The European Physical Journal C

, Volume 54, Issue 3, pp 435–441 | Cite as

Polarized single top quark production in eγ collision and anomalous Wtb couplings

Regular Article - Theoretical Physics

Abstract

We investigate the potential of eγ collisions to probe anomalous Wtb couplings via the polarized single top quark production process e+γ→tb̄νē. We find 95% confidence level limits on the anomalous coupling parameters F2L and F2R with an integrated luminosity of 500 fb-1 and \(\sqrt{s}=0.5\), 1 and 1.5 TeV energies. The effects of top quark spin polarization on the anomalous Wtb couplings are discussed. It is shown that polarization leads to a considerable improvement in the sensitivity limits.

Keywords

Anomalous Coupling Spin Base Backscatter Photon Spin Quantization Axis Anomalous Parameter 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    R.D. Peccei, X. Zhang, Nucl. Phys. B 337, 269 (1990)CrossRefADSGoogle Scholar
  2. 2.
    R.D. Peccei, S. Peris, X. Zhang, Nucl. Phys. B 349, 305 (1991)CrossRefADSGoogle Scholar
  3. 3.
    I. Bigi, Y. Dokshitzer, V. Khoze, J. Kuhn, P. Zerwas, Phys. Lett. B 181, 157 (1986)CrossRefADSGoogle Scholar
  4. 4.
    W. Buchmuller, D. Wyler, Nucl. Phys. B 268, 621 (1986)CrossRefADSGoogle Scholar
  5. 5.
    K. Hagiwara, S. Ishihara, R. Szalapski, D. Zeppenfeld, Phys. Rev. D 48, 2182 (1993)CrossRefADSGoogle Scholar
  6. 6.
    G.J. Gounaris, F.M. Renard, C. Verzegnassi, Phys. Rev. D 52, 451 (1995)CrossRefADSGoogle Scholar
  7. 7.
    G.J. Gounaris, F.M. Renard, N.D. Vlachos, Nucl. Phys. B 459, 51 (1996)CrossRefADSGoogle Scholar
  8. 8.
    K. Whisnant, J. Yang, B. Young, X. Zhang, Phys. Rev. D 56, 467 (1997)CrossRefADSGoogle Scholar
  9. 9.
    J.M. Yang, B. Young, Phys. Rev. D 56, 5907 (1997)CrossRefADSGoogle Scholar
  10. 10.
    G. Kane, G. Ladinsky, C.-P. Yuan, Phys. Rev. D 45, 124 (1992)CrossRefADSGoogle Scholar
  11. 11.
    CLEO Collaboration, M.S. Alam et al., Phys. Rev. Lett. 74, 2885 (1995)CrossRefADSGoogle Scholar
  12. 12.
    F. Larios, M.A. Perez, C.-P. Yuan, Phys. Lett. B 457, 334 (1999)CrossRefADSGoogle Scholar
  13. 13.
    D.E. Groom et al., Eur. Phys. J. C 15, 1 (2000)Google Scholar
  14. 14.
    S. Ambrosanio, B. Mele, Z. Phys. C 63, 63 (1994)CrossRefADSGoogle Scholar
  15. 15.
    N.V. Dokholian, G.V. Jikia, Phys. Lett. B 336, 251 (1994)CrossRefADSGoogle Scholar
  16. 16.
    K. Hagiwara, M. Tanaka, T. Stelzer, Phys. Lett. B 325, 521 (1994)CrossRefADSGoogle Scholar
  17. 17.
    E. Boos et al., Phys. Lett. B 326, 190 (1994)CrossRefADSGoogle Scholar
  18. 18.
    E. Boos et al., Z. Phys. C 70, 255 (1996)CrossRefGoogle Scholar
  19. 19.
    A. Bienarchik, K. Cieckiewicz, K. Kolodziej, hep-ph/012253Google Scholar
  20. 20.
    B. Grzadkowski, Z. Hioki, Phys. Rev. D 61, 014013 (1999)CrossRefADSGoogle Scholar
  21. 21.
    B. Grzadkowski, Z. Hioki, Nucl. Phys. B 585, 3 (2000)CrossRefADSGoogle Scholar
  22. 22.
    B. Grzadkowski, Z. Hioki, K. Ohkuma, J. Wudka, Phys. Lett. B 593, 189 (2004)CrossRefADSGoogle Scholar
  23. 23.
    P. Batra, T.M.P. Tait, Phys. Rev. D 74, 054021 (2006)CrossRefADSGoogle Scholar
  24. 24.
    D. Dicus, S. Willenbrock, Phys. Rev. D 34, 155 (1986)CrossRefADSGoogle Scholar
  25. 25.
    C.-P. Yuan, Phys. Rev. D 41, 42 (1990)CrossRefADSGoogle Scholar
  26. 26.
    S. Cortese, R. Petronzio, Phys. Lett. B 253, 494 (1991)CrossRefADSGoogle Scholar
  27. 27.
    G.V. Jikia, S.R. Slabospitsky, Phys. Lett. B 295, 136 (1992)CrossRefADSGoogle Scholar
  28. 28.
    R.K. Ellis, S. Parke, Phys. Rev. D 46, 3785 (1992)CrossRefADSGoogle Scholar
  29. 29.
    G. Bordes, B. van Eijk, Z. Phys. C 57, 81 (1993)CrossRefADSGoogle Scholar
  30. 30.
    D.O. Carlson, C.-P. Yuan, Phys. Lett. B 306, 386 (1993)CrossRefADSGoogle Scholar
  31. 31.
    D.O. Carlson, E. Malkawi, C.-P. Yuan, Phys. Lett. B 337, 145 (1994)CrossRefADSGoogle Scholar
  32. 32.
    G. Bordes, B. van Eijk, Nucl. Phys. B 435, 23 (1995)CrossRefADSGoogle Scholar
  33. 33.
    T. Stelzer, S. Willenbrock, Phys. Lett. B 357, 125 (1995)CrossRefADSGoogle Scholar
  34. 34.
    R. Pittau, Phys. Lett. B 386, 397 (1996)CrossRefADSGoogle Scholar
  35. 35.
    M.C. Smith, S. Willenbrock, Phys. Rev. D 54, 6696 (1996)CrossRefADSGoogle Scholar
  36. 36.
    D. Atwood, S. Bar-Shalom, G. Eilam, A. Soni, Phys. Rev. D 54, 5412 (1996)CrossRefADSGoogle Scholar
  37. 37.
    C.S. Li, R.J. Oakes, J.M. Yang, Phys. Rev. D 55, 5780 (1997)CrossRefADSGoogle Scholar
  38. 38.
    G. Mahlon, S. Parke, Phys. Rev. D 55, 7249 (1997)CrossRefADSGoogle Scholar
  39. 39.
    A.P. Heinson, A.S. Belyaev, E.E. Boos, Phys. Rev. D 56, 3114 (1997)CrossRefADSGoogle Scholar
  40. 40.
    T. Stelzer, Z. Sullivan, S. Willenbrock, Phys. Rev. D 56, 5919 (1997)CrossRefADSGoogle Scholar
  41. 41.
    D. Atwood, S. Bar-Shalom, G. Eilam, A. Soni, Phys. Rev. D 57, 2957 (1998)CrossRefADSGoogle Scholar
  42. 42.
    T. Stelzer, Z. Sullivan, S. Willenbrock, Phys. Rev. D 58, 094021 (1998)CrossRefADSGoogle Scholar
  43. 43.
    A.S. Belyaev, E.E. Boos, L.V. Dudko, Phys. Rev. D 59, 075001 (1999)CrossRefADSGoogle Scholar
  44. 44.
    T.M.P. Tait, C.-P. Yuan, Phys. Rev. D 63, 014018 (2000)CrossRefADSGoogle Scholar
  45. 45.
    J.A. Aguilar-Saavedra et al., Eur. Phys. J. C 50, 519 (2007)CrossRefADSGoogle Scholar
  46. 46.
    E. Boos, L. Dudko, T. Ohl, Eur. Phys. J. C 11, 473 (1999)ADSGoogle Scholar
  47. 47.
    S. Atağ, B. Şahin, Phys. Rev. D 73, 074001 (2006)CrossRefADSGoogle Scholar
  48. 48.
    E. Boos, A. Pukhov, M. Sachwitz, H.J. Schreiber, Phys. Lett. B 404, 119 (1997)CrossRefADSGoogle Scholar
  49. 49.
    J.-J. Cao et al., Phys. Rev. D 58, 094004 (1998)CrossRefADSGoogle Scholar
  50. 50.
    Q.-H. Cao, J. Wudka, Phys. Rev. D 74, 094015 (2006)CrossRefADSGoogle Scholar
  51. 51.
    C. Akerlof, Ann Arbor Report No. UM HE 81-59 (1981)Google Scholar
  52. 52.
    J.A. Aguilar-Saavedra et al., TESLA Technical Design Report, DESY-2001-011Google Scholar
  53. 53.
    T.L. Barklow, in: Proceedings of the 1990 Summer Study on Research Directions for the Decade (Snowmass, Colorado, 1990), and SLAC Report No. SLAC-PUB-5364 (1990)Google Scholar
  54. 54.
    I.F. Ginzburg et al., Nucl. Instrum. Methods 205, 47 (1983)CrossRefGoogle Scholar
  55. 55.
    I.F. Ginzburg et al., Nucl. Instrum. Methods 219, 5 (1984)CrossRefGoogle Scholar
  56. 56.
    B. Şahin, I. Şahin, hep-ph/0708.3905Google Scholar
  57. 57.
    T. Kaneko in: New Computing Techniques in Physics Research, ed. by D. Perret-Gallix, W. Wojcik, Edition du CNRS, 1990Google Scholar
  58. 58.
    MINAMI-TATEYA group, GRACE manual, KEK Report 92-19, 1993Google Scholar
  59. 59.
    F. Yuasa et al., Prog. Theor. Phys. Suppl. 138, 18 (2000)CrossRefADSGoogle Scholar

Copyright information

© Springer-Verlag / Società Italiana di Fisica 2008

Authors and Affiliations

  1. 1.Department of Physics, Faculty of SciencesAnkara UniversityAnkaraTurkey

Personalised recommendations