Search for s -Channel Single-Top-Quark Production in Events with Missing Energy Plus Jets in p p ¯ Collisions at s=1.96TeV

The first search for single-top-quark production from the exchange of an s -channel virtual W boson using events with an imbalance in the total transverse energy, b -tagged jets, and no identified leptons is presented. Assuming the electroweak production of top quarks of mass 172.5 GeV / c 2 in the...

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Veröffentlicht in:	Physical review letters 2014-06, Vol.112 (23)
Hauptverfasser:	Aaltonen, T., Anastassov, A., Appel, J. A., Auerbach, B., Bhatti, A., Brucken, E., Budagov, J., Cerri, A., Cerrito, L., Cho, K., Clark, A., Cox, D. J., D’Errico, M., Dittmann, J. R., Donati, S., Driutti, A., Erbacher, R., Flanagan, G., Franklin, M., Freeman, J. C., Garfinkel, A. F., Ginsburg, C. M., Giromini, P., Giurgiu, G., Goncharov, M., Gramellini, E., Guimaraes da Costa, J., Hahn, S. R., Happacher, F., Hare, M., Hong, Z., Jayatilaka, B., Jeon, E. J., Junk, T. R., Kamon, T., Kasmi, A., Kilminster, B., Kondo, K., Kuhr, T., Kurata, M., Lancaster, M., Lee, J. S., Lewis, J. D., Liu, T., Lucà, A., Lueck, J., Lujan, P., Madrak, R., Malik, S., Matera, K., McNulty, R., Mesropian, C., Miao, T., Morello, M. J., Murat, P., Napier, A., Nodulman, L., Noh, S. Y., Oksuzian, I., Okusawa, T., Papadimitriou, V., Parker, W., Pauletta, G., Potamianos, K., Prokoshin, F., Robson, A., Rodriguez, T., Rolli, S., Ruffini, F., Ruiz, A., Sakumoto, W. K., Sakurai, Y., Savoy-Navarro, A., Schlabach, P., Schwarz, T., Semenov, A., Shepard, P. F., Sliwa, K., Smith, J. R., Stancari, M., Stentz, D., Sukhanov, A., Suslov, I., Takeuchi, Y., Teng, P. K., Thom, J., Tokar, S., Tomura, T., Torre, S., Volpi, G., Wagner, P., Wester, W. C., Whiteson, D., Wicklund, A. B., Wilbur, S., Yang, Y. C., Yoh, J., Yoshida, T., Zanetti, A. M., Zhou, C.
Format:	Artikel
Sprache:	eng
Schlagworte:	PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
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Zusammenfassung:	The first search for single-top-quark production from the exchange of an s -channel virtual W boson using events with an imbalance in the total transverse energy, b -tagged jets, and no identified leptons is presented. Assuming the electroweak production of top quarks of mass 172.5 GeV / c 2 in the s channel, a cross section of 1.1 2 $+ 0.61\atop{- 0.57}$ ( stat + syst ) pb with a significance of 1.9 standard deviations is measured. This measurement is combined with the result obtained from events with an imbalance in total transverse momentum, b -tagged jets, and exactly one identified lepton, yielding a cross section of 1.3 6$+ 0.37\atop{- 0.32}$ ( stat + syst ) pb, with a significance of 4.2 standard deviations.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.112.231805