Forward-backward asymmetry in top-quark production in pp[over] collisions at sqrt[s]=1.96 TeV.

  title={Forward-backward asymmetry in top-quark production in pp[over] collisions at sqrt[s]=1.96 TeV.},
  author={Timo. Aaltonen and Jahred Adelman and Takuma Akimoto and Michael G. Albrow and B. Alvarez Gonzalez and Silvia Amerio and Dante Amidei and Anton Anastassov and Alberto Annovi and John Antos and Giorgio Apollinari and Artur. Apresyan and Tatsuya Arisawa and Akmal Artikov and W. Ashmanskas and Aline Attal and Adam Aurisano and Feroz Azfar and Paolo Azzurri and William F. Badgett and Angela Barbaro-Galtieri and V. E. Barnes and Bruce A. Barnett and Valeria Bartsch and G{\"u}nther Bauer and P R Beauchemin and Franco Bedeschi and Peter. Bednar and Deirdre Beecher and Satyajit Behari and Giovanni Bellettini and Jane Bellinger and David Benjamin and A. Beretvas and Juerg Beringer and Ambreen Bhatti and Margaret Binkley and D. Bisello and I. Bizjak and Robert Blair and Craig Blocker and Barak Blumenfeld and Adriano Bocci and Arie Bodek and Val{\'e}rie Boisvert and Gino Bolla and Daniela Bortoletto and James Boudreau and Antonio Boveia and Benjamin Brau and Adam Bridgeman and L. Brigliadori and Carolina Ritter Bromberg and Erik Brubaker and J. A. Budagov and Howard S. Budd and Simon Budd and Kevin Burkett and Giuseppe Busetto and Peter Bussey and Alina Mihaela Buzatu and Karen L. Byrum and Susana Cabrera and Constantino Calancha and Michele Campanelli and Maureen Campbell and Florencia Canelli and Alexandra Canepa and Duncan Carlsmith and Rodolfo Carosi and Simone Carrillo and St{\'e}phane Carron and Bruno Casal and M. Casarsa and Alberto Hidalgo Castro and Pierluigi Catastini and D. Cauz and Viviana Cavaliere and M. Cavalli-Sforza and Andrea Cerri and Lucio Cerrito and Seo Hyoung Chang and Y. C. Chen and Maxwell Chertok and Giorgio Chiarelli and Guram Chlachidze and Frank Chlebana and Ki Hun Cho and D. Chokheli and John Paul Chou and Georgios Choudalakis and S. H. Chuang and K. Chung and W. H. Chung and Y. S. Chung and Th Chwalek and Catalin I. Ciobanu and M. A. Ciocci and A. G. Clark and David Clark and G. Compostella and Mary E. Convery and J. Kimmel K. S. Conway and K. Copic and M. Cordelli and Giorgio Cortiana and Darcy Cox and F. Crescioli and C. Cuenca Almenar and J Daniel Cuevas and Ray Culbertson and James Cully and David Dagenhart and M. Vyshnava Datta and Tesni Davies and P. de Barbaro and S. De Cecco and Amanda J Deisher and Gianluca de Lorenzo and Mauro Dell'Orso and Cecelia DeLuca and Luc Demortier and Jing-ti Deng and M. M. Deninno and Paul F. Derwent and Giuseppina di Giovanni and Carla Dionisi and B. Di Ruzza and Jay R. Dittmann and M D'onofrio and Stefano Donati and P. Dong and J. Donini and Tommaso Dorigo and S. Dube and Jonathan Efron and Andrey Elagin and Robert Erbacher and Deborah Errede and Steven M Errede and R. Eusebi and H C Fang and Stephanie Farrington and Wojtek Fedorko and R. G. Feild and Michael Feindt and J. -M. Pou Fernandez and C. Ferrazza and Robert Field and Gene Flanagan and Robyn E. Forrest and Melissa Franklin and James C Freeman and Ivan K. Furi{\'c} and Michele Gallinaro and J E Galyardt and Ford Garberson and J. E. Mu{\~n}oz Garcia and Amanda Garfinkel and Krzysztof Genser and Heather K Gerberich and David W. Gerdes and Arthur Gessler and Stefano Giagu and V. Giakoumopoulou and Paola Giannetti and Kyle Gibson and J. L. Gimmell and C. M. Ginsburg and Nikos Giokaris and Maria Giordani and P. Giromini and Marina Giunta and Gavril Giurgiu and V E Glagolev and Doug Glenzinski and Martin Gold and Nils Goldschmidt and A. Golossanov and Gilberto Guzm{\'a}n Valdivia G{\'o}mez and Guillelmo G{\'o}mez-Ceballos and Max Goncharov and Oscar Gonz{\'a}lez and I. A. Gorelov and Alfred T. Goshaw and Konstantin Goulianos and Amanda Dal Piva Gresele and S. Grinstein and Carla Grosso-Pilcher and U. Grundler and J. Barreiro Guimar{\~a}es da Costa and Z. Gunay-Unalan and C. Haber and K. Hahn and Steve R. Hahn and Eva Halkiadakis and B. Han and Joyce Ya-chi Han and Robert Handler and F. Happacher and Kazuhiko Hara and D H Hare and Michael C. Hare and Sandra Harper and Randolph Harr and Robert M. Harris and Matthew Hartz and Kenichi Hatakeyama and Jay F Hauser and Christopher Hays and Marcus Heck and Aart J. Heijboer and Bernhard Heinemann and Joel G. Heinrich and Christian Henderson and Marvin Herndon and J R Heuser and Samantha Hewamanage and D. Hidas and Christopher S. Hill and Dominic Hirschb{\"u}hl and Andy Hocker and S. Q. Hou and M. A. Houlden and S C Hsu and B. Todd Huffman and Richard E. Hughes and Ulrich Husemann and Joey Huston and Joseph R. Incandela and Gian Luigi Introzzi and Marina Iori and Alexander Ivanov and Eric James and Bodhitha Jayatilaka and E. J. Jeon and Manoj Kumar Jha and Sergo Jindariani and Walter E. Johnson and M. D. Jones and K. K. Joo and Sangmi Jun and Ji Jung and Thomas R. Junk and Teruki Kamon and Debashis Kar and P. E. Karchin and Yoshinari Kato and R. Kephart and J. Keung and Vadim Khotilovich and Benjamin Kilminster and Do-Hyung Kim and Heung Sik Kim and Jihn E. Kim and Mun Ju Kim and S. B. Kim and S. H. Kim and Yejoon Kim and Naoki Kimura and Leo E. Kirsch and Sergey A. Klimenko and Bruce Knuteson and Bumsuk Ko and Sue Ann Koay and Kazuo Kondo and David Kong and Jacob 0 Konigsberg and Andrey Korytov and Ashutosh V. Kotwal and Michal Kreps and Joseph Kroll and Dan Krop and N. Krumnack and Mark Kruse and Vyacheslav Krutelyov and Takayuki Kubo and T. Kuhr and Nandkumar P. Kulkarni and Masanao Kurata and Yasushi Kusakabe and Stan Kwang and A. T. Laasanen and S. Skali Lami and S. Lammel and Mark Lancaster and Roger Lander and Kevin Lannon and Amitabh Lath and Giuseppe Latino and Ignazio Lazzizzera and T. J. LeCompte and E. Lee and Seungah Lee and Sandra Leone and Jordan D. Lewis and Ching-shwun Lin and Jacob Linacre and Monica Lindgren and Elliot Lipeles and Alison Lister and Dmitry Litvintsev and C. H. Liu and Tiehui Liu and N. S. Lockyer and Andrey Loginov and Mi hele Loreti and L{\'a}szl{\'o} Lovas and R Z Lu and D. Lucchesi and J. J. Lueck and Claudio Luci and P. J. Lujan and P. Lukens and Gina Lungu and L. Lyons and J. E. Lys and R. Lysak and Else Lytken and Patrick Mack and David MacQueen and R. Madrak and Kaori Maeshima and Khaldoun Makhoul and Takuya Maki and Petar Maksimovic and Sachit Malde and Suleman Malik and Germana Manca and A. Manousakis-Katsikakis and Fabrizio Margaroli and Concettina Marino and Adam Martin and V. D{\'i}az Mart{\'i}n and M. Carmen Mart{\'i}nez and R Mart{\'i}nez-Ballar{\'i}n and Toshiki Maruyama and P. Mastrandrea and Tsugunosuke Masubuchi and Mark E Mattson and Paolo Mazzanti and Kevin S Mcfarland and P. M. McIntyre and R Mcnulty and Andrew Mehta and P. Mehtala and A. Menzione and Petra Merkel and Christina Mesropian and Tiejun Miao and Nenad Miladinovic and R. Quentin Miller and Catherine Mills and M. Milnik and Abhas Mitra and Gena Mitselmakher and Hideaki Miyake and N. Moggi and C. S. Moon and R. Moore and Michelle Morello and Juergen Morlok and Pedro A. Movilla Fern{\'a}ndez and Johannes M{\"u}lmenst{\"a}dt and Asmita Mukherjee and T G Muller and Richard Mumford and Pavel Murat and M F Mussini and Jane Nachtman and Yuki Nagai and Aya Nagano and J. Naganoma and Kensuke Nakamura and Itsuo Nakano and A. Napier and Violeta Necula and Corey Neu and M. S. Neubauer and Jason Nielsen and Larry Nodulman and Marc. Norman and O. Norniella and Emily Nurse and Linda Oakes and S. H. Oh and Yoon Ah Oh and I. Oksuzian and T. Okusawa and Risto Orava and Kris L Osterberg and Simone Pagan Griso and Carmine Pagliarone and E. Sanchez - Palencia and Vaia Papadimitriou and A A Papaikonomou and A. A. Paramonov and Beth Parks and Sarvin Pashapour and J. Michael Patrick and G. Pauletta and Manfred Paulini and Christoph Paus and Th Peiffer and D. E. Pellett and Aldo Penzo and Thomas J. Phillips and Giorgia Piacentino and E. Pianori and L. Pinera and Kevin T. Pitts and C. L. Plager and L. Pondrom and O. Poukhov and Neill M Pounder and F. Prakoshyn and A. G. Pronko and Jeffry Proudfoot and F. Ptohos and Eric Pueschel and Giovanni Punzi and Jessica Pursley and Jonas Rademacker and A Abdul Rahaman and Venkatessh Ramakrishnan and Nihar M. Ranjan and Ignacio Redondo and Burkard Reisert and Vladimir Rekovic and P. Renton and M. Rescigno and Stefan Richter and F. Rimondi and Luciano Ristori and Alexander J Robson and T. Deshani Rodrigo and Tania Rodr{\'i}guez and Emma Rogers and Simona Rolli and Robert Roser and Massimiliano Rossi and Richard. Rossin and Pradip Roy and Amparo Ruiz and James S. Russ and Viorel Rusu and H. Saarikko and Alexei Safonov and W. K. Sakumoto and O. Salt{\'o} and Lucio Santi and Subir Sarkar and Luigi Sartori and Kazuki Sato and Aurore Savoy-Navarro and T. Scheidle and P. Schlabach and Annemarie Schmidt and Eggert Schmidt and Markus A. Schmidt and Marcus Peter Schmidt and Michael Schmitt and Thomas A. Schwarz and L. Scodellaro and Andrea L. Scott and A. Scribano and Fabrizio Scuri and A. G. Sedov and Sally Seidel and Y. Seiya and A. R. Semenov and L. Sexton-Kennedy and A. Sfyrla and Shalhout Zaki Shalhout and Tara Shears and P. F. Shepard and Dov Sherman and M. Shimojima and Satoshi Shiraishi and M. J. Shochet and Yoon Shon and I. Shreyber and Antonio Sidoti and P. Sinervo and A. N. Sisakyan and Aubrey J Slaughter and Jm Slaunwhite and Krzysztof Sliwa and Jim R. Smith and Frederick D. Snider and R. Snihur and A. Soha and S. V. Somalwar and V. Sorin and Jon Spalding and T. Spreitzer and P. Squillacioti and Marcel Stanitzki and Romain S Denis},
  journal={Physical review letters},
  volume={101 20},
We present measurements of the forward-backward charge asymmetry in top pair production using 1.9 fb;{-1} of pp[over ] collisions at sqrt[s]=1.96 TeV recorded with the Collider Detector at Fermilab II. Correcting for acceptance and measurement dilutions we obtain parton-level asymmetries of A_{FB};{pp[over ]}=0.17+/-0.08 in the pp[over ] frame and A_{FB};{tt[over ]}=0.24+/-0.14 in the tt[over ] frame. The values are consistent with the standard model expectation and disfavor exotic production… CONTINUE READING