| Autor: |
Fedor Prokoshin, Miguel Vidal Marono, Michael Joseph Morello, Aidan Robson, Hyun Su Lee, Gervasio Gomez, Arie Bodek, Yuki Sakurai, Chang-Seong Moon, Diego Cauz, Chris Hays, Giuseppe Latino, Prabhakar Palni, Alison Lister, Paolo Giromini, James Russ, Francisco Javier Cuevas Maestro, Elisabetta Pianori, Evelyn Thomson, Jesus Manuel Vizan Garcia, Florencia Canelli, Angelo Di Canto, YOSHIKAZU NAGAI, William Wester, Alessandro Cerri, David Toback, Jay R. Dittmann, Stefano Torre, Fabrizio Margaroli, Zhenbin Wu, Sebastian Grinstein, Alexander Simonenko, Diego Tonelli, Caterina Vernieri, Matteo Cremonesi, Gianluca Introzzi, Makoto Shimojima, Nicola D'Ascenzo, Francesco Devoto, Giovanni Punzi, Roman Lysak, Oscar Gonzalez Lopez, Anna Mazzacane, Sinead Farrington, Giovanni Busetto, Andrew Ivanov, Massimo Casarsa, Irina Shreyber, Xin Wu, Jens Erik Brücken, Fabrizio Ruffini, Hao Song, GIULIA MANCA, Franco Bedeschi, Alberto Ruiz Jimeno, Patrizia Barria, Melissa Franklin, Tara Shears, Stefano Giagu, Ignacio Redondo, Mirco Dorigo, Manfred Paulini, Kevin Lannon, Jose Enrique Palencia Cortezon, Igor Gorelov, Rainer Wallny, Paolo Maestro, Giovanni Maria :Piacentino, Maurizio Iori, Walter Hopkins, MARIO MARTINEZ, Soon Yung Jun, Luc Demortier, Karolos Potamianos, Patrick Lukens, Matteo Bauce, Robert Group, Giorgio Chiarelli, Luca Scodellaro, Fotios Ptochos, Stefano Camarda, Federico Sforza, Koji Sato, Guillelmo Gomez-Ceballos, Benjamin Kilminster, Krzysztof Sliwa, Kohei Yorita, Pietro Marino, Eunju Jeon, Matthew Herndon, Mohd Hussein, Mark Lancaster |
| Rok vydání: |
2014 |
| Předmět: |
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| Zdroj: |
Physical Review Letters. 112 |
| ISSN: |
1079-7114
0031-9007 |
| Popis: |
We present a measurement of the ratio of the top-quark branching fractions R=B(t→Wb)/B(t→Wq), where q represents any quark flavor, in events with two charged leptons, imbalance in total transverse energy, and at least two jets. The measurement uses proton-antiproton collision data at center-of-mass energy 1.96 TeV, corresponding to an integrated luminosity of 8.7 fb^{-1} collected with the Collider Detector at Fermilab during Run II of the Tevatron. We measure R to be 0.87±0.07, and extract the magnitude of the top-bottom quark coupling to be |V_{tb}|=0.93±0.04, assuming three generations of quarks. Under these assumptions, a lower limit of |V_{tb}|>0.85(0.87) at 95% (90%) credibility level is set. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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