Multi-lepton production at high transverse momenta in ep collisions at HERA

Aaron, FD; Alexa, C; Andreev, V; Antunovic, B; Aplin, S; Asmone, A; Astvatsatourov, A; Bacchetta, A; Backovic, S; Baghdasaryan, A; Baranov, P; Barrelet, E; Bartel, W; Beckingham, M; Begzsuren, K; Behnke, O; Belousov, A; Berger, N; Bizot, JC; Boenig, MO; Boudry, V; Bozovic-Jelisavcic, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Bruncko, D; Bunyatyan, A; Buschhorn, G; Bystritskaya, L; Campbell, AJ; Avila, KBC; Cassol-Brunner, F; Cerny, K; Cerny, V; Chekelian, V; Cholewa, A; Contreras, JG; Coughlan, JA; Cozzika, G; Cvach, J; Dainton, JB; Daum, K; Deak, M; de Boer, Y; Delcourt, B; Del Degan, M; Delvax, J; De Roeck, A; De Wolf, EA; Diaconu, C; Dodonov, V; Dossanov, A; Dubak, A; Eckerlin, G; Efremenko, V; Egli, S; Eliseev, A; Elsen, E; Essenov, S; Falkiewicz, A; Faulkner, PJW; Favart, L; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Fleischer, M; Fomenko, A; Gabathuler, E; Gayler, J; Ghazaryan, S; Glazov, A; Glushkov, I; Goerlich, L; Goettlich, M; Gogitidze, N; Gouzevitch, M; Grab, C; Greenshaw, T; Grell, BR; Grindhammer, G; Habib, S; Haidt, D; Hansson, M; Helebrant, C; Henderson, RCW; Hennekemper, E; Henschel, H; Herrera, G; Hildebrandt, M; Hiller, KH; Hoffmann, D; Horisberger, R; Hovhannisyan, A; Hreus, T; Jacquet, M; Janssen, ME; 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; Knutsson, A; Kogler, R; Korbel, V; Kostka, P; Kraemer, M; Krastev, K; Kretzschmar, J; Kropivnitskaya, A; Kruger, K; Kutak, K; Landon, MPJ; Lange, W; Lastovicka-Medin, G; Laycock, P; Lebedev, A; Leibenguth, G; Lendermann, V; Levonian, S; Li, G; Lipka, K; Liptaj, A; List, B; List, J; Loktionova, N; Lopez-Fernandez, R; Lubimov, V; Lucaci-Timoce, AI; Lytkin, L; Makankine, A; Malinovski, E; Marage, P; Marti, L; Martyn, HU; Maxfield, SJ; Mehta, A; Meier, K; Meyer, AB; Meyer, H; Meyer, H; Meyer, J; Michels, V; Mikocki, S; Milcewicz-Mika, I; Moreau, F; Morozov, A; Morris, JV; Mozer, MU; Mudrinic, M; Muller, K; Murin, P; Nankov, K; Naroska, B; Naumann, T; Newman, PR; Niebuhr, C; Nikiforov, A; Nowak, G; Nowak, K; Nozicka, M; Olivier, B; Olsson, JE; Osman, S; Ozerov, D; Palichik, V; Panagoulias, I; Pandurovic, M; Papadopoulou, T; Pascaud, C; Patel, GD; Pejchal, O; Peng, H; Perez, E; Petrukhin, A; Picuric, I; Piec, S; Pitzl, D; Placakyte, R; Polifka, R; Povh, B; Preda, T; Radescu, V; Rahmat, AJ; Raicevic, N; Raspiareza, A; Ravdandorj, T; Reimer, P; Rizvi, E; Robmann, P; Roland, B; Roosen, R; Rostovtsev, A; Rotaru, M; Tabasco, JER; Rurikova, Z; Rusakov, S; Salek, D; Salvaire, F; Sankey, DPC; Sauter, M; Sauvan, E; Schmidt, S; Schmitt, S; Schmitz, C; Schoeffel, L; Schoning, A; Schultz-Coulon, HC; Sefkow, F; Shaw-West, RN; Sheviakov, I; Shtarkov, LN; Shushkevich, S; Sloan, T; Smiljanic, I; Smirnov, P; Soloviev, Y; Sopicki, P; South, D; Spaskov, V; Specka, A; Staykova, Z; Steder, M; Stella, B; Straumann, U; Sunar, D; Sykora, T; Tchoulakov, V; Thompson, G; Thompson, PD; Toll, T; Tomasz, F; Tran, TH; Traynor, D; Trinh, TN; Truol, P; Tsakov, I; Tseepeldorj, B; Tsurin, I; Turnau, J; Tzamariudaki, E; Urban, K; Valkarova, A; Vallee, C; Van Mechelen, P; Trevino, AV; Vazdik, Y; Vinokurova, S; Volchinski, V; Wegener, D; Wessels, M; Wissing, C; Wunsch, E; Yeganov, V; Zacek, J; Zalesak, J; Zhang, Z; Zhelezov, A; Zhokin, A; Zhu, YC; Zimmermann, T; Zohrabyan, H; Zomer, F

dc.contributor.author	Aaron, FD	en
dc.contributor.author	Alexa, C	en
dc.contributor.author	Andreev, V	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	Bacchetta, 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	Beckingham, M	en
dc.contributor.author	Begzsuren, K	en
dc.contributor.author	Behnke, O	en
dc.contributor.author	Belousov, A	en
dc.contributor.author	Berger, N	en
dc.contributor.author	Bizot, JC	en
dc.contributor.author	Boenig, MO	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	Bunyatyan, A	en
dc.contributor.author	Buschhorn, G	en
dc.contributor.author	Bystritskaya, L	en
dc.contributor.author	Campbell, AJ	en
dc.contributor.author	Avila, KBC	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	Deak, M	en
dc.contributor.author	de Boer, Y	en
dc.contributor.author	Delcourt, B	en
dc.contributor.author	Del Degan, M	en
dc.contributor.author	Delvax, J	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	Dossanov, A	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	Eliseev, A	en
dc.contributor.author	Elsen, E	en
dc.contributor.author	Essenov, S	en
dc.contributor.author	Falkiewicz, 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	Fleischer, M	en
dc.contributor.author	Fomenko, A	en
dc.contributor.author	Gabathuler, E	en
dc.contributor.author	Gayler, J	en
dc.contributor.author	Ghazaryan, 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	Gouzevitch, M	en
dc.contributor.author	Grab, C	en
dc.contributor.author	Greenshaw, T	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	Helebrant, C	en
dc.contributor.author	Henderson, RCW	en
dc.contributor.author	Hennekemper, E	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	Jacquet, M	en
dc.contributor.author	Janssen, ME	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
dc.contributor.author	Kapichine, M	en
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dc.contributor.author	Klein, M	en
dc.contributor.author	Kleinwort, C	en
dc.contributor.author	Klimkovich, T	en
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dc.contributor.author	Kogler, R	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
dc.contributor.author	Kruger, K	en
dc.contributor.author	Kutak, K	en
dc.contributor.author	Landon, MPJ	en
dc.contributor.author	Lange, W	en
dc.contributor.author	Lastovicka-Medin, G	en
dc.contributor.author	Laycock, P	en
dc.contributor.author	Lebedev, A	en
dc.contributor.author	Leibenguth, G	en
dc.contributor.author	Lendermann, V	en
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dc.contributor.author	Li, G	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, AI	en
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dc.contributor.author	Makankine, A	en
dc.contributor.author	Malinovski, E	en
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dc.contributor.author	Milcewicz-Mika, I	en
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dc.contributor.author	Mozer, MU	en
dc.contributor.author	Mudrinic, M	en
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dc.contributor.author	Nankov, K	en
dc.contributor.author	Naroska, B	en
dc.contributor.author	Naumann, T	en
dc.contributor.author	Newman, PR	en
dc.contributor.author	Niebuhr, C	en
dc.contributor.author	Nikiforov, A	en
dc.contributor.author	Nowak, G	en
dc.contributor.author	Nowak, K	en
dc.contributor.author	Nozicka, M	en
dc.contributor.author	Olivier, B	en
dc.contributor.author	Olsson, JE	en
dc.contributor.author	Osman, S	en
dc.contributor.author	Ozerov, D	en
dc.contributor.author	Palichik, V	en
dc.contributor.author	Panagoulias, I	en
dc.contributor.author	Pandurovic, M	en
dc.contributor.author	Papadopoulou, T	en
dc.contributor.author	Pascaud, C	en
dc.contributor.author	Patel, GD	en
dc.contributor.author	Pejchal, O	en
dc.contributor.author	Peng, H	en
dc.contributor.author	Perez, E	en
dc.contributor.author	Petrukhin, A	en
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dc.contributor.author	Radescu, V	en
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dc.contributor.author	Thompson, G	en
dc.contributor.author	Thompson, PD	en
dc.contributor.author	Toll, T	en
dc.contributor.author	Tomasz, F	en
dc.contributor.author	Tran, TH	en
dc.contributor.author	Traynor, D	en
dc.contributor.author	Trinh, TN	en
dc.contributor.author	Truol, P	en
dc.contributor.author	Tsakov, I	en
dc.contributor.author	Tseepeldorj, B	en
dc.contributor.author	Tsurin, I	en
dc.contributor.author	Turnau, J	en
dc.contributor.author	Tzamariudaki, E	en
dc.contributor.author	Urban, K	en
dc.contributor.author	Valkarova, A	en
dc.contributor.author	Vallee, C	en
dc.contributor.author	Van Mechelen, P	en
dc.contributor.author	Trevino, AV	en
dc.contributor.author	Vazdik, Y	en
dc.contributor.author	Vinokurova, S	en
dc.contributor.author	Volchinski, V	en
dc.contributor.author	Wegener, D	en
dc.contributor.author	Wessels, M	en
dc.contributor.author	Wissing, C	en
dc.contributor.author	Wunsch, E	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
dc.contributor.author	Zimmermann, T	en
dc.contributor.author	Zohrabyan, H	en
dc.contributor.author	Zomer, F	en
dc.date.accessioned	2014-03-01T01:57:28Z
dc.date.available	2014-03-01T01:57:28Z
dc.date.issued	2008	en
dc.identifier.issn	0370-2693	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28429
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	LIQUID ARGON CALORIMETER	en
dc.subject.other	HADRON-COLLISIONS	en
dc.subject.other	CROSS-SECTIONS	en
dc.subject.other	SIMULATIONS	en
dc.subject.other	CALIBRATION	en
dc.subject.other	SCATTERING	en
dc.subject.other	GENERATOR	en
dc.subject.other	ELECTRONS	en
dc.title	Multi-lepton production at high transverse momenta in ep collisions at HERA	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	Processes leading to a final state with at least two high transverse momentum leptons (electrons or muons) are studied using the full e(+/-) p data sample collected by the H1 experiment at HERA. The data correspond to an integrated luminosity of 463 pb(-1). Di-lepton and tri-lepton event classes are investigated. Cross sections of the production of e(+)e(-) and mu(+)mu(-) pairs are derived in a restricted phase space dominated by photon-photon collisions. In general, good agreement is found with Standard Model predictions. Events are observed with a total scalar sum of lepton transverse momenta above 100 GeV where the Standard Model expectation is low. In this region, combining di-lepton and tri-lepton classes, five events are observed in e(+) p collisions, compared to a Standard Model expectation of 0.96 +/- 0.12, while no such event is observed in e(-) p data for 0.64 +/- 0.09 expected. (C) 2008 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	PHYSICS LETTERS B	en
dc.identifier.isi	ISI:000260480300004	en
dc.identifier.volume	668	en
dc.identifier.issue	4	en
dc.identifier.spage	268	en
dc.identifier.epage	276	en