Search for anomalous Wtb couplings in single top quark production in collisions at

We present new direct constraints on a general Wtb interaction using data corresponding to an integrated luminosity of 5.4 fb-1 collected by the D0 detector at the Tevatron p p [macr] collider. The standard model provides a purely left-handed vector coupling at the Wtb vertex, while the most general...

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Bibliographic Details
Published in:Physics letters. B 2012-02, Vol.708 (1-2), p.21-26
Main Authors: Alexeev, G D, Aoki, M, Augsten, K, Avila, C, Bandurin, D V, Bartlett, J F, Bazterra, V, Belanger-Champagne, C, Bellantoni, L, Beuselinck, R, Bhat, P C, Buehler, M, Carrasco-Lizarraga, MA, Cho, S W, Clutter, J, Cooper, W E, Couderc, F, Cousinou, M-C, de Jong, SJ, Diehl, H T, Ding, P F, Dominguez, A, Eads, M, Edmunds, D, Ellison, J, Elvira, V D, Fisk, HE, tner, M, Fuess, S, Garcia-Guerra, G A, Geng, W, Gerbaudo, D, Gershtein, Y, Ginther, G, Golovanov, G, Goussiou, A, Greder, S, Grohsjean, A, Gruenewald, M W, Haley, J, Han, L, Harder, K, Hays, J, Head, T, Hedin, D, Hubacek, Z, Illingworth, R, Jabeen, S, Johns, K, Juste, A, Karmanov, D, Kermiche, S, Kozelov, A V, Kulikov, S, Kumar, A, Lyon, AL, Maciel, AKA, Malyshev, V L, Maravin, Y, Menezes, D, Mercadante, P G, Mulhearn, M, Narain, M, Nayyar, R, Neal, HA, Osta, J, Parihar, V, Perfilov, M, Qian, J, Ranjan, K, Renkel, P, Ripp-Baudot, I, Salcido, P, Sanghi, B, Savage, G, Sawyer, L, Schamberger, R D, Shabalina, E, Smith, K J, Stolin, V, Stutte, L, Takahashi, M, Tschann-Grimm, K, Tuchming, B, Uvarov, S, Van Kooten, R, Verzocchi, M, Wahl, H D, Wang, MHLS, Warchol, J, Watts, G, Welty-Rieger, L, White, A, Wicke, D, Wilson, G W, Xie, Y, Yatsunenko, YA, Yip, K, Zhao, T, Zhu, J
Format: Article
Language:English
Subjects:
Collisions
Couplings
Elementary particles
Joining
Luminosity
Mathematical analysis
Vectors (mathematics)
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Summary:We present new direct constraints on a general Wtb interaction using data corresponding to an integrated luminosity of 5.4 fb-1 collected by the D0 detector at the Tevatron p p [macr] collider. The standard model provides a purely left-handed vector coupling at the Wtb vertex, while the most general, lowest dimension Lagrangian allows right-handed vector and left- or right-handed tensor couplings as well. We obtain precise limits on these anomalous couplings by comparing the data to the expectations from different assumptions on the Wtb coupling.
ISSN:0370-2693
DOI:10.1016/j.physletb.2012.01.014