1. W-boson polarization measurement in the tt¯ dilepton channel using the CDF II detector
- Author
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G. Velev, D. Krop, P. Totaro, A. Barbaro-Galtieri, D. Amidei, A. T. Goshaw, P. Mastrandrea, A. Mazzacane, M. Iori, T. Kuhr, W. K. Sakumoto, V. Ramakrishnan, M. N. Mondragon, G. Manca, J. Lueck, Frank Chlebana, Y. Takeuchi, D. E. Pellett, Mario Campanelli, S. Amerio, Christoph Paus, C. Grosso-Pilcher, Paolo Maestro, S. Y. Jun, N. Goldschmidt, Giovanni Bellettini, Aidan Robson, D. P. Benjamin, S. R. Hou, S. Errede, Yasuyoshi Nagai, Francesco Crescioli, I. Oksuzian, V. Saveliev, Stephan Lammel, Lucio Cerrito, E. J. Jeon, W. Ketchum, M. E. Mattson, T. Tomura, S. Pagan Griso, Tetsuo Arisawa, C. Neu, M. I. Martínez, D. J. Cox, A. Di Canto, P. Giannetti, R. Madrak, J. Naganoma, Eva Halkiadakis, T. Miao, Antonio Limosani, D. Chokheli, Y. Kato, Virgil E Barnes, B. Jayatilaka, Kenichi Hatakeyama, Alexander Paramonov, M. Franklin, M. Jones, J. Morlock, J. Guimaraes Da Costa, D. Tonelli, D. Horn, C. Pagliarone, Robin Erbacher, M. Datta, W-M. Yao, K. Gibson, T. Wright, T. Aaltonen, Manfred Paulini, Julia Thom, Lorenzo Santi, A. Eppig, N. Moggi, Xin Wu, Paul Lujan, K. Takemasa, Justin Pilot, I. V. Gorelov, Zhenbin Wu, F. Canelli, E. Thomson, J. C. Freeman, Stanislav Tokár, M. Heck, Peter Wagner, Chuan-Ming Liu, C. M. Ginsburg, W. C. Wester, A. G. Clark, Jian Tang, P. F. Shepard, S. H. Oh, F. Vázquez, A. Ruiz, S. H. Kim, Javier Cuevas, S. Uozumi, G. Punzi, F. Wick, A. Scribano, S. Torre, Roger Moore, D. O. Litvintsev, Adrian Buzatu, P. Murat, Matteo Bauce, M. E. Convery, R. Carosi, Tara Shears, D. Goldin, M. M. Deninno, A. Hocker, G. Chlachidze, S. Leo, P. Catastini, Guido Volpi, A. Anastassov, C. S. Moon, J. C. Yun, K. Yi, Aron Soha, M. Cordelli, G. Busetto, Brian L Winer, F. Margaroli, C. Bromberg, Oliver Stelzer-Chilton, A. Mitra, Maxwell Chertok, L. Nodulman, O. González, Elliot Lipeles, Yongsun Kim, Azeddine Kasmi, J. Asaadi, Mark Kruse, Alison Lister, N. Ranjan, P. Barria, E. James, Naoki Kimura, H. S. Budd, Y. D. Oh, R. McNulty, M. Hare, S. Donati, M. Tecchio, Massimo Casarsa, G. Flanagan, W. H. Hopkins, Itsuo Nakano, Hongfang Liu, Gianluca Introzzi, Sebastian Grinstein, Amitabh Lath, Alan Garfinkel, E. Palencia, M. Corbo, B. A. Barnett, Th. Müller, Giorgio Apollinari, I. Bizjak, J. Vizán, F. D. Snider, J. Y. Han, Giorgio Chiarelli, Sally Seidel, J. Lys, R. Roser, Ivan Vila, K. Knoepfel, J. Conway, E. Lee, Viviana Cavaliere, A. Varganov, C. Calancha, P. McIntyre, K. Sliwa, A. Simonenko, A. Mukherjee, V. Papadimitriou, S. Klimenko, Jacobo Konigsberg, P. B. Renton, S. S. Yu, G. Latino, S. Wolbers, N. Hussain, L. Brigliadori, A. T. Laasanen, A. Aurisano, D. Waters, Keunchang Cho, C. P. Marino, R. Forrest, S. Moed, Teruki Kamon, Y. Zeng, Andrew Beretvas, J. S. Wilson, Markus Frank, N. Giokaris, T. Riddick, R. Culbertson, O. Norniella, Jason Nielsen, Michael Joseph Morello, Sandra Leone, S. W. Lee, S. Zucchelli, Stefano Camarda, J. S. H. Lee, A. Schmidt, G. Compostella, Maria Agnese Ciocci, P. Garosi, J. Strologas, R. F. Harr, P. Sinervo, H. Gerberich, Joe Kroll, R. St. Denis, I. Suslov, Luca Scodellaro, J. Keung, D. Torretta, A. Sukhanov, C. Mesropian, A. Semenov, S. Y. Noh, Kaori Maeshima, S. Hewamanage, Sinead Farrington, Thomas LeCompte, D. Yamato, H. S. Lee, Daniel Whiteson, J. P. Fernandez, F. Ruffini, M. Lindgren, B. Auerbach, G. P. Yeh, S. Carrillo, Koji Sato, A. Napier, C. A. Cox, F. Bedeschi, F. Sforza, Mark Neubauer, Andrea Bocci, Tommaso Dorigo, Teresa Rodrigo, R. Orava, D. Lucchesi, Bernd Stelzer, Tomoko Yoshida, S. Poprocki, M. Dorigo, Y. Sakurai, R. Vilar, M. Stancari, Kevin Lannon, J. N. Bellinger, A. Golossanov, M. dʼErrico, K. S. McFarland, P. J. Bussey, K. R. Bland, Y. Funakoshi, L. Oakes, Jane Nachtman, T. J. Phillips, K. Kondo, A. Pranko, G. Lungu, T. Yang, M. Trovato, R. D. Field, Alessandro Cerri, F. Ptohos, A. Elagin, Jay Dittmann, D. Cauz, Fumihiko Ukegawa, P. Wilson, Michele Gallinaro, J. E. Garcia, D. Hare, M. Kurata, Guillelmo Gomez-Ceballos, J. Antos, I. K. Furic, S. Kwang, J. A. Appel, L. Ortolan, D. H. Kim, M. Hurwitz, A. Boveia, S. R. Hahn, Chen Zhou, Andrew Ivanov, Peter Wittich, M. DellʼOrso, Ignacio Redondo, Hyun-Chul Kim, L. Pondrom, E. Wicklund, Kevin Burkett, G. Pauletta, A. Loginov, A. B. Wicklund, K. Tollefson, K. K. Joo, Yi Chen, P. Squillacioti, Kazuhiko Hara, J. Patrick, Daniela Bortoletto, P. E. Karchin, D. W. Jang, Erik Brücken, M. Mussini, Jochen Jens Heinrich, Y. C. Yang, Christopher Clarke, Fedor Prokoshin, G. A. Thompson, K. T. Pitts, E. E. Schmidt, N. Ershaidat, Q. Liu, S. Lami, Matteo Cavalli-Sforza, D. Stentz, D. Dagenhart, Elisabetta Pianori, A. V. Kotwal, I. Yu, T. Okusawa, I. Shreyber-Tecker, E. Rogers, Thomas Schwarz, M. Campbell, W. H. Chung, Song-Ming Wang, F. Azfar, Ricardo Eusebi, Gervasio Gomez, J. Huston, Y. S. Chung, Aurore Savoy-Navarro, K. Matera, A. Penzo, A. Artikov, Michal Kreps, G. Piacentino, P. Mehtala, F. Devoto, S. Carron, Pavol Bartos, E. Gerchtein, M. J. Kim, Duncan Carlsmith, Rainer Wallny, T. R. Junk, J. Yoh, B. Casal, G. L. Strycker, M. J. Shochet, Matthew Herndon, V. V. Glagolev, G. Giurgiu, Koji Yamamoto, A. Manousakis-Katsikakis, P. K. Teng, M. Hussein, S. Rolli, Benjamin Kilminster, W. Ashmanskas, S. Lockwitz, Sudhir Malik, Barry Blumenfeld, V. Rusu, M. Lancaster, M. Gold, Maria Rescigno, H. Wolfe, P. Movilla Fernandez, B. Di Ruzza, Chi Lin, P. Mazzanti, J. R. Smith, G. B. Yu, Shalhout Shalhout, Hao Song, S. Behari, J. Boudreau, K. Ebina, Young-Jin Kim, T. Wakisaka, N. dʼAscenzo, Maxim Goncharov, A. Hamaguchi, D. Mietlicki, Vyacheslav Krutelyov, R. L. Wagner, L. Demortier, K. Goulianos, P. N. Dong, T. Bae, S. B. Kim, P. de Barbaro, D. Toback, W. Badgett, M. Shimojima, Andreas Warburton, H. H. Williams, Andrea Castro, U. Husemann, B. Álvarez González, A. M. Zanetti, K. Potamianos, Sergo Jindariani, J. Budagov, R. L. Lander, D. J. Kong, B. Carls, V. Sorin, P. Lukens, Franco Rimondi, Y. Sudo, Chris Hays, M. Kirby, Marcelo Vogel, C. Plager, J. Nett, Stefano Giagu, Alexei Safonov, J. D. Lewis, Alberto Annovi, V. Khotilovich, Y. Seiya, J. E. Kim, R. E. Hughes, T. Rodriguez, Fabrizio Scuri, V. A. Giakoumopoulou, A. Rahaman, Luciano Ristori, Tiehui Liu, U. K. Yang, H. Miyake, F. Happacher, Dario Bisello, A. Bhatti, Ankita Mehta, Roman Lysak, M. Vidal, S. Wilbur, Aristotle Calamba, C. Vellidis, P. Giromini, Arie Bodek, M. Feindt, P. Schlabach, James Russ, Kohei Yorita, D. Glenzinski, J. Thome, and M. DʼOnofrio
- Subjects
Physics ,Nuclear and High Energy Physics ,Particle physics ,010308 nuclear & particles physics ,High Energy Physics::Phenomenology ,Detector ,Tevatron ,Astrophysics::Cosmology and Extragalactic Astrophysics ,Polarization (waves) ,01 natural sciences ,Nuclear physics ,0103 physical sciences ,High Energy Physics::Experiment ,Astrophysics::Earth and Planetary Astrophysics ,Nuclear Experiment ,010306 general physics ,Boson ,Lepton - Abstract
We present a measurement of W boson polarization in top-quark decays in t{bar t} events with decays to dilepton final states using 5.1 fb{sup -1} integrated luminosity in p{bar p} collisions collected by the CDF II detector at the Tevatron. A simultaneous measurement of the fractions of longitudinal (f{sub 0}) and right-handed (f{sub +}) W bosons yields the results f{sub 0} = 0.71{sub -0.17}{sup +0.18}(stat) {+-} 0.06(syst) and f{sub +} = -0.07 {+-} 0.09(stat) {+-} 0.03(syst). Combining this measurement with our previous result based on single lepton final states, we obtain f{sub 0} = 0.84 {+-} 0.09(stat) {+-} 0.05(syst) and f{sub +} = -0.16 {+-} 0.05(stat) {+-} 0.04(syst). The results are consistent with standard model expectation.
- Published
- 2013
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