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Model-independent and quasi-model-independent search for new physics at CDF

T. Aaltonen²², A. Abulencia²³, J. Adelman¹², T. Akimoto⁵³, M. G. Albrow¹⁶, B. Álvarez González¹⁰, S. Amerio⁴¹, D. Amidei³³, A. Anastassov⁵⁰ et al. (CDF Collaboration)

A. Anastassov⁵⁰, A. Annovi¹⁸, J. Antos¹³, G. Apollinari¹⁶, A. Apresyan⁴⁶, T. Arisawa⁵⁵, A. Artikov¹⁴, W. Ashmanskas¹⁶, A. Aurisano⁵¹, F. Azfar⁴⁰, P. Azzi-Bacchetta⁴¹, P. Azzurri⁴⁴, N. Bacchetta⁴¹, W. Badgett¹⁶, V. E. Barnes⁴⁶, B. A. Barnett²⁴, S. Baroiant⁶, V. Bartsch²⁹, G. Bauer³¹, P.-H. Beauchemin³², F. Bedeschi⁴⁴, P. Bednar¹³, S. Behari²⁴, G. Bellettini⁴⁴, J. Bellinger⁵⁷, A. Belloni³¹, D. Benjamin¹⁵, A. Beretvas¹⁶, T. Berry²⁸, A. Bhatti⁴⁸, M. Binkley¹⁶, D. Bisello⁴¹, I. Bizjak²⁹, R. E. Blair², C. Blocker⁵, B. Blumenfeld²⁴, A. Bocci¹⁵, A. Bodek⁴⁷, V. Boisvert⁴⁷, G. Bolla⁴⁶, A. Bolshov³¹, D. Bortoletto⁴⁶, J. Boudreau⁴⁵, A. Boveia⁹, B. Brau⁹, L. Brigliadori⁴, C. Bromberg³⁴, E. Brubaker¹², J. Budagov¹⁴, H. S. Budd⁴⁷, S. Budd²³, K. Burkett¹⁶, G. Busetto⁴¹, P. Bussey²⁰, A. Buzatu³², K. L. Byrum², S. Cabrera^15,s, M. Campanelli³⁴, M. Campbell³³, F. Canelli¹⁶, A. Canepa⁴³, D. Carlsmith⁵⁷, R. Carosi⁴⁴, S. Carrillo^17,m, S. Carron³², B. Casal¹⁰, M. Casarsa¹⁶, A. Castro⁴, P. Catastini⁴⁴, D. Cauz⁵², A. Cerri²⁷, L. Cerrito^29,q, S. H. Chang²⁶, Y. C. Chen¹, M. Chertok⁶, G. Chiarelli⁴⁴, G. Chlachidze¹⁶, F. Chlebana¹⁶, K. Cho²⁶, D. Chokheli¹⁴, J. P. Chou²¹, G. Choudalakis³¹, S. H. Chuang⁵⁰, K. Chung¹¹, W. H. Chung⁵⁷, Y. S. Chung⁴⁷, C. I. Ciobanu²³, M. A. Ciocci⁴⁴, A. Clark¹⁹, D. Clark⁵, G. Compostella⁴¹, M. E. Convery¹⁶, J. Conway⁶, B. Cooper²⁹, K. Copic³³, M. Cordelli¹⁸, G. Cortiana⁴¹, F. Crescioli⁴⁴, C. Cuenca Almenar^6,s, J. Cuevas^10,p, R. Culbertson¹⁶, J. C. Cully³³, D. Dagenhart¹⁶, M. Datta¹⁶, T. Davies²⁰, P. de Barbaro⁴⁷, S. De Cecco⁴⁹, A. Deisher²⁷, G. De Lentdecker^47,e, M. Dell’Orso⁴⁴, L. Demortier⁴⁸, J. Deng¹⁵, M. Deninno⁴, D. De Pedis⁴⁹, P. F. Derwent¹⁶, G. P. Di Giovanni⁴², C. Dionisi⁴⁹, B. Di Ruzza⁵², J. R. Dittmann³, S. Donati⁴⁴, P. Dong⁷, J. Donini⁴¹, T. Dorigo⁴¹, S. Dube⁵⁰, J. Efron³⁷, R. Erbacher⁶, D. Errede²³, S. Errede²³, R. Eusebi¹⁶, H. C. Fang²⁷, S. Farrington²⁸, W. T. Fedorko¹², R. G. Feild⁵⁸, M. Feindt²⁵, J. P. Fernandez³⁰, C. Ferrazza⁴⁴, R. Field¹⁷, G. Flanagan⁴⁶, R. Forrest⁶, S. Forrester⁶, M. Franklin²¹, J. C. Freeman²⁷, I. Furic¹⁷, M. Gallinaro⁴⁸, J. Galyardt¹¹, F. Garberson⁹, J. E. Garcia⁴⁴, A. F. Garfinkel⁴⁶, H. Gerberich²³, D. Gerdes³³, S. Giagu⁴⁹, P. Giannetti⁴⁴, K. Gibson⁴⁵, J. L. Gimmell⁴⁷, C. Ginsburg¹⁶, N. Giokaris^14,b, M. Giordani⁵², P. Giromini¹⁸, M. Giunta⁴⁴, V. Glagolev¹⁴, D. Glenzinski¹⁶, M. Gold³⁵, N. Goldschmidt¹⁷, J. Goldstein^40,d, A. Golossanov¹⁶, G. Gomez¹⁰, G. Gomez-Ceballos³¹, M. Goncharov⁵¹, O. González³⁰, I. Gorelov³⁵, A. T. Goshaw¹⁵, K. Goulianos⁴⁸, A. Gresele⁴¹, S. Grinstein²¹, C. Grosso-Pilcher¹², R. C. Group¹⁶, U. Grundler²³, J. Guimaraes da Costa²¹, Z. Gunay-Unalan³⁴, K. Hahn³¹, S. R. Hahn¹⁶, E. Halkiadakis⁵⁰, A. Hamilton¹⁹, B.-Y. Han⁴⁷, J. Y. Han⁴⁷, R. Handler⁵⁷, F. Happacher¹⁸, K. Hara⁵³, D. Hare⁵⁰, M. Hare⁵⁴, S. Harper⁴⁰, R. F. Harr⁵⁶, R. M. Harris¹⁶, M. Hartz⁴⁵, K. Hatakeyama⁴⁸, J. Hauser⁷, C. Hays⁴⁰, M. Heck²⁵, A. Heijboer⁴³, J. Heinrich⁴³, C. Henderson³¹, M. Herndon⁵⁷, J. Heuser²⁵, S. Hewamanage³, D. Hidas¹⁵, C. S. Hill^9,d, D. Hirschbuehl²⁵, A. Hocker¹⁶, S. Hou¹, M. Houlden²⁸, S.-C. Hsu⁸, B. T. Huffman⁴⁰, R. E. Hughes³⁷, U. Husemann⁵⁸, J. Huston³⁴, J. Incandela⁹, G. Introzzi⁴⁴, M. Iori⁴⁹, A. Ivanov⁶, B. Iyutin³¹, E. James¹⁶, B. Jayatilaka¹⁵, D. Jeans⁴⁹, E. J. Jeon²⁶, S. Jindariani¹⁷, W. Johnson⁶, M. Jones⁴⁶, K. K. Joo²⁶, S. Y. Jun¹¹, J. E. Jung²⁶, T. R. Junk²³, T. Kamon⁵¹, D. Kar¹⁷, P. E. Karchin⁵⁶, Y. Kato³⁹, R. Kephart¹⁶, U. Kerzel²⁵, V. Khotilovich⁵¹, B. Kilminster³⁷, D. H. Kim²⁶, H. S. Kim²⁶, J. E. Kim²⁶, M. J. Kim¹⁶, S. B. Kim²⁶, S. H. Kim⁵³, Y. K. Kim¹², N. Kimura⁵³, L. Kirsch⁵, S. Klimenko¹⁷, M. Klute³¹, B. Knuteson³¹, B. R. Ko¹⁵, S. A. Koay⁹, K. Kondo⁵⁵, D. J. Kong²⁶, J. Konigsberg¹⁷, A. Korytov¹⁷, A. V. Kotwal¹⁵, J. Kraus²³, M. Kreps²⁵, J. Kroll⁴³, N. Krumnack³, M. Kruse¹⁵, V. Krutelyov⁹, T. Kubo⁵³, S. E. Kuhlmann², T. Kuhr²⁵, N. P. Kulkarni⁵⁶, Y. Kusakabe⁵⁵, S. Kwang¹², A. T. Laasanen⁴⁶, S. Lai³², S. Lami⁴⁴, M. Lancaster²⁹, R. L. Lander⁶, K. Lannon³⁷, A. Lath⁵⁰, G. Latino⁴⁴, I. Lazzizzera⁴¹, T. LeCompte², J. Lee⁴⁷, J. Lee²⁶, Y. J. Lee²⁶, S. W. Lee^51,r, R. Lefèvre¹⁹, N. Leonardo³¹, S. Leone⁴⁴, S. Levy¹², J. D. Lewis¹⁶, C. Lin⁵⁸, M. Lindgren¹⁶, E. Lipeles⁸, A. Lister⁶, D. O. Litvintsev¹⁶, T. Liu¹⁶, N. S. Lockyer⁴³, A. Loginov⁵⁸, M. Loreti⁴¹, L. Lovas¹³, R.-S. Lu¹, D. Lucchesi⁴¹, J. Lueck²⁵, C. Luci⁴⁹, P. Lujan²⁷, P. Lukens¹⁶, G. Lungu¹⁷, L. Lyons⁴⁰, R. Lysak¹³, E. Lytken⁴⁶, P. Mack²⁵, D. MacQueen³², R. Madrak¹⁶, K. Maeshima¹⁶, K. Makhoul³¹, T. Maki²², P. Maksimovic²⁴, S. Malde⁴⁰, S. Malik²⁹, A. Manousakis^14,b, F. Margaroli⁴⁶, C. Marino²⁵, C. P. Marino²³, A. Martin⁵⁸, M. Martin²⁴, V. Martin^20,k, R. Martínez-Ballarín³⁰, T. Maruyama⁵³, P. Mastrandrea⁴⁹, T. Masubuchi⁵³, M. E. Mattson⁵⁶, P. Mazzanti⁴, K. S. McFarland⁴⁷, P. McIntyre⁵¹, R. McNulty^28,j, A. Mehta²⁸, P. Mehtala²², S. Menzemer^10,l, A. Menzione⁴⁴, P. Merkel⁴⁶, C. Mesropian⁴⁸, A. Messina³⁴, T. Miao¹⁶, N. Miladinovic⁵, J. Miles³¹, R. Miller³⁴, C. Mills²¹, M. Milnik²⁵, A. Mitra¹, G. Mitselmakher¹⁷, H. Miyake⁵³, S. Moed¹⁹, N. Moggi⁴, C. S. Moon²⁶, R. Moore¹⁶, M. Morello⁴⁴, P. Movilla Fernandez²⁷, S. Mrenna¹⁶, J. Mülmenstädt²⁷, A. Mukherjee¹⁶, Th. Muller²⁵, R. Mumford²⁴, P. Murat¹⁶, M. Mussini⁴, J. Nachtman¹⁶, Y. Nagai⁵³, A. Nagano⁵³, J. Naganoma⁵⁵, K. Nakamura⁵³, I. Nakano³⁸, A. Napier⁵⁴, V. Necula¹⁵, C. Neu⁴³, M. S. Neubauer²³, L. Nodulman², M. Norman⁸, O. Norniella²³, E. Nurse²⁹, S. H. Oh¹⁵, Y. D. Oh²⁶, I. Oksuzian¹⁷, T. Okusawa³⁹, R. Orava²², K. Osterberg²², S. Pagan Griso⁴¹, C. Pagliarone⁴⁴, E. Palencia¹⁶, V. Papadimitriou¹⁶, A. Papaikonomou²⁵, A. A. Paramonov¹², B. Parks³⁷, S. Pashapour³², J. Patrick¹⁶, G. Pauletta⁵², M. Paulini¹¹, C. Paus³¹, D. E. Pellett⁶, A. Penzo⁵², T. J. Phillips¹⁵, G. Piacentino⁴⁴, J. Piedra⁴², L. Pinera¹⁷, K. Pitts²³, C. Plager⁷, L. Pondrom⁵⁷, O. Poukhov¹⁴, N. Pounder⁴⁰, F. Prakoshyn¹⁴, A. Pronko¹⁶, J. Proudfoot², F. Ptohos^16,i, G. Punzi⁴⁴, J. Pursley⁵⁷, J. Rademacker^40,d, A. Rahaman⁴⁵, V. Ramakrishnan⁵⁷, N. Ranjan⁴⁶, I. Redondo³⁰, B. Reisert¹⁶, V. Rekovic³⁵, P. Renton⁴⁰, M. Rescigno⁴⁹, S. Richter²⁵, F. Rimondi⁴, L. Ristori⁴⁴, A. Robson²⁰, T. Rodrigo¹⁰, E. Rogers²³, R. Roser¹⁶, M. Rossi⁵², R. Rossin⁹, P. Roy³², A. Ruiz¹⁰, J. Russ¹¹, V. Rusu¹⁶, H. Saarikko²², A. Safonov⁵¹, W. K. Sakumoto⁴⁷, G. Salamanna⁴⁹, L. Santi⁵², S. Sarkar⁴⁹, L. Sartori⁴⁴, K. Sato¹⁶, A. Savoy-Navarro⁴², T. Scheidle²⁵, P. Schlabach¹⁶, E. E. Schmidt¹⁶, M. P. Schmidt⁵⁸, M. Schmitt³⁶, T. Schwarz⁶, L. Scodellaro¹⁰, A. L. Scott⁹, A. Scribano⁴⁴, F. Scuri⁴⁴, A. Sedov⁴⁶, S. Seidel³⁵, Y. Seiya³⁹, A. Semenov¹⁴, L. Sexton-Kennedy¹⁶, A. Sfyrla¹⁹, S. Z. Shalhout⁵⁶, T. Shears²⁸, P. F. Shepard⁴⁵, D. Sherman²¹, M. Shimojima^53,o, M. Shochet¹², Y. Shon⁵⁷, I. Shreyber¹⁹, A. Sidoti⁴⁴, A. Sisakyan¹⁴, A. J. Slaughter¹⁶, J. Slaunwhite³⁷, K. Sliwa⁵⁴, J. R. Smith⁶, F. D. Snider¹⁶, R. Snihur³², M. Soderberg³³, A. Soha⁶, S. Somalwar⁵⁰, V. Sorin³⁴, J. Spalding¹⁶, F. Spinella⁴⁴, T. Spreitzer³², P. Squillacioti⁴⁴, M. Stanitzki⁵⁸, R. St. Denis²⁰, B. Stelzer⁷, O. Stelzer-Chilton⁴⁰, D. Stentz³⁶, J. Strologas³⁵, D. Stuart⁹, J. S. Suh²⁶, A. Sukhanov¹⁷, H. Sun⁵⁴, I. Suslov¹⁴, T. Suzuki⁵³, A. Taffard^23,f, R. Takashima³⁸, Y. Takeuchi⁵³, R. Tanaka³⁸, M. Tecchio³³, P. K. Teng¹, K. Terashi⁴⁸, J. Thom^16,h, A. S. Thompson²⁰, G. A. Thompson²³, E. Thomson⁴³, P. Tipton⁵⁸, V. Tiwari¹¹, S. Tkaczyk¹⁶, D. Toback⁵¹, S. Tokar¹³, K. Tollefson³⁴, T. Tomura⁵³, D. Tonelli¹⁶, S. Torre¹⁸, D. Torretta¹⁶, S. Tourneur⁴², Y. Tu⁴³, N. Turini⁴⁴, F. Ukegawa⁵³, S. Uozumi⁵³, S. Vallecorsa¹⁹, N. van Remortel²², A. Varganov³³, E. Vataga³⁵, F. Vázquez^17,m, G. Velev¹⁶, C. Vellidis^44,b, V. Veszpremi⁴⁶, M. Vidal³⁰, R. Vidal¹⁶, I. Vila¹⁰, R. Vilar¹⁰, T. Vine²⁹, M. Vogel³⁵, G. Volpi⁴⁴, F. Würthwein⁸, P. Wagner⁴³, R. G. Wagner², R. L. Wagner¹⁶, J. Wagner²⁵, W. Wagner²⁵, R. Wallny⁷, S. M. Wang¹, A. Warburton³², D. Waters²⁹, M. Weinberger⁵¹, W. C. Wester, III¹⁶, B. Whitehouse⁵⁴, D. Whiteson^43,f, A. B. Wicklund², E. Wicklund¹⁶, G. Williams³², H. H. Williams⁴³, P. Wilson¹⁶, B. L. Winer³⁷, P. Wittich^16,h, S. Wolbers¹⁶, C. Wolfe¹², T. Wright³³, X. Wu¹⁹, S. M. Wynne²⁸, S. Xie³¹, A. Yagil⁸, K. Yamamoto³⁹, J. Yamaoka⁵⁰, T. Yamashita³⁸, C. Yang⁵⁸, U. K. Yang^12,o, Y. C. Yang²⁶, W. M. Yao²⁷, G. P. Yeh¹⁶, J. Yoh¹⁶, K. Yorita¹², T. Yoshida³⁹, G. B. Yu⁴⁷, I. Yu²⁶, S. S. Yu¹⁶, J. C. Yun¹⁶, L. Zanello⁴⁹, A. Zanetti⁵², I. Zaw²¹, X. Zhang²³, Y. Zheng^7,c, and S. Zucchelli⁴ (CDF Collaboration)

¹Institute of Physics, Academia Sinica, Taipei, Taiwan 11529, Republic of China
²Argonne National Laboratory, Argonne, Illinois 60439, USA
³Baylor University, Waco, Texas 76798, USA
⁴Istituto Nazionale di Fisica Nucleare, University of Bologna, I-40127 Bologna, Italy
⁵Brandeis University, Waltham, Massachusetts 02254, USA
⁶University of California, Davis, Davis, California 95616, USA
⁷University of California, Los Angeles, Los Angeles, California 90024, USA
⁸University of California, San Diego, La Jolla, California 92093, USA
⁹University of California, Santa Barbara, Santa Barbara, California 93106, USA
¹⁰Instituto de Fisica de Cantabria, CSIC-University of Cantabria, 39005 Santander, Spain
¹¹Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USA
¹²Enrico Fermi Institute, University of Chicago, Chicago, Illinois 60637, USA
¹³Comenius University, 842 48 Bratislava, Slovakia; Institute of Experimental Physics, 040 01 Kosice, Slovakia
¹⁴Joint Institute for Nuclear Research, RU-141980 Dubna, Russia
¹⁵Duke University, Durham, North Carolina 27708, USA
¹⁶Fermi National Accelerator Laboratory, Batavia, Illinois 60510, USA
¹⁷University of Florida, Gainesville, Florida 32611, USA
¹⁸Laboratori Nazionali di Frascati, Istituto Nazionale di Fisica Nucleare, I-00044 Frascati, Italy
¹⁹University of Geneva, CH-1211 Geneva 4, Switzerland
²⁰Glasgow University, Glasgow G12 8QQ, United Kingdom
²¹Harvard University, Cambridge, Massachusetts 02138, USA
²²Division of High Energy Physics, Department of Physics, University of Helsinki and Helsinki Institute of Physics, FIN-00014, Helsinki, Finland
²³University of Illinois, Urbana, Illinois 61801, USA
²⁴The Johns Hopkins University, Baltimore, Maryland 21218, USA
²⁵Institut für Experimentelle Kernphysik, Universität Karlsruhe, 76128 Karlsruhe, Germany
²⁶Center for High Energy Physics, Kyungpook National University, Taegu 702-701, Korea; Seoul National University, Seoul 151-742, Korea; SungKyunKwan University, Suwon 440-746, Korea; Korea Institute of Science and Technology Information, Daejeon, 305-806, Korea; Chonnam National University, Gwangju, 500-757, Korea
²⁷Ernest Orlando Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA
²⁸University of Liverpool, Liverpool L69 7ZE, United Kingdom
²⁹University College London, London WC1E 6BT, United Kingdom
³⁰Centro de Investigaciones Energeticas Medioambientales y Tecnologicas, E-28040 Madrid, Spain
³¹Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
³²Institute of Particle Physics, McGill University, Montréal, Canada H3A 2T8; and University of Toronto, Toronto, Canada M5S 1A7
³³University of Michigan, Ann Arbor, Michigan 48109, USA
³⁴Michigan State University, East Lansing, Michigan 48824, USA
³⁵University of New Mexico, Albuquerque, New Mexico 87131, USA
³⁶Northwestern University, Evanston, Illinois 60208, USA
³⁷The Ohio State University, Columbus, Ohio 43210, USA
³⁸Okayama University, Okayama 700-8530, Japan
³⁹Osaka City University, Osaka 588, Japan
⁴⁰University of Oxford, Oxford OX1 3RH, United Kingdom
⁴¹University of Padova, Istituto Nazionale di Fisica Nucleare, Sezione di Padova-Trento, I-35131 Padova, Italy
⁴²LPNHE, Universite Pierre et Marie Curie/IN2P3-CNRS, UMR7585, Paris, F-75252 France
⁴³University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
⁴⁴Istituto Nazionale di Fisica Nucleare Pisa, Universities of Pisa, Siena and Scuola Normale Superiore, I-56127 Pisa, Italy
⁴⁵University of Pittsburgh, Pittsburgh, Pennsylvania 15260, USA
⁴⁶Purdue University, West Lafayette, Indiana 47907, USA
⁴⁷University of Rochester, Rochester, New York 14627, USA
⁴⁸The Rockefeller University, New York, New York 10021, USA
⁴⁹Istituto Nazionale di Fisica Nucleare, Sezione di Roma 1, University of Rome “La Sapienza,” I-00185 Roma, Italy
⁵⁰Rutgers University, Piscataway, New Jersey 08855, USA
⁵¹Texas A&M University, College Station, Texas 77843, USA
⁵²Istituto Nazionale di Fisica Nucleare, University of Trieste/Udine, Italy
⁵³University of Tsukuba, Tsukuba, Ibaraki 305, Japan
⁵⁴Tufts University, Medford, Massachusetts 02155, USA
⁵⁵Waseda University, Tokyo 169, Japan
⁵⁶Wayne State University, Detroit, Michigan 48201, USA
⁵⁷University of Wisconsin, Madison, Wisconsin 53706, USA
⁵⁸Yale University, New Haven, Connecticut 06520, USA

^aWith visitors from
^bUniversity of Athens, 15784 Athens, Greece;
^cChinese Academy of Sciences, Beijing 100864, China;
^dUniversity of Bristol, Bristol BS8 1TL, United Kingdom;
^eUniversity Libre de Bruxelles, B-1050 Brussels, Belgium;
^fUniversity of California, Irvine, Irvine, CA 92697, USA;
^gUniversity of California Santa Cruz, Santa Cruz, CA 95064, USA;
^hCornell University, Ithaca, NY 14853, USA;
ⁱUniversity of Cyprus, Nicosia CY-1678, Cyprus;
^jUniversity College Dublin, Dublin 4, Ireland;
^kUniversity of Edinburgh, Edinburgh EH9 3JZ, United Kingdom;
^lUniversity of Heidelberg, D-69120 Heidelberg, Germany;
^mUniversidad Iberoamericana, Mexico D.F., Mexico;
ⁿUniversity of Manchester, Manchester M13 9PL, England;
^oNagasaki Institute of Applied Science, Nagasaki, Japan;
^pUniversity de Oviedo, E-33007 Oviedo, Spain;
^qQueen Mary’s College, University of London, London, E1 4NS, England;
^rTexas Tech University, Lubbock, TX 79409, USA;
^sIFIC (CSIC-Universitat de Valencia), 46071 Valencia, Spain.

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Phys. Rev. D 78, 012002 – Published 11 July, 2008

DOI: https://doi.org/10.1103/PhysRevD.78.012002

Abstract

Data collected in run II of the Fermilab Tevatron are searched for indications of new electroweak scale physics. Rather than focusing on particular new physics scenarios, CDF data are analyzed for discrepancies with respect to the standard model prediction. A model-independent approach (Vista) considers the gross features of the data and is sensitive to new large cross section physics. A quasi-model-independent approach (Sleuth) searches for a significant excess of events with large summed transverse momentum and is particularly sensitive to new electroweak scale physics that appears predominantly in one final state. This global search for new physics in over 300 exclusive final states in $927 {pb}^{- 1}$ of $p \bar{p}$ collisions at $\sqrt{s} = 1.96 TeV$ reveals no such significant indication of physics beyond the standard model.

Article Text

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Physical Review D

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Model-independent and quasi-model-independent search for new physics at CDF

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