Search for the neutral current top quark decayt→Zcusing the ratio ofZ-boson+4 jetstoW-boson+4 jetsproduction

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RESEARCH PRODUCT

Search for the neutral current top quark decayt→Zcusing the ratio ofZ-boson+4 jetstoW-boson+4 jetsproduction

Ivan-kresimir Furic Y. D. Oh C. S. Moon S. Pashapour Roman Lysak Je Jung S. Wilbur S. Cabrera S. Cabrera S. Tkaczyk David Stuart R. L. Wagner W. Johnson Louis Lyons K. Goulianos Sally Seidel Allan G Clark Roger Moore D. O. Litvintsev Sooran Kim V. Papadimitriou Christina Mesropian M. Cordelli G. Busetto Brian L Winer J. L. Gimmell Jonas Rademacker Jonas Rademacker Tara Shears R. G. Wagner S. H. Chuang P. De Barbaro Chris Hays Franco Bedeschi V. Cavaliere D. Toback R. G. Feild A. Pronko T. Davies P. B. Renton S. S. Yu J. M. Heuser Emily Nurse J. S. Suh Andrew Beretvas Y. Zheng Y. Zheng K. Kondo G. P. Di Giovanni N. Moggi M. Gold L. Sartori Sofia Vallecorsa S. H. Kim C. Dionisi M. Loreti G. Velev P. H. Beauchemin Peter Mcintyre G. Pauletta E. James Intae Yu Jason Nielsen Jason Nielsen B. Casal G. P. Yeh C. S. Hill C. S. Hill M. Giunta D. W. Jang C. S. Lin Sandra Leone Marcelo Vogel Tiehui Liu S. W. Lee S. W. Lee M. Rescigno Vyacheslav Krutelyov M. A. Schmidt R. Forrest L. Oakes Jane Nachtman J. Lys Christoph Paus Frank Chlebana F. Ptohos F. Ptohos Rodolfo Carosi Massimo Casarsa Y. Takeuchi Javier Cuevas Javier Cuevas A. Napier Petra Merkel B. T. Huffman D. J. Cox W. H. Chung A. Heijboer T. Kuhr J. Lueck Si Xie R. Roser Ivan Vila Teresa Rodrigo W. K. Sakumoto U. K. Yang U. K. Yang N. Pounder Stanislav Tokár H. Miyake G. Chlachidze D. E. Pellett Elliot Lipeles K. Terashi B. Rutherford Nicola Turini A. T. Laasanen P. Ttito-guzmán Giovanni Bellettini V. Boisvert A. Gresele L. Pinera A. Hocker C. Plager C. Grosso-pilcher I. Oksuzian S. Richter Michal Kreps O. Saltó Koji Nakamura Thomas Lecompte N. Van Remortel N. Van Remortel M. Weinberger Ignacio Redondo Hyun-chul Kim A. Bridgeman C. Deluca Mark Kruse Alison Lister E. Brubaker F. Happacher F. Vázquez F. Vázquez M. Kurata Andrew Ivanov S. Malde Paul Tipton Fabrizio Scuri S. Zucchelli R. E. Blair J. Nett Stefano Giagu S. Carron J. Galyardt A. Aurisano J. Slaunwhite Antonio Boveia T. Vine A. Rahaman Dario Bisello N. Goldschmidt C. Calancha R. Kephart P. Murat A. Bhatti Jahred Adelman L. Nodulman Th. Müller V. Sorin K. Sliwa S. Klimenko G. Cortiana J. Morlock T. Suzuki C. Wolfe Markus Frank D. Macqueen H. Gerberich K. T. Pitts R. Culbertson T. Miao D. Chokheli K. Gibson Beate Heinemann Daniela Bortoletto L. Brigliadori P. E. Karchin C. Ferrazza Duncan Carlsmith Xin Wu B. Knuteson M. Feindt P. Schlabach O. Poukhov S. Tourneur Alexei Safonov F. Rimondi B. Stelzer P. Mehtala Song-ming Wang T. J. Phillips V. Necula Sam Harper Paolo Azzurri A. Savoy-navarro X. Zhang N. Giokaris A. Schmidt Maria Agnese Ciocci N. Ranjan Tetsuo Arisawa C. Neu C. Neu Mark Neubauer Subir Sarkar R. Orava F. Azfar Chuan-ming Liu T. Spreitzer R. St. Denis S. Carrillo S. Carrillo P. Squillacioti Kazuhiko Hara J. Beringer J. N. Bellinger N. Miladinovic J. Patrick Victoria Jane Martin Victoria Jane Martin Antonio Sidoti O. Stelzer-chilton P. Roy T. Masubuchi F. Canelli F. Canelli N. S. Lockyer E. Thomson P. Mazzanti Roberto Rossin O. Norniella K. Chung Julien Donini A. Elagin Jay Dittmann G. Bauer G. Punzi D. Cauz D. Hirschbuehl M. Heck G. Lungu M. Jones Henry J. Frisch Jeannine Wagner-kuhr B. Di Ruzza D. Beecher Peter Wagner A. J. Slaughter R. D. Field M. J. Morello F. D. Snider C. A. Cox B. Whitehouse S. Y. Jun J. Linacre J. Y. Han Virgil E Barnes L. Ristori R. Vidal Kevin Burkett T. Okusawa A. J. Martin C. Vellidis Jochen Jens Heinrich Joe Kroll Monica D'onofrio B. Parks James Russ E. Pueschel L. Pondrom E. Wicklund G. L. Strycker J. D. Lewis Avraham Yagil H. S. Budd Kohei Yorita Fumihiko Ukegawa Michele Gallinaro A. Loginov Andrew Mehta Jacobo Konigsberg A. B. Wicklund M. J. Shochet A. Buzatu C. M. Ginsburg D. Lucchesi Michael L. Norman Julia Thom Julia Thom P. F. Shepard S. H. Oh S. Wolbers B. Jayatilaka Peter Wittich Peter Wittich R. J. Miller D. Glenzinski Michael Schmitt N. Kimura D. W. Gerdes G. A. Thompson T. Wright S. Grinstein T. Aaltonen C. P. Marino G. De Lorenzo J. Huston M. J. Kim K. Makhoul Manfred Paulini Manuela Campanelli M. Hartz E. Rogers A. Soha G. Flanagan K. S. Mcfarland E. Lee M. Stanitzki M. Mathis A. Artikov J. Mülmenstädt Gino Bolla A. Mukherjee M. M. Deninno Alberto Annovi A. Scribano V. Khotilovich Y. Seiya B. R. Ko Corrinne Mills Reisaburo Tanaka M. Rossi J. Keung S. Torre Guido Volpi D. Torretta Andrea Bocci O. González S. Z. Shalhout E. E. Schmidt D. Stentz D. Dagenhart D. Krop D. Amidei A. Menzione S. Donati J. Deng Kenichi Hatakeyama A. T. Goshaw H. C. Fang A. Canepa J. C. Yun K. K. Joo Itsuo Nakano Mariopaolo Giordani S. Budd P. Dong K. Genser Tommaso Dorigo Kyung-suk Cho R. E. Hughes T. Rodriguez J. Yoh Robin Erbacher M. Datta Petar Maksimovic Paul Lujan A. Mitra G. Piacentino R. Vilar Kevin Lannon Kevin Lannon Alan Garfinkel Thorsten Chwalek E. Palencia J. C. Cully Z. Gunay-unalan M. Franklin J. Weinelt M. P. Schmidt A. Semenov D. Clark Yongsun Kim J. E. Kim Y. C. Chen Katsufumi Sato L. Santi Claudio Luci S. R. Hou S. Errede Yasuyoshi Nagai Francesco Crescioli I. Suslov W-m. Yao P. Totaro Maxwell Chertok Koji Yamamoto Y. Shon A. Manousakis-katsikakis J. Yamaoka A. Attal T. Kubo H. W. Kim Alexander Paramonov Guenakh Mitselmakher R. Mcnulty R. Mcnulty M. Hare Y. C. Yang E. Vataga P. K. Teng Guillelmo Gomez-ceballos J. Antos Georgios Choudalakis J. Conway I. Bizjak S. Hewamanage Sinead Farrington H. Saarikko S. Neubauer J. C. Freeman A. Ruiz Ulysses Grundler S. Y. Tsai Giorgio Chiarelli R. Mumford D. Hare D. Waters C. Cuenca Almenar C. Cuenca Almenar R. Madrak J. Naganoma M. Tecchio J. Proudfoot A. Bodek V. A. Giakoumopoulou M. Mussini Gervasio Gomez Eva Halkiadakis Matthew Herndon P. Catastini Giuseppe Latino L. Zanello M. K. Jha A. Golossanov C. Bromberg A. Deisher F. Prakoshyn I. Shreyber Malte Renz S. Kwang Fabrizio Margaroli Shih-fu Chang Alessandro Cerri W. Ashmanskas Sudhir Malik M. Campbell Frank Würthwein C. P. Marino M. Vidal A. Varganov J. P. Fernandez L. E. Kirsch Wolfgang Wagner Wolfgang Wagner Marco Trovato M. Lindgren Tomoko Yoshida Tomoko Yoshida Kristian Allan Hahn J. Efron Andrey Korytov M. E. Convery Luca Scodellaro K. L. Byrum P. Giromini Y. S. Chung Ricardo Eusebi A. Barbaro-galtieri Dean Hidas Anna Zanetti M. Hussein S. Rolli Benjamin Kilminster Joe Incandela J. Strologas P. Sinervo Barry Blumenfeld R. F. Harr L. Lovas V. V. Glagolev M. Iori Shih-chieh Hsu S. Amerio R. Takashima S. Lami S. Somalwar Deepak Kar A. Apresyan G. Manca Amitabh Lath P. J. Bussey Anna Sfyrla S. Shiraishi Paola Giannetti B. A. Barnett Giorgio Apollinari K. Osterberg Teruki Kamon C. I. Ciobanu R. Martínez-ballarín Thomas Peiffer Craig Blocker Kaori Maeshima S. R. Hahn H. S. Lee Paolo Mastrandrea P. Wilson J. E. Garcia Matteo Cavalli-sforza Daniel Whiteson Daniel Whiteson N. P. Kulkarni V. Ramakrishnan Aidan Robson D. P. Benjamin D. Errede G. B. Yu Y. Kato Y. Kato V. Bartsch J. Guimaraes Da Costa D. Tonelli I. V. Gorelov M. A. Houlden B. Y. Han K. Tollefson P. Movilla Fernandez J. P. Chou A. Nagano A. Sedov Elisabetta Pianori A. V. Kotwal Thomas Schwarz J. R. Smith J. Spalding W. C. Wester Igor Volobouev Igor Volobouev A. Penzo R. Snihur S. Behari J. Boudreau L. Sexton-kennedy G. Compostella Maxim Goncharov T. Akimoto Conor Henderson N. Krumnack G. Giurgiu S. De Cecco A. Gessler P. F. Derwent V. Rusu M. Lancaster J. Pursley Federico Sforza A. N. Sisakyan W. Badgett A. Papaikonomou M. Shimojima M. Shimojima Rainer Wallny Andreas Warburton T. Maki T. Wakisaka F. Garberson Mauro Dell'orso C. Haber I. Lazzizzera G. Williams A. Anastassov Stephan Lammel Lucio Cerrito Lucio Cerrito E. J. Jeon A. Sukhanov M. Binkley M. E. Mattson T. Tomura Robert M Harris Andrea Castro S. Pagan Griso M. Milnik U. Husemann B. ÁLvarez González B. ÁLvarez González D. J. Kong T. Maruyama B. Carls P. Lukens Daijin Kim W. T. Fedorko M. Martinez A. S. Thompson Anyes Taffard Anyes Taffard S. Burke H. H. Williams G. Introzzi Y. Tu Sergo Jindariani J. Budagov R. L. Lander T. R. Junk L. Demortier S. Dube B. Brau B. Brau

subject

Quark Physics Nuclear and High Energy Physics Top quark Particle physics Neutral current 010308 nuclear & particles physics Branching fraction High Energy Physics::Phenomenology 7. Clean energy 01 natural sciences Standard Model Nuclear physics Particle decay 0103 physical sciences High Energy Physics::Experiment Production (computer science)010306 general physics Collider Detector at Fermilab

description

We have used the Collider Detector at Fermilab (CDF II) to search for the flavor-changing neutral-current (FCNC) top quark decay t {yields} Zc using a technique employing ratios of W and Z production, measured in p{bar p} data corresponding to an integrated luminosity of 1.52 fb{sup -1}. The analysis uses a comparison of two decay chains, p{bar p} {yields} t{bar t} {yields} WbWb {yields} {ell}{nu}bjjb and p{bar p} {yields} t{bar t} {yields} ZcWb {yields} {ell}{ell}cjjb, to cancel systematic uncertainties in acceptance, efficiency, and luminosity. We validate the modeling of acceptance and efficiency for lepton identification over the multi-year dataset using another ratio of W and Z production, in this case the observed ratio of inclusive production of W to Z bosons. To improve the discrimination against standard model backgrounds to top quark decays, we calculate the top quark mass for each event with two leptons and four jets assuming it is a t{bar t} event with one of the top quarks decaying to Zc. For additional background discrimination we require at least one jet to be identified as originating from a b-quark. No significant signal is found and we set an upper limit on the FCNC branching ratio Br(t {yields} Zc) using a likelihood constructed from the {ell}{ell}cjjb top quark mass distribution and the number of {ell}{nu}bjjb events. Limits are set as a function of the helicity of the Z boson produced in the FCNC decay. For 100% longitudinally polarized Z bosons we find limits of 8.3% and 9.3% (95% C.L.) depending on the assumptions regarding the theoretical top quark pair production cross-section.

year	journal	country	edition	language
2009-09-08	Physical Review D

https://doi.org/10.1103/physrevd.80.052001