Search for flavor changing neutral currents via quark–gluon couplings in single top quark production using 2.3 fb−1 of pp¯ collisions

6533b86efe1ef96bd12cb298

RESEARCH PRODUCT

Search for flavor changing neutral currents via quark–gluon couplings in single top quark production using 2.3 fb−1 of pp¯ collisions

Gavin Davies Philippe Calfayan S. M. Lietti Y. Scheglov Kaushik De Jan Stark Henry Lubatti Stephen Wimpenny J. Backusmayes Martin Grunewald Milos Lokajicek J. M. Hauptman F. Guo J. Cammin Darien Wood C. P. Buszello Yuehong Xie S. Blessing Scott Snyder Cecilia Elena Gerber Nikos Varelas Bing Zhou D. A. Stoyanova Sergey Burdin M. Abolins B. Tiller A. Evdokimov G. Ginther G. Ginther M. C. Cousinou G. Weber D. Chakraborty Robert Hirosky Kristian Harder Don Lincoln Erich Varnes Suyong Choi W. M. Van Leeuwen P. Verdier A. Das M. Sosebee Jianming Qian J. Joshi Y. W. Liu S. P. Denisov Andrew White C. L. Mcgivern Wade Cameron Fisher D. Cutts Sergio F Novaes A. Sanchez-hernandez M. P. Sanders Graham Wilson B. Sanghi V. A. Kuzmin Philip Baringer G. Gutierrez Yurii Maravin Vladimir Gavrilov Gilvan Alves J. Piper S. Banerjee S. Hossain Gordon Watts V. Sirotenko N. K. Mondal D. Boline H. T. Diehl T. A. Bolton M. Vesterinen R. Madar Michael Begel Andrew Askew Eduardo De Moraes Gregores Markus Wobisch A. Dubey P. Vint A. V. Popov G. Golovanov Greg Landsberg D. Johnston L. S. Vertogradov Peter Love W. Geng W. Geng W. C. Yang G. Grenier A. S. Ito A. Melnitchouk K. Herner J. Clutter Md. Naimuddin Maxim Perfilov J. K. Lim Ketino Kaadze A. Boehnlein D. Karmanov V. Parihar E. De La Cruz-burelo A. Dominguez John Hobbs Gregorio Bernardi D. Denisov Gustaaf Brooijmans A. S. Santos Phillip Gutierrez M. Kirsch L. S. Ancu J. Barreto D. Menezes D. Smirnov Hal Evans J. Ellison Emanuela Barberis K. Soustruznik B. ÅSman G. Savage S. Chevalier-théry Thomas Ferbel Thomas Ferbel M. Prewitt Lars Sonnenschein Sa. Jain S. Fuess A. P. Heinson Andrew Brandt L. Zivkovic L. Bellantoni D. N. Brown T. Kurca J. Warchol Suneel Dutt Oleg Brandt J. Martínez-ortega Bjoern Penning P. Neustroev H. E. Fisk E. Strauss Ia Iashvili G. C. Blazey Brajesh C Choudhary V. V. Lipaev J. Lellouch Marc Weber M. A. Pleier A. Alton Meng Wang C. Belanger-champagne Raimund Ströhmer V. Simak Sabine Lammers P. Svoisky N. Khalatyan S. Yacoob P. D. Grannis R. Yamada J. Snow D. Khatidze I. Ripp-baudot A. Meyer Y. Arnoud S. Cihangir Ashok Kumar Fabrice Couderc G. Alkhazov Kirti Ranjan Carsten Hensel Frederic Deliot D. V. Bandurin K. Peters F. Badaud Sung Keun Park Christopher George Tully M. A. Carrasco-lizarraga M. Cooke G. Hesketh Aran Garcia-bellido R. Illingworth M. Pangilinan Mitchell Wayne H. Schellman J. M. Kohli Tulika Bose R. Bernhard W. E. Cooper T. Nunnemann B. Baldin Y. A. Yatsunenko George Alverson N. Osman Y. N. Kharzheev S. J. De Jong P. Skubic B. Spurlock Patrick Slattery Liang Li Jean-arcady Meyer P. Renkel D. Hedin Marc Besancon Stefan Grünendahl Elizaveta Shabalina J. Orduna Zeno Dixon Greenwood L. Bagby D. Onoprienko Viatcheslav Stolin Marco Verzocchi Theodoros Christoudias Dmitri Tsybychev R. L. Mccarthy Lev Dudko H. Nilsen T. H. Burnett Andre Sopczak B. Tuchming G. Otero Y Garzon O. Atramentov J. Sekaric Michael A. Strauss A. Patwa Hwi Dong Yoo Zdenek Hubacek K. M. Chan T. Schliephake A. F. Barfuss Pedro G Mercadante J. A. Benitez T. Dorland Mark Owen V. A. Bezzubov J. P. Negret Victor Daniel Elvira G. S. Muanza Chong-yu Xu V. M. Podstavkov M. Merkin Arnaud Duperrin Carlos Avila S. Beale D. K. Cho P. Lebrun M. Fortner A. Chandra U. Bassler Ulrich Heintz S. Söldner-rembold Avto Kharchilava Marcia Begalli M. Jaffré Joseph Haley M. Buehler A. Croc S. Schlobohm P. N. Ratoff Y. Peters R. Luna-garcia Frank Filthaut Regina Demina Meenakshi Narain Jong-sung Yu Mark Richard James Williams Michael Hildreth Z. Liu W. M. Lee H. Greenlee D. M. Strom S. Eno Ph Gris M. H. Kirby P. M. Tuts Maksym Titov T. Hoang Samuel Calvet M. Diesburg Darren Price M. ĆWiok A. Bross R. Magaña-villalba T. Moulik A. A. Shchukin S. W. Cho G. Obrant Gianluca Petrillo S. Uzunyan Sharon Hagopian Serban Protopopescu Hua-lei Yin Alexander Kupco D. Claes T. Scanlon Guo-ming Chen Guennadi Borissov P. Rich D. Jamin S. Kermiche P. A. Kasper A. Tanasijczuk A. K.a. Maciel M. Arov Shabnam Jabeen Suman Bala Beri M. Aoki Frank Fiedler Andy Haas Grigory Safronov S. Chakrabarti I. Heredia-de La Cruz E. E. Boos E. Kajfasz N. Parua Arnulf Quadt Alexander Khanov V. Hynek Alexander Grohsjean Amnon Harel Heriberto Castilla-valdez Elemer Nagy Jun Guo V. V. Tokmenin G. Facini P. Rubinov R. Piegaia D. Vilanova Randy Ruchti Q. Z. Li Lev Uvarov V. M. Abazov H. A. Neal J. T. Linnemann V. Shary Pushpalatha C Bhat S. Malik Raymond Brock I. Katsanos K. Yip R. Van Kooten Neeti Parashar J. A. Parsons J. F. Bartlett A. Juste R. Unalan J. Osta R. Nayyar W. Geist R. Beuselinck Todd Adams S. Greder L. Stutte Iain Alexander Bertram Robert Kehoe A.s. Dyshkant B. Hoeneisen Lee Sawyer M. Padilla Jiri Kvita Michael Rijssenbeek S. Zelitch D. Wicke D. Gerbaudo Dennis Stephen Mackin I. Razumov M. Zielinski M. D. Corcoran E. Carrera K. Devaughan D. Gillberg J. Hays V. N. Evdokimov M. Rominsky M. Demarteau R. Jesik D. Edmunds K. A. Johns L. Han Zhenyu Ye Yuri Gershtein G. D. Alexeev Flera Rizatdinova E. Camacho-pérez K. Bloom Reinhard Schwienhorst M. Eads Jean-francois Grivaz A. Jonckheere A. Lobodenko Daria Zieminska Yuji Enari R. D. Schamberger Alexey Ferapontov T. R. Wyatt P. Haefner M. Wetstein P. Jonsson Tiefu Zhao S. W. Youn J. K. Kraus D. Buchholz P. L.m. Podesta-lerma Thomas Hebbeker Anna Goussiou Mary Beth Adams Brad Abbott Pierre Petroff Gregory R Snow G. Sajot Y. Hu M. S. Rangel Horst Severini Hakjae Lee Junjie Zhu B. C.k. Casey Richard B. Lipton P. Polozov S. Uvarov Marvin Johnson A. L. Lyon A. V. Kozelov B. Quinn X. B. Bu C. Schwanenberger Alice Bean Christophe Royon Volker Buescher H. D. Wahl Daniel Duggan S. Desai Petr Vokac T. Gadfort B. Calpas M. M. Meijer N. Huske Maria Elena Pol T. Yasuda Harald Fox Dorothee Schaile M. Hohlfeld Wendy Taylor V. Bunichev M. Mulhearn Maiko Takahashi I. A. Vasilyev Vipin Bhatnagar R. Partridge V. L. Malyshev B. S. Acharya R. K. Shivpuri

subject

Physics Quark Nuclear and High Energy Physics Top quark Particle physics 010308 nuclear & particles physics High Energy Physics::Lattice Flavor-changing neutral current Nuclear Theory High Energy Physics::Phenomenology 01 natural sciences 7. Clean energy Bottom quark Gluon Sigma baryon Charm quark Nuclear physics 0103 physical sciences Up quark High Energy Physics::Experiment 010306 general physics

description

We present a search for flavor changing neutral currents via quark-gluon couplings in a sample of single top quark final states corresponding to 2.3 fb(-1) of integrated luminosity collected with the DO detector at the Fermilab Tevatron Collider. We select events containing a single top quark candidates with an additional jet, and obtain separation between signal and background using Bayesian neural networks. We find consistency between background expectation and observed data, and set limits on flavor changing neutral current gluon couplings of the top quark to up quarks (tgu) and charm quarks (tgc). The cross section limits at the 95% C.L. are sigma(tgu) gu) gc) < 3.9 x 10(-3).

year	journal	country	edition	language
2010-09-01	Physics Letters B

https://doi.org/10.1016/j.physletb.2010.08.011