Phys. Rev. Lett.
89,
041802
(2002)
[7 pages]
Search for New Physics in Photon-Lepton Events in pp̅ Collisions at √s = 1.8TeV
D. Acosta et al.
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D. Acosta1, T. Affolder2, H. Akimoto3, M. G. Albrow4, D. Ambrose5, D. Amidei6, K. Anikeev7, J. Antos8, G. Apollinari4, T. Arisawa3, A. Artikov9, T. Asakawa10, W. Ashmanskas11, F. Azfar12, P. Azzi-Bacchetta13, N. Bacchetta13, H. Bachacou2, W. Badgett4, S. Bailey14, P. de Barbaro15, A. Barbaro-Galtieri2, V. E. Barnes16, B. A. Barnett17, S. Baroiant18, M. Barone19, G. Bauer7, F. Bedeschi20, S. Belforte21, W. H. Bell22, G. Bellettini20, J. Bellinger23, D. Benjamin24, J. Bensinger25, A. Beretvas4, J. P. Berge4, J. Berryhill11, A. Bhatti26, M. Binkley4, M. Bishai4, D. Bisello13, R. E. Blair27, C. Blocker25, K. Bloom6, B. Blumenfeld17, S. R. Blusk15, A. Bocci26, A. Bodek15, G. Bolla16, Y. Bonushkin28, D. Bortoletto16, J. Boudreau29, A. Brandl30, S. van den Brink17, C. Bromberg31, M. Brozovic24, E. Brubaker2, N. Bruner30, J. Budagov9, H. S. Budd15, K. Burkett14, G. Busetto13, A. Byon-Wagner4, K. L. Byrum27, S. Cabrera24, P. Calafiura2, M. Campbell6, W. Carithers2, D. Carlsmith23, J. Carlson6, W. Caskey18, A. Castro32, D. Cauz21, A. Cerri20, A. W. Chan8, P. S. Chang8, P. T. Chang8, J. Chapman6, C. Chen5, Y. C. Chen8, M.-T. Cheng8, M. Chertok18, G. Chiarelli20, I. Chirikov-Zorin9, G. Chlachidze9, F. Chlebana4, L. Christofek33, M. L. Chu8, J. Y. Chung34, W.-H. Chung23, Y. S. Chung15, C. I. Ciobanu34, A. G. Clark35, A. P. Colijn4, A. Connolly2, M. Convery26, J. Conway36, M. Cordelli19, J. Cranshaw37, R. Culbertson4, D. Dagenhart38, S. D'Auria22, S. Dell'Agnello19, M. Dell'Orso20, L. Demortier26, M. Deninno32, F. DeJongh4, S. Demers15, P. F. Derwent4, T. Devlin36, J. R. Dittmann4, A. Dominguez2, S. Donati20, J. Done39, M. D'Onofrio20, T. Dorigo14, I. Dunietz4, N. Eddy33, K. Einsweiler2, J. E. Elias4, E. Engels, Jr.29, R. Erbacher4, D. Errede33, S. Errede33, Q. Fan15, H.-C. Fang2, R. G. Feild40, J. P. Fernandez4, C. Ferretti20, R. D. Field1, I. Fiori32, B. Flaugher4, G. W. Foster4, M. Franklin14, J. Freeman4, J. Friedman7, H. J. Frisch11, Y. Fukui41, I. Furic7, S. Galeotti20, A. Gallas42, M. Gallinaro26, T. Gao5, M. Garcia-Sciveres2, A. F. Garfinkel16, P. Gatti13, C. Gay40, D. W. Gerdes6, E. Gerstein43, P. Giannetti20, K. Giolo16, V. Glagolev9, D. Glenzinski4, M. Gold30, J. Goldstein4, I. Gorelov30, A. T. Goshaw24, Y. Gotra29, K. Goulianos26, C. Green16, G. Grim18, P. Gris4, C. Grosso-Pilcher11, M. Guenther16, G. Guillian6, J. Guimaraes da Costa14, R. M. Haas1, C. Haber2, S. R. Hahn4, C. Hall14, T. Handa44, R. Handler23, F. Happacher19, K. Hara10, A. D. Hardman16, R. M. Harris4, F. Hartmann45, K. Hatakeyama26, J. Hauser28, J. Heinrich5, A. Heiss45, M. Herndon17, C. Hill18, A. Hocker15, K. D. Hoffman11, R. Hollebeek5, L. Holloway33, B. T. Huffman12, R. Hughes34, J. Huston31, J. Huth14, H. Ikeda10, J. Incandela4, G. Introzzi20, A. Ivanov15, J. Iwai3, Y. Iwata44, E. James6, M. Jones5, U. Joshi4, H. Kambara35, T. Kamon39, T. Kaneko10, M. Karagoz Unel42, K. Karr38, S. Kartal4, H. Kasha40, Y. Kato46, T. A. Keaffaber16, K. Kelley7, M. Kelly6, R. D. Kennedy4, D. Khazins24, T. Kikuchi10, B. Kilminster15, B. J. Kim47a,47b,47c, D. H. Kim47a,47b,47c, H. S. Kim33, M. J. Kim43, S. B. Kim47a,47b,47c, S. H. Kim10, Y. K. Kim2, M. Kirby24, M. Kirk25, L. Kirsch25, S. Klimenko1, P. Koehn34, K. Kondo3, J. Kongisberg1, A. Korn7, A. Korytov1, E. Kovacs27, J. Kroll5, M. Kruse24, V. Krutelyov39, S. E. Kuhlmann27, K. Kurino44, T. Kuwabara10, A. T. Laasanen16, N. Lai11, S. Lami26, S. Lammel4, J. Lancaster24, M. Lancaster2, R. Lander18, A. Lath36, G. Latino30, T. LeCompte27, K. Lee37, S. W. Lee39, S. Leone20, J. D. Lewis4, M. Lindgren28, T. M. Liss33, D. O. Litvintsev4, J. B. Liu15, T. Liu4, Y. C. Liu8, O. Lobban37, N. S. Lockyer5, J. Loken12, M. Loreti13, D. Lucchesi13, P. Lukens4, S. Lusin23, L. Lyons12, J. Lys2, P. McIntyre39, R. Madrak14, K. Maeshima4, P. Maksimovic14, L. Malferrari32, G. Manca12, M. Mangano20, M. Mariotti13, G. Martignon13, A. Martin40, V. Martin42, J. A. J. Matthews30, P. Mazzanti32, K. S. McFarland15, M. Menguzzato13, A. Menzione20, P. Merkel4, C. Mesropian26, A. Meyer4, T. Miao4, J. S. Miller6, R. Miller31, H. Minato10, S. Miscetti19, M. Mishina41, G. Mitselmakher1, Y. Miyazaki46, N. Moggi32, E. Moore30, R. Moore6, Y. Morita41, T. Moulik16, A. Mukherjee4, M. Mulhearn7, T. Muller45, A. Munar20, P. Murat4, S. Murgia31, J. Nachtman28, V. Nagaslaev37, S. Nahn40, H. Nakada10, I. Nakano44, C. Nelson4, T. Nelson4, C. Neu34, D. Neuberger45, C. Newman-Holmes4, C.-Y. P. Ngan7, H. Niu25, L. Nodulman27, A. Nomerotski1, S. H. Oh24, Y. D. Oh47a,47b,47c, T. Ohmoto44, T. Ohsugi44, R. Oishi10, T. Okusawa46, J. Olsen23, W. Orejudos2, C. Pagliarone20, F. Palmonari20, R. Paoletti20, V. Papadimitriou37, D. Partos25, J. Patrick4, G. Pauletta21, C. Paus7, M. Paulini43, D. Pellett18, L. Pescara13, T. J. Phillips24, G. Piacentino20, K. T. Pitts33, A. Pompos16, G. Pope29, T. Pratt12, F. Prokoshin9, J. Proudfoot27, F. Ptohos19, O. Pukhov9, G. Punzi20, A. Rakitine7, F. Ratnikov36, D. Reher2, A. Reichold12, P. Renton12, A. Ribon13, W. Riegler14, F. Rimondi32, L. Ristori20, M. Riveline48, W. J. Robertson24, T. Rodrigo49, S. Rolli38, L. Rosenson7, R. Roser4, R. Rossin13, C. Rott16, A. Roy16, A. Ruiz49, A. Safonov18, R. St. Denis22, W. K. Sakumoto15, D. Saltzberg28, C. Sanchez34, A. Sansoni19, L. Santi21, H. Sato10, P. Savard48, A. Savoy-Navarro4, P. Schlabach4, E. E. Schmidt4, M. P. Schmidt40, M. Schmitt42, L. Scodellaro13, A. Scott28, A. Scribano20, A. Sedov16, S. Segler4, S. Seidel30, Y. Seiya10, A. Semenov9, F. Semeria32, T. Shah7, M. D. Shapiro2, P. F. Shepard29, T. Shibayama10, M. Shimojima10, M. Shochet11, A. Sidoti13, J. Siegrist2, A. Sill37, P. Sinervo48, P. Singh33, A. J. Slaughter40, K. Sliwa38, C. Smith17, F. D. Snider4, A. Solodsky26, J. Spalding4, T. Speer35, M. Spezziga37, P. Sphicas7, L. Spiegel4, F. Spinella20, M. Spiropulu11, J. Steele23, A. Stefanini20, J. Strologas33, F. Strumia35, D. Stuart4, K. Sumorok7, T. Suzuki10, T. Takano46, R. Takashima44, K. Takikawa10, P. Tamburello24, M. Tanaka10, B. Tannenbaum28, M. Tecchio6, P. K. Teng8, K. Terashi26, R. J. Tesarek4, S. Tether7, A. S. Thompson22, E. Thomson34, R. Thurman-Keup27, P. Tipton15, S. Tkaczyk4, D. Toback39, K. Tollefson15, A. Tollestrup4, D. Tonelli20, M. Tonnesmann31, H. Toyoda46, W. Trischuk48, J. F. de Troconiz14, J. Tseng7, D. Tsybychev1, N. Turini20, F. Ukegawa10, T. Vaiciulis15, J. Valls36, E. Vataga20, S. Vejcik, III4, G. Velev4, G. Veramendi2, R. Vidal4, I. Vila49, R. Vilar49, I. Volobouev2, M. von der Mey28, D. Vucinic7, R. G. Wagner27, R. L. Wagner4, W. Wagner45, N. B. Wallace36, Z. Wan36, C. Wang24, M. J. Wang8, S. M. Wang1, B. Ward22, S. Waschke22, T. Watanabe10, D. Waters12, T. Watts36, R. Webb39, M. Webber2, H. Wenzel45, W. C. Wester, III4, A. B. Wicklund27, E. Wicklund4, T. Wilkes18, H. H. Williams5, P. Wilson4, B. L. Winer34, D. Winn6, S. Wolbers4, D. Wolinski6, J. Wolinski31, S. Wolinski6, S. Worm36, X. Wu35, J. Wyss20, U. K. Yang11, W. Yao2, G. P. Yeh4, P. Yeh8, J. Yoh4, C. Yosef31, T. Yoshida46, I. Yu47a,47b,47c, S. Yu5, Z. Yu40, J. C. Yun4, A. Zanetti21, and F. Zetti2
1University of Florida, Gainesville, Florida 32611
2Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720
3Waseda University, Tokyo 169, Japan
4Fermi National Accelerator Laboratory, Batavia, Illinois 60510
5University of Pennsylvania, Philadelphia, Pennsylvania 19104
6University of Michigan, Ann Arbor, Michigan 48109
7Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
8Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China
9Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
10University of Tsukuba, Tsukuba, Ibaraki 305, Japan
11Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
12University of Oxford, Oxford OX1 3RH, United Kingdom
13Universita di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy
14Harvard University, Cambridge, Massachusetts 02138
15University of Rochester, Rochester, New York 14627
16Purdue University, West Lafayette, Indiana 47907
17The Johns Hopkins University, Baltimore, Maryland 21218
18University of California at Davis, Davis, California 95616
19Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
20Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
21Istituto Nazionale di Fisica Nucleare, University of Trieste/Udine, Italy
22Glasgow University, Glasgow G12 8QQ, United Kingdom
23University of Wisconsin, Madison, Wisconsin 53706
24Duke University, Durham, North Carolina 27708
25Brandeis University, Waltham, Massachusetts 02254
26Rockefeller University, New York, New York 10021
27Argonne National Laboratory, Argonne, Illinois 60439
28University of California at Los Angeles, Los Angeles, California 90024
29University of Pittsburgh, Pittsburgh, Pennsylvania 15260
30University of New Mexico, Albuquerque, New Mexico 87131
31Michigan State University, East Lansing, Michigan 48824
32Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy
33University of Illinois, Urbana, Illinois 61801
34The Ohio State University, Columbus, Ohio 43210
35University of Geneva, CH-1211 Geneva 4, Switzerland
36Rutgers University, Piscataway, New Jersey 08855
37Texas Tech University, Lubbock, Texas 79409
38Tufts University, Medford, Massachusetts 02155
39Texas A&M University, College Station, Texas 77843
40Yale University, New Haven, Connecticut 06520
41High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan
42Northwestern University, Evanston, Illinois 60208
43Carnegie Mellon University, Pittsburgh, Pennsylvania 15218
44Hiroshima University, Higashi-Hiroshima 724, Japan
45Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
46Osaka City University, Osaka 588, Japan
47aCenter for High Energy Physics: Kyungpook National University, Taegu 702-701,
47bSeoul National University, Seoul 151-742,
47cand SungKyunKwan University, Suwon 440-746, Korea
48Institute of Particle Physics, University of Toronto, Toronto M5S 1A7, Canada
49Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
Received 25 February 2002; published 9 July 2002
We present the results of a search in pp̅ collisions at √s = 1.8TeV for anomalous production of events containing a photon and a lepton ( e or μ), both with large transverse energy, using 86pb-1 of data collected with the Collider Detector at Fermilab during the 1994–1995 collider run at the Fermilab Tevatron. The presence of large missing transverse energy ( ET), additional photons, or additional leptons in these events is also analyzed. The results are consistent with standard model expectations, with the possible exception of photon-lepton events with large ET, for which the observed total is 16 events and the expected mean total is 7.6±0.7 events.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.041802
DOI:
10.1103/PhysRevLett.89.041802
PACS:
13.85.Rm, 12.60.Jv, 13.85.Qk, 14.80.Ly
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