Accès ouvert déclaré
2003
article
Isolated electrons and muons in events with missing transverse momentum at HERA
H1 Collaboration, V. Andreev, et al., H. Grassler, T. Greenshaw, G. Grindhammer, D. Haidt, L. Hajduk, J. Haller, B. Heinemann, G. Heinzelmann, R. C. W. Henderson, H. Henschel, J. Becker, O. Henshaw, R. Heremans, G. Herrera, I. Herynek, M. Hildebrandt, M. Hilgers, K. H. Hiller, J. Hladký, P. Hoting, D. Hoffmann, M. Beckingham, R. Horisberger, A. Hovhannisyan, M. Ibbotson, C. Issever, M. Jacquet, M. Jaffre, L. Janauschek, X. Janssen, V. Jemanov, L. Jönsson, A. Beglarian, C. Johnson, D. P. Johnson, M. A. S. Jones, H. Jung, D. Kant, M. Kapichine, M. Karlsson, O. Karschnick, J. Katzy, F. Keil, O. Behnke, N. Keller, J. Kennedy, I. R. Kenyon, C. Kiesling, P. Kjellberg, M. Klein, C. Kleinwort, T. Kluge, G. Knies, B. Koblitz, A. Belousov, S. D. Kolya, V. Korbel, P. Kostka, R. Koutouev, A. Koutov, J. Kroseberg, K. Kruger, J. Kückens, T. Kuhr, M. P. J. Landon, C. Berger, W. Lange, T. Lastovicka, P. Laycock, A. Lebedev, B. Leißner, R. Lemrani, V. Lendermann, S. Levonian, B. List, E.Lobodzinska, T. Berndt, B. Lobodzinski, N. Loktionova, V. Lubimov, S. Lüders, D. Luke, L. Lytkin, N. Malden, E. Malinovski, S. Mangano, P. Marage, J. C. Bizot, J. Marks, R. Marshall, H.-U. Martyn, J. Martyniak, S. J. Maxfield, D. Meer, A. Mehta, K. Meier, A. B. Meyer, H. Meyer, J. Bohme, J. Meyer, S. Michine, S. Mikocki, D. Milstead, S. Mohrdieck, M. N. Mondragon, F. Moreau, A. Morozov, J. V. Morris, K. Muller, B. Andrieu, V. Boudry, P. Murin, V. Nagovizin, B. Naroska, J. Naumann, T. Naumann, P. R. Newman, F. Niebergall, C. Niebuhr, G. Nowak, M. Nozicka, J. Bracinik, B. Olivier, J. E. Olsson, D. Ozerov, V. Panassik, C. Pascaud, G. D. Patel, M. Peez, E. Perez, A. Petrukhin, J.P. Phillips, W. Braunschweig, D. Pitzl, R. Poschl, I. Potachnikova, B. Povh, J. Rauschenberger, P. Reimer, B. Reisert, C. Risler, E. Rizvi, P. Robmann, V. Brisson, R. Roosen, A. Rostovtsev, S. Rusakov, K. Rybicki, D. P. C. Sankey, E. Sauvan, S. Schätzel, J. Scheins, F.-P. Schilling, P. Schleper, H.-B. Bröker, D. Schmidt, S. Schmidt, S. Schmitt, M. Schneider, L. Schoeffel, A. Schoning, T. Schorner-Sadenius, V. Schroder, H. C. Schultz-Coulon, D. P. Brown, C. Schwanenberger, K. Sedlak, F. Sefkow, I. Sheviakov, L. N. Shtarkov, Y. Sirois, T. Sloan, P. Smirnov, Y. Soloviev, D. South, D. Bruncko, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, B. Stella, J. Stiewe, I. Strauch, U. Straumann, S. Tchetchelnitski, G. Thompson, F. W. Busser, P. D. Thompson, F. Tomasz, D. Traynor, P. Truol, G. Tsipolitis, I. Tsurin, J. Turnau, J. E. Turney, E. Tzamariudaki, A. Uraev, A. Bunyatyan, Martin Urban, A. Usik, S. Valkar, A. Valkarova, C. Vallée, P. Van Mechelen, A. V. Trevino, S. Vassiliev, Y. Vazdik, C. Veelken, A. Burrage, A. Vest, A. Vichnevski, V. Volchinski, K. Wacker, J. Wagner, R. Wallny, B. Waugh, G. Weber, R. Weber, D. Wegener, T. Anthonis, G. Buschhorn, C. Werner, N. Werner, M. Wessels, B. Wessling, M. Winde, G. G. Winter, C. Wissing, E.-E. Woehrling, E. Wunsch, A.C. Wyatt, L. Bystritskaya, J. Zacek, J. Zalesak, Z. Zhang, A. Zhokin, F. Zomer, M. zur Nedden, A. J. Campbell, S. Caron, F. Cassol-Brunner, V. Chekelian, D. Clarke, C. Collard, J. G. Contreras, Y.R. Coppens, A. Astvatsatourov, J. A. Coughlan, M. C. Cousinou, B. E. Cox, G. Cozzika, J. Cvach, J. B. Dainton, W. D. Dau, K. Daum, M. Davidsson, B. Delcourt, A. Babaev, N. (N.) Delerue, R. Demirchyan, A. De Roeck, E. A. De Wolf, C. Diaconu, J. Dingfelder, P. Dixon, V. Dodonov, J. D. Dowell, A. Dubak, J. Bähr, C. Duprel, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, M. Ellerbrock, E. Elsen, Martin Erdmann, P. Baranov, W. Erdmann, P.J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Ferencei, S. Ferron, M. Fleischer, P. Fleischmann, Y.H. Fleming, E. Barrelet, G. Flucke, G. Flügge, A. Fomenko, I. Foresti, J. Formanek, G. Franke, G. Frising, E. Gabathuler, K. Gabathuler, J. Garvey, W. Bartel, J. Gassner, J. Gayler, R. Gerhards, C. Gerlich, S. Ghazaryan, L. Goerlich, N. Gogitidze, S. Gorbounov, C. Grab, V. Grabski
0Citations signalées, ce qui n’est pas une note de qualité
0Institutions déclarées
0Pays d’affiliation déclarés
Le résumé fourni par la source
A search for events with a high energy isolated electron or muon and missing transverse momentum has been performed at the electron-proton collider HERA using an integrated luminosity of 13.6 pb-1 in e-p scattering and 104.7 pb-1 in e+p scattering. Within the Standard Model such events are expected to be mainly due to W boson production with subsequent leptonic decay. In e-p interactions one event is observed in the electron channel and none in the muon channel, consistent with the expectation of the Standard Model. In the e+p data a total of 18 events are seen in the electron and muon channels compared to an expectation of 12.4 \\pm 1.7 dominated by W production (9.4 \\pm 1.6). Whilst the overall observed number of events is broadly in agreement with the number predicted by the Standard Model, there is an excess of events with transverse momentum of the hadronic system greater than 25 GeV with 10 events found compared to 2.9 \\pm 0.5 expected. The results are used to determine the cross section for events with an isolated electron or muon and missing transverse momentum.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
Aucun DOI disponible pour le contrôle Crossref.
Les sujets associés
Particle physics theoretical and experimental studiesComputational Physics and Python ApplicationsHigh-Energy Particle Collisions Research