@article{3156728,
    title = "Observation of the Production of a W Boson in Association with a Single
Charm Quark",
    author = "Aaltonen, T. and Amerio, S. and Amidei, D. and Anastassov, A. and and Annovi, A. and Antos, J. and Apollinari, G. and Appel, J. A. and and Arisawa, T. and Artikov, A. and Asaadi, J. and Ashmanskas, W. and and Auerbach, B. and Aurisano, A. and Azfar, F. and Badgett, W. and Bae, T. and and Barbaro-Galtieri, A. and Barnes, V. E. and Barnett, B. A. and and Barria, P. and Bartos, P. and Bauce, M. and Bedeschi, F. and Behari, S. and and Bellettini, G. and Bellinger, J. and Benjamin, D. and Beretvas, A. and and Bhatti, A. and Bland, K. R. and Blumenfeld, B. and Bocci, A. and and Bodek, A. and Bortoletto, D. and Boudreau, J. and Boveia, A. and and Brigliadori, L. and Bromberg, C. and Brucken, E. and Budagov, J. and and Burkett, K. and Busetto, G. and Bussey, P. and Butti, P. and Buzatu, A. and and Calamba, A. and Camarda, S. and Campanelli, M. and Canelli, F. and and Carls, B. and Carlsmith, D. and Carosi, R. and Carrillo, S. and Casal, and B. and Casarsa, M. and Castro, A. and Catastini, P. and Cauz, D. and and Cavaliere, V. and Cavalli-Sforza, M. and Cerri, A. and Cerrito, L. and and Chen, Y. C. and Chertok, M. and Chiarelli, G. and Chlachidze, G. and and Cho, K. and Chou, J. P. and Chokheli, D. and Clark, A. and Clarke, C. and and Convery, M. E. and Conway, J. and Corbo, M. and Cordelli, M. and and Cox, C. A. and Cox, D. J. and Cremonesi, M. and Cuevas, J. and and Culbertson, R. and d'Ascenzo, N. and Datta, M. and Demortier, L. and and Deninno, M. and Devoto, F. and d'Errico, M. and Di Canto, A. and Di and Ruzza, B. and Dittmann, J. R. and D'Onofrio, M. and Donati, S. and and Dorigo, M. and Driutti, A. and Ebina, K. and Edgar, R. and Elagin, A. and and Erbacher, R. and Errede, S. and Esham, B. and Eusebi, R. and and Farrington, S. and Fernandez Ramos, J. P. and Field, R. and Flanagan, G. and and Forrest, R. and Franklin, M. and Freeman, J. C. and Funakoshi, Y. and and Garfinkel, A. F. and Garosi, P. and Gerberich, H. and Gerchtein, E. and and Giagu, S. and Giakoumopoulou, V. and Gibson, K. and Ginsburg, C. M. and and Giokaris, N. and Giromini, P. and Giurgiu, G. and Glagolev, V. and and Glenzinski, D. and Gold, M. and Goldin, D. and Goldschmidt, N. and and Golossanov, A. and Gomez, G. and Gomez-Ceballos, G. and Goncharov, M. and and Gonzalez Lopez, O. and Gorelov, I. and Goshaw, A. T. and Goulianos, and K. and Gramellini, E. and Grinstein, S. and Grosso-Pilcher, C. and and Group, R. C. and da Costa, J. Guimaraes and Hahn, S. R. and Han, J. Y. and and Happacher, F. and Hara, K. and Hare, M. and Harr, R. F. and and Harrington-Taber, T. and Hatakeyama, K. and Hays, C. and Heinrich, J. and and Herndon, M. and Hocker, A. and Hopkins, W. and Hou, S. and Hughes, and R. E. and Hurwitz, M. and Husemann, U. and Huston, J. and Introzzi, G. and and Iori, M. and Ivanov, A. and James, E. and Jang, D. and Jayatilaka, and B. and Jeon, E. J. and Jindariani, S. and Jones, M. and Joo, K. K. and and Jun, S. Y. and Junk, T. R. and Kambeitz, M. and Kamon, T. and Karchin, and P. E. and Kasmi, A. and Kato, Y. and Ketchum, W. and Keung, J. and and Kilminster, B. and Kim, D. H. and Kim, H. S. and Kim, J. E. and Kim, M. and J. and Kim, S. B. and Kim, S. H. and Kim, Y. K. and Kim, Y. J. and and Kimura, N. and Kirby, M. and Klimenko, S. and Knoepfel, K. and Kondo, K. and and Kong, D. J. and Konigsberg, J. and Kotwal, A. V. and Kreps, M. and and Kroll, J. and Krop, D. and Kruse, M. and Kuhr, T. and Kurata, M. and and Kwang, S. and Laasanen, A. T. and Lammel, S. and Lancaster, M. and and Lannon, K. and Latino, G. and Lee, H. S. and Lee, J. S. and Leone, S. and and Lewis, J. D. and Limosani, A. and Lipeles, E. and Liu, H. and Liu, and Q. and Liu, T. and Lockwitz, S. and Loginov, A. and Lucchesi, D. and and Lueck, J. and Lujan, P. and Lukens, P. and Lungu, G. and Lys, J. and and Lysak, R. and Madrak, R. and Maestro, P. and Malik, S. and Manca, G. and and Manousakis-Katsikakis, A. and Margaroli, F. and Martinez, M. and Matera, and K. and Mattson, M. E. and Mazzacane, A. and Mazzanti, P. and McNulty, R. and and Mehta, A. and Mehtala, P. and Mesropian, C. and Miao, T. and and Mietlicki, D. and Mitra, A. and Miyake, H. and Moed, S. and Moggi, N. and and Moon, C. S. and Moore, R. and Morello, M. J. and Mukherjee, A. and and Muller, Th. and Murat, P. and Mussini, M. and Nachtman, J. and Nagai, Y. and and Naganoma, J. and Nakano, I. and Napier, A. and Nett, J. and Neu, C. and and Nigmanov, T. and Nodulman, L. and Noh, S. Y. and Norniella, O. and and Oakes, L. and Oh, S. H. and Oh, Y. D. and Oksuzian, I. and Okusawa, T. and and Orava, R. and Ortolan, L. and Pagliarone, C. and Palencia, E. and and Palni, P. and Papadimitriou, V. and Parker, W. and Pauletta, G. and and Paulini, M. and Paus, C. and Phillips, T. J. and Piacentino, G. and and Pianori, E. and Pilot, J. and Pitts, K. and Plager, C. and Pondrom, L. and and Poprocki, S. and Potamianos, K. and Prokoshin, F. and Pranko, A. and and Ptohos, F. and Punzi, G. and Ranjan, N. and Redondo Fernandez, I. and and Renton, P. and Rescigno, M. and Riddick, T. and Rimondi, F. and Ristori, and L. and Robson, A. and Rodriguez, T. and Rolli, S. and Ronzani, M. and and Roser, R. and Rosner, J. L. and Ruffini, F. and Ruiz, A. and Russ, J. and and Rusu, V. and Safonov, A. and Sakumoto, W. K. and Sakurai, Y. and and Santi, L. and Sato, K. and Saveliev, V. and Savoy-Navarro, A. and and Schlabach, P. and Schmidt, E. E. and Schwarz, T. and Scodellaro, L. and and Seidel, S. and Seiya, Y. and Semenov, A. and Sforza, F. and Shalhout, S. and Z. and Shears, T. and Shepard, P. F. and Shimojima, M. and Shochet, M. and and Shreyber-Tecker, I. and Simonenko, A. and Sinervo, P. and Sliwa, K. and and Smith, J. R. and Snider, F. D. and Sorin, V. and Song, H. and and Stancari, M. and Denis, R. St. and Stelzer, B. and Stelzer-Chilton, O. and and Stentz, D. and Strologas, J. and Sudo, Y. and Sukhanov, A. and and Suslov, I. and Takemasa, K. and Takeuchi, Y. and Tang, J. and Tecchio, and M. and Teng, P. K. and Thom, J. and Thomson, E. and Toback, D. and and Tokar, S. and Tollefson, K. and Tomura, T. and Tonelli, D. and Torre, S. and and Torretta, D. and Totaro, P. and Trovato, M. and Ukegawa, F. and and Uozumi, S. and Vazquez, F. and Velev, G. and Vellidis, C. and Vernieri, and C. and Vidal, M. and Vilar, R. and Vizan, J. and Vogel, M. and Volpi, G. and and Wagner, P. and Wallny, R. and Wang, S. M. and Warburton, A. and and Waters, D. and Wester, III, W. C. and Whiteson, D. and Wicklund, A. B. and and Wilbur, S. and Williams, H. H. and Wilson, J. S. and Wilson, P. and and Winer, B. L. and Wittich, P. and Wolbers, S. and Wolfe, H. and Wright, and T. and Wu, X. and Wu, Z. and Yamamoto, K. and Yamato, D. and Yang, T. and and Yang, U. K. and Yang, Y. C. and Yao, W. -M. and Yeh, G. P. and Yi, and K. and Yoh, J. and Yorita, K. and Yoshida, T. and Yu, G. B. and Yu, I. and and Zanetti, A. M. and Zeng, Y. and Zhou, C. and Zucchelli, S. and CDF and Collaboration",
    journal = "Physical Review and Physical Review Letters Index",
    year = "2013",
    volume = "110",
    number = "7",
    publisher = "AMER PHYSICAL SOC",
    issn = "0094-0003",
    doi = "10.1103/PhysRevLett.110.071801",
    abstract = "The first observation of the production of a W boson with a single charm
quark (c) jet in p (p) over bar collisions at root s = 1.96 TeV is
reported. The analysis uses data corresponding to 4.3 fb(-1), recorded
with the CDF II detector at the Fermilab Tevatron. Charm quark
candidates are selected through the identification of an electron or
muon from charm-hadron semileptonic decay within a hadronic jet, and a
Wc signal is observed with a significance of 5.7 standard deviations.
The production cross section sigma(Wc) (p(Tc) > 20 GeV/c, vertical bar
eta(c)vertical bar < 1.5) x B(W -> l nu) is measured to be
13.6(-3.1)(+3.4) pb and is in agreement with theoretical expectations.
From this result the magnitude of the quark-mixing matrix element V-cs
is derived, vertical bar V-cs vertical bar = 1.08 +/- 0.16 along with a
lower limit of vertical bar V-cs vertical bar > 0.71 at the 95%
confidence level, assuming that the Wc production through c to s quark
coupling is dominant. DOI: 10.1103/PhysRevLett.110.071801"
}