	en
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dc.contributor.author	Patel, GD	en
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dc.contributor.author	Rurikova, Z	en
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dc.contributor.author	Schmitz, C	en
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dc.contributor.author	Thompson, PD	en
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dc.contributor.author	Van Mechelen, P	en
dc.contributor.author	Vargas Trevino, A	en
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dc.contributor.author	Wessels, M	en
dc.contributor.author	Wissing, C	en
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dc.contributor.author	Wunsch, E	en
dc.contributor.author	Xella, S	en
dc.contributor.author	Yan, W	en
dc.contributor.author	Yeganov, V	en
dc.contributor.author	Zacek, J	en
dc.contributor.author	Zalesak, J	en
dc.contributor.author	Zhang, Z	en
dc.contributor.author	Zhelezov, A	en
dc.contributor.author	Zhokin, A	en
dc.contributor.author	Zhu, YC	en
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dc.contributor.author	Zimmermann, T	en
dc.contributor.author	Zohrabyan, H	en
dc.contributor.author	Zomer, F	en
dc.date.accessioned	2014-03-01T01:27:22Z
dc.date.available	2014-03-01T01:27:22Z
dc.date.issued	2007	en
dc.identifier.issn	1434-6044	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18423
dc.subject.classification	Physics, Particles & Fields	en
dc.subject.other	JET CROSS-SECTIONS	en
dc.subject.other	LEAD/SCINTILLATING-FIBER CALORIMETER	en
dc.subject.other	HADRON-HADRON COLLISIONS	en
dc.subject.other	LARGE RAPIDITY GAPS	en
dc.subject.other	TO-LEADING ORDER	en
dc.subject.other	LUND MONTE-CARLO	en
dc.subject.other	PARTON DISTRIBUTIONS	en
dc.subject.other	FERMILAB TEVATRON	en
dc.subject.other	EP SCATTERING	en
dc.subject.other	PERTURBATION-THEORY	en
dc.title	Tests of QCD factorisation in the diffractive production of dijets in deep-inelastic scattering and photoproduction at HERA	en
heal.type	journalArticle	en
heal.identifier.primary	10.1140/epjc/s10052-007-0325-4	en
heal.identifier.secondary	http://dx.doi.org/10.1140/epjc/s10052-007-0325-4	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Measurements are presented of differential dijet cross sections in diffractive photoproduction (Q2<0.01 GeV2) and deep-inelastic scattering processes (DIS, 4<Q2<80 GeV2). The event topology is given by ep→eXY, in which the system X, containing at least two jets, is separated from a leading low-mass baryonic system Y by a large rapidity gap. The dijet cross sections are compared with NLO QCD predictions based on diffractive parton densities previously obtained from a QCD analysis of inclusive diffractive DIS cross sections by H1. In DIS, the dijet data are well described, supporting the validity of QCD factorisation. The diffractive DIS dijet data are more sensitive to the diffractive gluon density at high fractional parton momentum than the measurements of inclusive diffractive DIS. In photoproduction, the predicted dijet cross section has to be multiplied by a factor of approximately 0.5 for both direct and resolved photon interactions to describe the measurements. The ratio of measured dijet cross section to NLO prediction in photoproduction is a factor 0.5±0.1 smaller than the same ratio in DIS. This suppression is the first clear observation of QCD hard scattering factorisation breaking at HERA. The measurements are also compared to the two soft colour neutralisation models SCI and GAL. The SCI model describes diffractive dijet production in DIS but not in photoproduction. The GAL model fails in both kinematic regions. © 2007 Springer-Verlag / Società Italiana di Fisica.	en
heal.publisher	SPRINGER	en
heal.journalName	European Physical Journal C	en
dc.identifier.doi	10.1140/epjc/s10052-007-0325-4	en
dc.identifier.isi	ISI:000248390700004	en
dc.identifier.volume	51	en
dc.identifier.issue	3	en
dc.identifier.spage	549	en
dc.identifier.epage	568	en