Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb(-1). The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e(+)p collision data with a scalar sum of the lepton transverse momenta above 100 GeV while 1.94 +/- 0.17 events are expected. Such events are not observed in e(-)p collisions for which 1.19 +/- 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.

Multi-leptons with high transverse momentum at HERA / Aaron, Fd; Abramowicz, H; Abt, I; Adamczyk, L; Adamus, M; Martin, Ma; Alexa, C; Alimujiang, K; Andreev, V; Antonelli, S; Antonioli, P; Antonov, A; Antunovic, B; Arneodo, M; Asmone, A; Aushev, V; Bachynska, O; Backovic, S; Baghdasaryan, A; Bamberger, A; Barakbaev, An; Barbagli, G; Bari, G; Barreiro, F; Barrelet, E; Bartel, W; Bartsch, D; Basile, M; Begzsuren, K; Behnke, O; Behr, J; Behrens, U; Bellagamba, L; Belousov, A; Bertolin, A; Bhadra, S; Bindi, M; Bizot, Jc; Blohm, C; Bold, T; Boos, Eg; Borodin, M; Borras, K; Boscherini, D; Bot, D; Boudry, V; Boutle, Sk; BOZOVIC JELISAVCIC, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Brock, I; Brownson, E; Brugnera, R; Brummer, N; Bruncko, D; Bruni, A; Bruni, G; Brzozowska, B; Bunyatyan, A; Buschhorn, G; Bussey, Pj; Butterworth, Jm; Bylsma, B; Bystritskaya, L; Caldwell, A; Campbell, Aj; Avila, Kbc; Capua, M; Carlin, R; CASSOL BRUNNER, F; Catterall, Cd; Cerny, K; Cerny, V; Chekanov, S; Chekelian, V; Cholewa, A; Chwastowski, J; Ciborowski, J; Ciesielski, R; Cifarelli, L; Cindolo, F; Contin, A; Contreras, Jg; COOPER SARKAR, Am; Coppola, N; Corradi, M; Corriveau, F; Costa, M; Coughlan, Ja; Cozzika, G; Cvach, J; D'Agostini, Giulio; Dainton, Jb; DAL CORSO, F; Daum, K; Deak, M; DE BOER, Y; DE FAVEREAU, J; Delcourt, B; DEL DEGAN, M; DEL PESO, J; Delvax, J; Dementiev, Rk; DE PASQUALE, S; Derrick, M; Devenish, Rce; DE WOLF, Ea; Diaconu, C; Dobur, D; Dodonov, V; Dolgoshein, Ba; Dossanov, A; Doyle, At; Drugakov, V; Dubak, A; Durkin, Ls; Dusini, S; Eckerlin, G; Efremenko, V; Egli, S; Eisenberg, Y; Eliseev, A; Elsen, E; Ermolov, Pf; Eskreys, A; Falkiewicz, A; Fang, S; Favart, L; Fazio, S; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Ferrando, J; Ferrero, Mi; Figiel, J; Fischer, Dj; Fleischer, M; Fomenko, A; Forrest, M; Foster, B; Fourletov, S; Gabathuler, E; Galas, A; Gallo, E; Garfagnini, A; Gayler, J; Geiser, A; Ghazaryan, S; Gialas, I; Gladilin, Lk; Gladkov, D; Glasman, C; Glazov, A; Glushkov, I; Goerlich, L; Gogitidze, N; Golubkov, Ya; Gottlicher, P; Gouzevitch, M; Grab, C; GRABOWSKA BOLD, I; Grebenyuk, J; Greenshaw, T; Gregor, I; Grell, Br; Grigorescu, G; Grindhammer, G; Grzelak, G; Gwenlan, C; Haas, T; Habib, S; Haidt, D; Hain, W; Hamatsu, R; Hart, Jc; Hartmann, H; Hartner, G; Helebrant, C; Henderson, Rcw; Hennekemper, E; Henschel, H; Herbst, M; Herrera, G; Hildebrandt, M; Hilger, E; Hiller, Kh; Hochman, D; Hoffmann, D; Holm, U; Hori, R; Horisberger, R; Horton, K; Hreus, T; Huttmann, A; Iacobucci, G; Ibrahim, Za; Iga, Y; Ingbir, R; Ishitsuka, M; Jacquet, M; Jakob, Hp; Janssen, Me; Janssen, X; Januschek, F; Jimenez, M; Jones, Tw; Jonsson, L; Jung, Aw; Jung, H; Jungst, M; Kadenko, I; Kahle, B; Kamaluddin, B; Kananov, S; Kanno, T; Kapichine, M; Karshon, U; Karstens, F; Katkov, Ii; Katzy, J; Kaur, M; Kaur, P; Kenyon, Ir; Keramidas, A; Khein, La; Kiesling, C; Kim, Jy; Kisielewska, D; Kitamura, S; Klanner, R; Klein, M; Klein, U; Kleinwort, C; Kluge, T; Knutsson, A; Koffeman, E; Kogler, R; Kollar, D; Kooijman, P; Korzhavina, Ia; Kostka, P; Kotanski, A; Kotz, U; Kowalski, H; Kraemer, M; Krastev, K; Kretzschmar, J; Kropivnitskaya, A; Kruger, K; Kulinski, P; Kuprash, O; Kutak, K; Kuze, M; Kuzmin, Va; Landon, Mpj; Lange, W; LASTOVICKA MEDIN, G; Laycock, P; Lebedev, A; Lee, A; Leibenguth, G; Lendermann, V; Levchenko, Bb; Levonian, S; Levy, A; Li, G; Libov, V; Limentani, S; Ling, Ty; Lipka, K; Liptaj, A; Lisovyi, M; List, B; List, J; Lobodzinska, E; Lohmann, W; Lohr, B; Lohrmann, E; Loizides, Jh; Loktionova, N; Long, Kr; Longhin, A; Lontkovskyi, D; LOPEZ FERNANDEZ, R; Lubimov, V; Lukasik, J; Lukina, Oy; Luzniak, P; Lytkin, L; Maeda, J; Magill, S; Makankine, A; Makarenko, I; Malinovski, E; Malka, J; Mankel, R; Marage, P; Margotti, A; Marini, G; Marti, L; Martin, Jf; Martyn, Hu; Mastroberardino, A; Matsumoto, T; Mattingly, Mck; Maxfield, Sj; Mehta, A; MELZER PELLMANN, Ia; Meyer, Ab; Meyer, H; Meyer, H; Meyer, J; Michels, V; Miglioranzi, S; Mikocki, S; MILCEWICZ MIKA, I; Idris, Fm; Monaco, V; Montanari, A; Moreau, F; Morozov, A; Morris, Jd; Morris, Jv; Mozer, Mu; Mudrinic, M; Muller, K; Murin, P; Musgrave, B; Nagano, K; Namsoo, T; Nania, R; Naumann, T; Newman, Pr; Nicholass, D; Niebuhr, C; Nigro, Andrea; Nikiforov, A; Ning, Y; Noor, U; Notz, D; Nowak, G; Nowak, K; Nowak, Rj; Nozicka, M; NUNCIO QUIROZ, Ae; Oh, By; Okazaki, N; Oliver, K; Olivier, B; Olkiewicz, K; Olsson, Je; Osman, S; Ota, O; Ozerov, D; Palichik, V; Panagoulias, I; Pandurovic, M; Papadopoulou, T; Papageorgiu, K; Parenti, A; Pascaud, C; Patel, Gd; Paul, E; Pawlak, Jm; Pawlik, B; Pejchal, O; Pelfer, Pg; Pellegrino, A; Perez, E; Perlanski, W; Perrey, H; Petrukhin, A; Picuric, I; Piec, S; Piotrzkowski, K; Pitzl, D; Placakythe, R; Plucinski, P; Pokorny, B; Pokrovskiy, Ns; Polifka, R; Polini, A; Povh, B; Preda, T; Proskuryakov, As; Przybycien, M; Radescu, V; Rahmat, Aj; Raicevic, N; Raspiareza, A; Raval, A; Ravdandorj, T; Reeder, Dd; Reimer, P; Reisert, B; Ren, Z; Repond, J; Ri, Yd; Rizvi, E; Robertson, A; Robmann, P; Roland, B; Roloff, P; Ron, E; Roosen, R; Rostovtsev, A; Rotaru, M; Rubinsky, I; Tabasco, Jer; Rurikova, Z; Rusakov, S; Ruspa, M; Sacchi, R; Salek, D; Samson, U; Sankey, Dpc; Sartorelli, G; Sauter, M; Sauvan, E; Savin, Aa; Saxon, Dh; Schioppa, M; Schlenstedt, S; Schleper, P; Schmidke, Wb; Schmitt, S; Schneekloth, U; Schoeffel, L; Schonberg, V; Schoning, A; SCHORNER SADENIUS, T; SCHULTZ COULON, Hc; Schwartz, J; Sciulli, F; Sefkow, F; SHAW WEST, Rn; Shcheglova, Lm; Shehzadi, R; Shimizu, S; Shtarkov, Ln; Shushkevich, S; Singh, I; Skillicorn, Io; Sloan, T; Slominski, W; Smiljanic, I; Smith, Wh; Sola, V; Solano, A; Soloviev, Y; Son, D; Sopicki, P; Sorokin, I; Sosnovtsev, V; South, D; Spaskov, V; Specka, A; Spiridonov, A; Stadie, H; Stanco, L; Staykova, Z; Steder, M; Stella, B; Stern, A; Stewart, Tp; Stifutkin, A; Stoicea, G; Stopa, P; Straumann, U; Suchkov, S; Sunar, D; Susinno, G; Suszycki, L; Sykora, T; Sztuk, J; Szuba, D; Szuba, J; Tapper, Ad; Tassi, E; Tchoulakov, V; Terron, J; Theedt, T; Thompson, G; Thompson, Pd; Tiecke, H; Tokushuku, K; Toll, T; Tomasz, F; Tomaszewska, J; Tran, Th; Traynor, D; Trinh, Tn; Truol, P; Tsakov, I; Tseepeldorj, B; Tsurugai, T; Turcato, M; Turnau, J; Tymieniecka, T; Urban, K; URIBE ESTRADA, C; Valkarovha, A; Vallee, C; VAN MECHELEN, P; Trevino, Av; Vazdik, Y; Vazquez, M; Verbytskyi, A; Vinokurova, S; Vlasov, Nn; Volchinski, V; Volynets, O; VON DEN DRIESCH, M; Walczak, R; Abdullah, Watw; Wegener, D; Whitmore, Jj; Whyte, J; Wiggers, L; Wing, M; Wissing, C; Wlasenko, M; Wolf, G; Wolfe, H; Wrona, K; Wunsch, E; YAGUES MOLINA, Ag; Yamada, S; Yamazaki, Y; Yoshida, R; Youngman, C; Zacek, J; Zalesak, J; Zarnecki, Af; Zawiejski, L; Zeuner, W; Zhang, Z; Zhautykov, Bo; Zhokin, A; Zhou, C; Zichichi, A; Zimmermann, T; Zohrabyan, H; Zolko, M; Zomer, F; Zotkin, Ds; Zus, R.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2009:10(2009), pp. 013-013. [10.1088/1126-6708/2009/10/013]

Multi-leptons with high transverse momentum at HERA

D'AGOSTINI, Giulio;NIGRO, Andrea;
2009

Abstract

Events with at least two high transverse momentum leptons (electrons or muons) are studied using the H1 and ZEUS detectors at HERA with an integrated luminosity of 0.94 fb(-1). The observed numbers of events are in general agreement with the Standard Model predictions. Seven di- and tri-lepton events are observed in e(+)p collision data with a scalar sum of the lepton transverse momenta above 100 GeV while 1.94 +/- 0.17 events are expected. Such events are not observed in e(-)p collisions for which 1.19 +/- 0.12 are predicted. Total visible and differential di-electron and di-muon photoproduction cross sections are extracted in a restricted phase space dominated by photon-photon collisions.
2009
lepton-nucleon scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Multi-leptons with high transverse momentum at HERA / Aaron, Fd; Abramowicz, H; Abt, I; Adamczyk, L; Adamus, M; Martin, Ma; Alexa, C; Alimujiang, K; Andreev, V; Antonelli, S; Antonioli, P; Antonov, A; Antunovic, B; Arneodo, M; Asmone, A; Aushev, V; Bachynska, O; Backovic, S; Baghdasaryan, A; Bamberger, A; Barakbaev, An; Barbagli, G; Bari, G; Barreiro, F; Barrelet, E; Bartel, W; Bartsch, D; Basile, M; Begzsuren, K; Behnke, O; Behr, J; Behrens, U; Bellagamba, L; Belousov, A; Bertolin, A; Bhadra, S; Bindi, M; Bizot, Jc; Blohm, C; Bold, T; Boos, Eg; Borodin, M; Borras, K; Boscherini, D; Bot, D; Boudry, V; Boutle, Sk; BOZOVIC JELISAVCIC, I; Bracinik, J; Brandt, G; Brinkmann, M; Brisson, V; Brock, I; Brownson, E; Brugnera, R; Brummer, N; Bruncko, D; Bruni, A; Bruni, G; Brzozowska, B; Bunyatyan, A; Buschhorn, G; Bussey, Pj; Butterworth, Jm; Bylsma, B; Bystritskaya, L; Caldwell, A; Campbell, Aj; Avila, Kbc; Capua, M; Carlin, R; CASSOL BRUNNER, F; Catterall, Cd; Cerny, K; Cerny, V; Chekanov, S; Chekelian, V; Cholewa, A; Chwastowski, J; Ciborowski, J; Ciesielski, R; Cifarelli, L; Cindolo, F; Contin, A; Contreras, Jg; COOPER SARKAR, Am; Coppola, N; Corradi, M; Corriveau, F; Costa, M; Coughlan, Ja; Cozzika, G; Cvach, J; D'Agostini, Giulio; Dainton, Jb; DAL CORSO, F; Daum, K; Deak, M; DE BOER, Y; DE FAVEREAU, J; Delcourt, B; DEL DEGAN, M; DEL PESO, J; Delvax, J; Dementiev, Rk; DE PASQUALE, S; Derrick, M; Devenish, Rce; DE WOLF, Ea; Diaconu, C; Dobur, D; Dodonov, V; Dolgoshein, Ba; Dossanov, A; Doyle, At; Drugakov, V; Dubak, A; Durkin, Ls; Dusini, S; Eckerlin, G; Efremenko, V; Egli, S; Eisenberg, Y; Eliseev, A; Elsen, E; Ermolov, Pf; Eskreys, A; Falkiewicz, A; Fang, S; Favart, L; Fazio, S; Fedotov, A; Felst, R; Feltesse, J; Ferencei, J; Ferrando, J; Ferrero, Mi; Figiel, J; Fischer, Dj; Fleischer, M; Fomenko, A; Forrest, M; Foster, B; Fourletov, S; Gabathuler, E; Galas, A; Gallo, E; Garfagnini, A; Gayler, J; Geiser, A; Ghazaryan, S; Gialas, I; Gladilin, Lk; Gladkov, D; Glasman, C; Glazov, A; Glushkov, I; Goerlich, L; Gogitidze, N; Golubkov, Ya; Gottlicher, P; Gouzevitch, M; Grab, C; GRABOWSKA BOLD, I; Grebenyuk, J; Greenshaw, T; Gregor, I; Grell, Br; Grigorescu, G; Grindhammer, G; Grzelak, G; Gwenlan, C; Haas, T; Habib, S; Haidt, D; Hain, W; Hamatsu, R; Hart, Jc; Hartmann, H; Hartner, G; Helebrant, C; Henderson, Rcw; Hennekemper, E; Henschel, H; Herbst, M; Herrera, G; Hildebrandt, M; Hilger, E; Hiller, Kh; Hochman, D; Hoffmann, D; Holm, U; Hori, R; Horisberger, R; Horton, K; Hreus, T; Huttmann, A; Iacobucci, G; Ibrahim, Za; Iga, Y; Ingbir, R; Ishitsuka, M; Jacquet, M; Jakob, Hp; Janssen, Me; Janssen, X; Januschek, F; Jimenez, M; Jones, Tw; Jonsson, L; Jung, Aw; Jung, H; Jungst, M; Kadenko, I; Kahle, B; Kamaluddin, B; Kananov, S; Kanno, T; Kapichine, M; Karshon, U; Karstens, F; Katkov, Ii; Katzy, J; Kaur, M; Kaur, P; Kenyon, Ir; Keramidas, A; Khein, La; Kiesling, C; Kim, Jy; Kisielewska, D; Kitamura, S; Klanner, R; Klein, M; Klein, U; Kleinwort, C; Kluge, T; Knutsson, A; Koffeman, E; Kogler, R; Kollar, D; Kooijman, P; Korzhavina, Ia; Kostka, P; Kotanski, A; Kotz, U; Kowalski, H; Kraemer, M; Krastev, K; Kretzschmar, J; Kropivnitskaya, A; Kruger, K; Kulinski, P; Kuprash, O; Kutak, K; Kuze, M; Kuzmin, Va; Landon, Mpj; Lange, W; LASTOVICKA MEDIN, G; Laycock, P; Lebedev, A; Lee, A; Leibenguth, G; Lendermann, V; Levchenko, Bb; Levonian, S; Levy, A; Li, G; Libov, V; Limentani, S; Ling, Ty; Lipka, K; Liptaj, A; Lisovyi, M; List, B; List, J; Lobodzinska, E; Lohmann, W; Lohr, B; Lohrmann, E; Loizides, Jh; Loktionova, N; Long, Kr; Longhin, A; Lontkovskyi, D; LOPEZ FERNANDEZ, R; Lubimov, V; Lukasik, J; Lukina, Oy; Luzniak, P; Lytkin, L; Maeda, J; Magill, S; Makankine, A; Makarenko, I; Malinovski, E; Malka, J; Mankel, R; Marage, P; Margotti, A; Marini, G; Marti, L; Martin, Jf; Martyn, Hu; Mastroberardino, A; Matsumoto, T; Mattingly, Mck; Maxfield, Sj; Mehta, A; MELZER PELLMANN, Ia; Meyer, Ab; Meyer, H; Meyer, H; Meyer, J; Michels, V; Miglioranzi, S; Mikocki, S; MILCEWICZ MIKA, I; Idris, Fm; Monaco, V; Montanari, A; Moreau, F; Morozov, A; Morris, Jd; Morris, Jv; Mozer, Mu; Mudrinic, M; Muller, K; Murin, P; Musgrave, B; Nagano, K; Namsoo, T; Nania, R; Naumann, T; Newman, Pr; Nicholass, D; Niebuhr, C; Nigro, Andrea; Nikiforov, A; Ning, Y; Noor, U; Notz, D; Nowak, G; Nowak, K; Nowak, Rj; Nozicka, M; NUNCIO QUIROZ, Ae; Oh, By; Okazaki, N; Oliver, K; Olivier, B; Olkiewicz, K; Olsson, Je; Osman, S; Ota, O; Ozerov, D; Palichik, V; Panagoulias, I; Pandurovic, M; Papadopoulou, T; Papageorgiu, K; Parenti, A; Pascaud, C; Patel, Gd; Paul, E; Pawlak, Jm; Pawlik, B; Pejchal, O; Pelfer, Pg; Pellegrino, A; Perez, E; Perlanski, W; Perrey, H; Petrukhin, A; Picuric, I; Piec, S; Piotrzkowski, K; Pitzl, D; Placakythe, R; Plucinski, P; Pokorny, B; Pokrovskiy, Ns; Polifka, R; Polini, A; Povh, B; Preda, T; Proskuryakov, As; Przybycien, M; Radescu, V; Rahmat, Aj; Raicevic, N; Raspiareza, A; Raval, A; Ravdandorj, T; Reeder, Dd; Reimer, P; Reisert, B; Ren, Z; Repond, J; Ri, Yd; Rizvi, E; Robertson, A; Robmann, P; Roland, B; Roloff, P; Ron, E; Roosen, R; Rostovtsev, A; Rotaru, M; Rubinsky, I; Tabasco, Jer; Rurikova, Z; Rusakov, S; Ruspa, M; Sacchi, R; Salek, D; Samson, U; Sankey, Dpc; Sartorelli, G; Sauter, M; Sauvan, E; Savin, Aa; Saxon, Dh; Schioppa, M; Schlenstedt, S; Schleper, P; Schmidke, Wb; Schmitt, S; Schneekloth, U; Schoeffel, L; Schonberg, V; Schoning, A; SCHORNER SADENIUS, T; SCHULTZ COULON, Hc; Schwartz, J; Sciulli, F; Sefkow, F; SHAW WEST, Rn; Shcheglova, Lm; Shehzadi, R; Shimizu, S; Shtarkov, Ln; Shushkevich, S; Singh, I; Skillicorn, Io; Sloan, T; Slominski, W; Smiljanic, I; Smith, Wh; Sola, V; Solano, A; Soloviev, Y; Son, D; Sopicki, P; Sorokin, I; Sosnovtsev, V; South, D; Spaskov, V; Specka, A; Spiridonov, A; Stadie, H; Stanco, L; Staykova, Z; Steder, M; Stella, B; Stern, A; Stewart, Tp; Stifutkin, A; Stoicea, G; Stopa, P; Straumann, U; Suchkov, S; Sunar, D; Susinno, G; Suszycki, L; Sykora, T; Sztuk, J; Szuba, D; Szuba, J; Tapper, Ad; Tassi, E; Tchoulakov, V; Terron, J; Theedt, T; Thompson, G; Thompson, Pd; Tiecke, H; Tokushuku, K; Toll, T; Tomasz, F; Tomaszewska, J; Tran, Th; Traynor, D; Trinh, Tn; Truol, P; Tsakov, I; Tseepeldorj, B; Tsurugai, T; Turcato, M; Turnau, J; Tymieniecka, T; Urban, K; URIBE ESTRADA, C; Valkarovha, A; Vallee, C; VAN MECHELEN, P; Trevino, Av; Vazdik, Y; Vazquez, M; Verbytskyi, A; Vinokurova, S; Vlasov, Nn; Volchinski, V; Volynets, O; VON DEN DRIESCH, M; Walczak, R; Abdullah, Watw; Wegener, D; Whitmore, Jj; Whyte, J; Wiggers, L; Wing, M; Wissing, C; Wlasenko, M; Wolf, G; Wolfe, H; Wrona, K; Wunsch, E; YAGUES MOLINA, Ag; Yamada, S; Yamazaki, Y; Yoshida, R; Youngman, C; Zacek, J; Zalesak, J; Zarnecki, Af; Zawiejski, L; Zeuner, W; Zhang, Z; Zhautykov, Bo; Zhokin, A; Zhou, C; Zichichi, A; Zimmermann, T; Zohrabyan, H; Zolko, M; Zomer, F; Zotkin, Ds; Zus, R.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1126-6708. - 2009:10(2009), pp. 013-013. [10.1088/1126-6708/2009/10/013]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/361399
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