Phys. Rev. D
65,
052006
(2002)
[22 pages]
Searches for new physics in events with a photon and b-quark jet at CDF
T. Affolder et al. (CDF Collaboration)
Show All Authors/Affiliations
Hide All Authors/Affiliations
T. Affolder23, H. Akimoto45, A. Akopian37, M. G. Albrow11, P. Amaral8, D. Amidei25, K. Anikeev24, J. Antos1, G. Apollinari11, T. Arisawa45, A. Artikov9, T. Asakawa43, W. Ashmanskas8, F. Azfar30, P. Azzi-Bacchetta31, N. Bacchetta31, H. Bachacou23, S. Bailey16, P. de Barbaro36, A. Barbaro-Galtieri23, V. E. Barnes35, B. A. Barnett19, S. Baroiant5, M. Barone13, G. Bauer24, F. Bedeschi33, S. Belforte42, W. H. Bell15, G. Bellettini33, J. Bellinger46, D. Benjamin10, J. Bensinger4, A. Beretvas11, J. P. Berge11, J. Berryhill8, A. Bhatti37, M. Binkley11, D. Bisello31, M. Bishai11, R. E. Blair2, C. Blocker4, K. Bloom25, B. Blumenfeld19, S. R. Blusk36, A. Bocci37, A. Bodek36, W. Bokhari32, G. Bolla35, Y. Bonushkin6, D. Bortoletto35, J. Boudreau34, A. Brandl27, S. van den Brink19, C. Bromberg26, M. Brozovic10, E. Brubaker23, N. Bruner27, E. Buckley-Geer11, J. Budagov9, H. S. Budd36, K. Burkett16, G. Busetto31, A. Byon-Wagner11, K. L. Byrum2, S. Cabrera10, P. Calafiura23, M. Campbell25, W. Carithers23, J. Carlson25, D. Carlsmith46, W. Caskey5, A. Castro3, D. Cauz42, A. Cerri33, A. W. Chan1, P. S. Chang1, P. T. Chang1, J. Chapman25, C. Chen32, Y. C. Chen1, M.-T. Cheng1, M. Chertok5, G. Chiarelli33, I. Chirikov-Zorin9, G. Chlachidze9, F. Chlebana11, L. Christofek18, M. L. Chu1, Y. S. Chung36, C. I. Ciobanu28, A. G. Clark14, A. Connolly23, J. Conway38, M. Cordelli13, J. Cranshaw40, R. Cropp41, R. Culbertson11, D. Dagenhart44, S. D’Auria15, F. DeJongh11, S. Dell’Agnello13, M. Dell’Orso33, L. Demortier37, M. Deninno3, P. F. Derwent11, T. Devlin38, J. R. Dittmann11, A. Dominguez23, S. Donati33, J. Done39, M. D’Onofrio33, T. Dorigo16, N. Eddy18, K. Einsweiler23, J. E. Elias11, E. Engels, Jr.34, R. Erbacher11, D. Errede18, S. Errede18, Q. Fan36, R. G. Feild47, J. P. Fernandez11, C. Ferretti33, R. D. Field12, I. Fiori3, B. Flaugher11, G. W. Foster11, M. Franklin16, J. Freeman11, J. Friedman24, H. J. Frisch8, Y. Fukui22, I. Furic24, S. Galeotti33, A. Gallas16,*, M. Gallinaro37, T. Gao32, M. Garcia-Sciveres23, A. F. Garfinkel35, P. Gatti31, C. Gay47, D. W. Gerdes25, P. Giannetti33, V. Glagolev9, D. Glenzinski11, M. Gold27, J. Goldstein11, I. Gorelov27, A. T. Goshaw10, Y. Gotra34, K. Goulianos37, C. Green35, G. Grim5, P. Gris11, L. Groer38, C. Grosso-Pilcher8, M. Guenther35, G. Guillian25, J. Guimaraes da Costa16, R. M. Haas12, C. Haber23, S. R. Hahn11, C. Hall16, T. Handa17, R. Handler46, W. Hao40, F. Happacher13, K. Hara43, A. D. Hardman35, R. M. Harris11, F. Hartmann20, K. Hatakeyama37, J. Hauser6, J. Heinrich32, A. Heiss20, M. Herndon19, C. Hill5, K. D. Hoffman35, C. Holck32, R. Hollebeek32, L. Holloway18, R. Hughes28, J. Huston26, J. Huth16, H. Ikeda43, J. Incandela11, G. Introzzi33, J. Iwai45, Y. Iwata17, E. James25, M. Jones32, U. Joshi11, H. Kambara14, T. Kamon39, T. Kaneko43, K. Karr44, H. Kasha47, Y. Kato29, T. A. Keaffaber35, K. Kelley24, M. Kelly25, R. D. Kennedy11, R. Kephart11, D. Khazins10, T. Kikuchi43, B. Kilminster36, B. J. Kim21, D. H. Kim21, H. S. Kim18, M. J. Kim21, S. B. Kim21, S. H. Kim43, Y. K. Kim23, M. Kirby10, M. Kirk4, L. Kirsch4, S. Klimenko12, P. Koehn28, K. Kondo45, J. Konigsberg12, A. Korn24, A. Korytov12, E. Kovacs2, J. Kroll32, M. Kruse10, S. E. Kuhlmann2, K. Kurino17, T. Kuwabara43, A. T. Laasanen35, N. Lai8, S. Lami37, S. Lammel11, J. Lancaster10, M. Lancaster23, R. Lander5, A. Lath38, G. Latino33, T. LeCompte2, A. M. Lee, IV10, K. Lee40, S. Leone33, J. D. Lewis11, M. Lindgren6, T. M. Liss18, J. B. Liu36, Y. C. Liu1, D. O. Litvintsev11, O. Lobban40, N. Lockyer32, J. Loken30, M. Loreti31, D. Lucchesi31, P. Lukens11, S. Lusin46, L. Lyons30, J. Lys23, R. Madrak16, K. Maeshima11, P. Maksimovic16, L. Malferrari3, M. Mangano33, M. Mariotti31, G. Martignon31, A. Martin47, J. A. J. Matthews27, J. Mayer41, P. Mazzanti3, K. S. McFarland36, P. McIntyre39, E. McKigney32, M. Menguzzato31, A. Menzione33, C. Mesropian37, A. Meyer11, T. Miao11, R. Miller26, J. S. Miller25, H. Minato43, S. Miscetti13, M. Mishina22, G. Mitselmakher12, N. Moggi3, E. Moore27, R. Moore25, Y. Morita22, T. Moulik35, M. Mulhearn24, A. Mukherjee11, T. Muller20, A. Munar33, P. Murat11, S. Murgia26, J. Nachtman6, V. Nagaslaev40, S. Nahn47, H. Nakada43, I. Nakano17, C. Nelson11, T. Nelson11, C. Neu28, D. Neuberger20, C. Newman-Holmes11, C.-Y. P. Ngan24, H. Niu4, L. Nodulman2, A. Nomerotski12, S. H. Oh10, Y. D. Oh21, T. Ohmoto17, T. Ohsugi17, R. Oishi43, T. Okusawa29, J. Olsen46, W. Orejudos23, C. Pagliarone33, F. Palmonari33, R. Paoletti33, V. Papadimitriou40, D. Partos4, J. Patrick11, G. Pauletta42, M. Paulini23,†, C. Paus24, L. Pescara31, T. J. Phillips10, G. Piacentino33, K. T. Pitts18, A. Pompos35, L. Pondrom46, G. Pope34, M. Popovic41, F. Prokoshin9, J. Proudfoot2, F. Ptohos13, O. Pukhov9, G. Punzi33, A. Rakitine24, F. Ratnikov38, D. Reher23, A. Reichold30, A. Ribon31, W. Riegler16, F. Rimondi3, L. Ristori33, M. Riveline41, W. J. Robertson10, A. Robinson41, T. Rodrigo7, S. Rolli44, L. Rosenson24, R. Roser11, R. Rossin31, A. Roy35, A. Ruiz7, A. Safonov12, R. St. Denis15, W. K. Sakumoto36, D. Saltzberg6, C. Sanchez28, A. Sansoni13, L. Santi42, H. Sato43, P. Savard41, P. Schlabach11, E. E. Schmidt11, M. P. Schmidt47, M. Schmitt16,*, L. Scodellaro31, A. Scott6, A. Scribano33, S. Segler11, S. Seidel27, Y. Seiya43, A. Semenov9, F. Semeria3, T. Shah24, M. D. Shapiro23, P. F. Shepard34, T. Shibayama43, M. Shimojima43, M. Shochet8, A. Sidoti31, J. Siegrist23, A. Sill40, P. Sinervo41, P. Singh18, A. J. Slaughter47, K. Sliwa44, C. Smith19, F. D. Snider11, A. Solodsky37, J. Spalding11, T. Speer14, P. Sphicas24, F. Spinella33, M. Spiropulu16, L. Spiegel11, J. Steele46, A. Stefanini33, J. Strologas18, F. Strumia14, D. Stuart11, K. Sumorok24, T. Suzuki43, T. Takano29, R. Takashima17, K. Takikawa43, P. Tamburello10, M. Tanaka43, B. Tannenbaum6, M. Tecchio25, R. Tesarek11, P. K. Teng1, K. Terashi37, S. Tether24, A. S. Thompson15, R. Thurman-Keup2, P. Tipton36, S. Tkaczyk11, D. Toback39, K. Tollefson36, A. Tollestrup11, D. Tonelli33, H. Toyoda29, W. Trischuk41, J. F. de Troconiz16, J. Tseng24, N. Turini33, F. Ukegawa43, T. Vaiciulis36, J. Valls38, S. Vejcik, III11, G. Velev11, G. Veramendi23, R. Vidal11, I. Vila7, R. Vilar7, I. Volobouev23, M. von der Mey6, D. Vucinic24, R. G. Wagner2, R. L. Wagner11, N. B. Wallace38, Z. Wan38, C. Wang10, M. J. Wang1, B. Ward15, S. Waschke15, T. Watanabe43, D. Waters30, T. Watts38, R. Webb39, H. Wenzel20, W. C. Wester, III11, A. B. Wicklund2, E. Wicklund11, T. Wilkes5, H. H. Williams32, P. Wilson11, B. L. Winer28, D. Winn25, S. Wolbers11, D. Wolinski25, J. Wolinski26, S. Wolinski25, S. Worm27, X. Wu14, J. Wyss33, W. Yao23, G. P. Yeh11, P. Yeh1, J. Yoh11, C. Yosef26, T. Yoshida29, I. Yu21, S. Yu32, Z. Yu47, A. Zanetti42, F. Zetti23, and S. Zucchelli3 (CDF Collaboration)
1Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China
2Argonne National Laboratory, Argonne, Illinois 60439
3Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy
4Brandeis University, Waltham, Massachusetts 02254
5University of California at Davis, Davis, California 95616
6University of California at Los Angeles, Los Angeles, California 90024
7Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
8Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637
9Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
10Duke University, Durham, North Carolina 27708
11Fermi National Accelerator Laboratory, Batavia, Illinois 60510
12University of Florida, Gainesville, Florida 32611
13Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
14University of Geneva, CH-1211 Geneva 4, Switzerland
15Glasgow University, Glasgow G12 8QQ, United Kingdom
16Harvard University, Cambridge, Massachusetts 02138
17Hiroshima University, Higashi-Hiroshima 724, Japan
18University of Illinois, Urbana, Illinois 61801
19The Johns Hopkins University, Baltimore, Maryland 21218
20Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
21Center for High Energy Physics, Kyungpook National University, Taegu 702-701, Korea;Seoul National University, Seoul 151-742, Korea;SungKyunKwan University, Suwon 440-746, Korea
22High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305, Japan
23Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720
24Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
25University of Michigan, Ann Arbor, Michigan 48109
26Michigan State University, East Lansing, Michigan 48824
27University of New Mexico, Albuquerque, New Mexico 87131
28The Ohio State University, Columbus, Ohio 43210
29Osaka City University, Osaka 588, Japan
30University of Oxford, Oxford OX1 3RH, United Kingdom
31Universita di Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, Italy
32University of Pennsylvania, Philadelphia, Pennsylvania 19104
33Istituto Nazionale di Fisica Nucleare, University and Scuola Normale Superiore of Pisa, I-56100 Pisa, Italy
34University of Pittsburgh, Pittsburgh, Pennsylvania 15260
35Purdue University, West Lafayette, Indiana 47907
36University of Rochester, Rochester, New York 14627
37Rockefeller University, New York, New York 10021
38Rutgers University, Piscataway, New Jersey 08855
39Texas A&M University, College Station, Texas 77843
40Texas Tech University, Lubbock, Texas 79409
41Institute of Particle Physics, University of Toronto, Toronto, Canada M5S 1A7
42Istituto Nazionale di Fisica Nucleare, University of Trieste/Udine, Trieste, Italy
43University of Tsukuba, Tsukuba, Ibaraki 305, Japan
44Tufts University, Medford, Massachusetts 02155
45Waseda University, Tokyo 169, Japan
46University of Wisconsin, Madison, Wisconsin 53706
47Yale University, New Haven, Connecticut 06520
Received 2 June 2001; published 7 February 2002
We have searched for evidence of physics beyond the standard model in events that include an energetic photon and an energetic b-quark jet, produced in 85pb-1 of p̅ p collisions at 1.8 TeV at the Tevatron Collider at Fermilab. This signature, containing at least one gauge boson and a third-generation quark, could arise in the production and decay of a pair of new particles, such as those predicted by supersymmetry, leading to a production rate exceeding standard model predictions. We also search these events for anomalous production of missing transverse energy, additional jets and leptons (e, μ and τ), and additional b quarks. We find no evidence for any anomalous production of γb or γb+X events. We present limits on two supersymmetric models: a model where the photon is produced in the decay χ̃20→γχ̃10, and a model where the photon is produced in the neutralino decay into the gravitino LSP, χ̃10→γG̃. We also present our limits in a model-independent form and test methods of applying model-independent limits.
© 2002 The American Physical Society
URL:
http://link.aps.org/doi/10.1103/PhysRevD.65.052006
DOI:
10.1103/PhysRevD.65.052006
PACS:
13.85.Rm, 13.85.Qk, 14.80.Ly
*Present address: Northwestern University, Evanston, Illinois 60208. †Present address: Carnegie Mellon University, Pittsburgh, Pennsylvania 15213.
|
|
