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Prog. Theor. Phys. Vol. 125 No. 1 (2011) pp. 103-128

[ Full Text PDF : FREE ACCESS (357K) ]

Flavor Structure of the Three Site Higgsless Model

Masafumi Kurachi1 and Tetsuya Onogi2

1Department of Physics, Tohoku University, Sendai 980-8578, Japan
2Department of Physics, Osaka University, Toyonaka 560-0043, Japan

(Received June 29, 2010; Revised October 28, 2010)

Abstract:

We study the flavor structure in the three site Higgsless model. In this model, the gauge bosons and fermions have heavy partners, coming from the Kaluza-Klein excitation in the dimensional deconstruction picture. The Yukawa couplings are introduced in a way to minimize the flavor-changing neutral current (FCNC) in the light sector at the tree level. Owing to the flavor mixing between the light and heavy partner fields, new effects on FCNCs appear at the one-loop level. As an example of such FCNC processes, we calculate the contribution to the b →s γ amplitude in the three site Higgsless model. Interestingly, heavy particles that exist in the three site Higgsless model do not completely decouple in the heavy-mass limit. The one-loop level b →s γ amplitude is calculated by considering all possible combinations of particles in the loop; then, it is compared with the experiment. The result shows that the central value of the B →Xs γ branching ratio in the three site Higgsless model is closer to its experimental central value as one takes the larger value of a free parameter, εtR, within a range allowed by the precision electroweak measurement.

Subject Index : 140, 143, 144, 151, 160
URL : http://ptp.ipap.jp/link?PTP/125/103/
DOI : 10.1143/PTP.125.103

[ Full Text PDF : FREE ACCESS (357K) ] Citation:

References:

  1. R. S. Chivukula, B. Coleppa, S. Di Chiara, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 74 (2006), 075011, [APS] hep-ph/0607124[e-print arXiv].
  2. C. Csaki, C. Grojean, H. Murayama, L. Pilo and J. Terning, Phys. Rev. D 69 (2004), 055006, [APS] hep-ph/0305237[e-print arXiv].
  3. C. Csaki, C. Grojean, L. Pilo and J. Terning, Phys. Rev. Lett. 92 (2004), 101802, [APS] hep-ph/0308038[e-print arXiv].
  4. R. S. Chivukula, D. A. Dicus and H. J. He, Phys. Lett. B 525 (2002), 175, [CrossRef] hep-ph/0111016[e-print arXiv].
  5. R. S. Chivukula and H. J. He, Phys. Lett. B 532 (2002), 121, [CrossRef] hep-ph/0201164[e-print arXiv].
  6. R. S. Chivukula, D. A. Dicus, H. J. He and S. Nandi, Phys. Lett. B 562 (2003), 109, [CrossRef] hep-ph/0302263[e-print arXiv].
  7. M. E. Peskin and T. Takeuchi, Phys. Rev. D 46 (1992), 381[APS]; Phys. Rev. Lett. 65 (1990), 964[APS].
  8. R. S. Chivukula, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 70 (2004), 075008, [APS] hep-ph/0406077[e-print arXiv]; Phys. Lett. B 603 (2004), 210, hep-ph/0408262[e-print arXiv]; Phys. Rev. D 71 (2005), 035007, [APS] hep-ph/0410154[e-print arXiv].
  9. R. S. Chivukula, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 71 (2005), 115001, [APS] hep-ph/0502162[e-print arXiv]; Phys. Rev. D 72 (2005), 015008, [APS] hep-ph/0504114[e-print arXiv].
    See also R. S. Chivukula, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 72 (2005), 095013, [APS] hep-ph/0509110[e-print arXiv], for ideal fermion delocalization in five-dimensional gauge theories.
  10. R. S. Chivukula, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 72 (2005), 075012, [APS] hep-ph/0508147[e-print arXiv].
  11. R. Foadi, S. Gopalakrishna and C. Schmidt, J. High Energy Phys. 03 (2004), 042, [CrossRef] hep-ph/0312324[e-print arXiv].
    J. Hirn and J. Stern, Eur. Phys. J. C 34 (2004), 447, hep-ph/0401032[e-print arXiv].
    R. Casalbuoni, S. De Curtis and D. Dominici, Phys. Rev. D 70 (2004), 055010, [APS] hep-ph/0405188[e-print arXiv].
    M. Perelstein, J. High Energy Phys. 10 (2004), 010, [CrossRef] hep-ph/0408072[e-print arXiv].
    H. Georgi, Phys. Rev. D 71 (2005), 015016, [APS] hep-ph/0408067[e-print arXiv].
    H. J. He, Int. J. Mod. Phys. A 20 (2005), 3362, hep-ph/0412113[e-print arXiv].
  12. R. S. Chivukula, E. H. Simmons, H. J. He, M. Kurachi and M. Tanabashi, Phys. Rev. D 75 (2007), 035005, [APS] hep-ph/0612070[e-print arXiv]; Phys. Rev. D 78 (2008), 095003, [APS] arXiv:0808.1682[e-print arXiv].
  13. N. Arkani-Hamed, A. G. Cohen and H. Georgi, Phys. Rev. Lett. 86 (2001), 4757, [APS] hep-th/0104005[e-print arXiv].
  14. C. T. Hill, S. Pokorski and J. Wang, Phys. Rev. D 64 (2001), 105005, [APS] hep-th/0104035[e-print arXiv].
  15. H. J. He et al., Phys. Rev. D 78 (2008), 031701, [APS] arXiv:0708.2588[e-print arXiv].
  16. H. Georgi, Nucl. Phys. B 266 (1986), 274[CrossRef].
  17. R. Casalbuoni, S. De Curtis, D. Dominici and R. Gatto, Phys. Lett. B 155 (1985), 95.
  18. R. Casalbuoni, A. Deandrea, S. De Curtis, D. Dominici, R. Gatto and M. Grazzini, Phys. Rev. D 53 (1996), 5201, [APS] hep-ph/9510431[e-print arXiv].
  19. M. Bando, T. Kugo, S. Uehara, K. Yamawaki and T. Yanagida, Phys. Rev. Lett. 54 (1985), 1215[APS].
  20. M. Bando, T. Kugo and K. Yamawaki, Nucl. Phys. B 259 (1985), 493[CrossRef].
  21. M. Bando, T. Fujiwara and K. Yamawaki, Prog. Theor. Phys. 79 (1988), 1140[PTP].
  22. M. Bando, T. Kugo and K. Yamawaki, Phys. Rep. 164 (1988), 217[CrossRef].
  23. See also the following for a comprehensive review:
    M. Harada and K. Yamawaki, Phys. Rep. 381 (2003), 1, [CrossRef] hep-ph/0302103[e-print arXiv].
  24. A. S. Belyaev, R. S. Chivukula, N. D. Christensen, H. J. He, M. Kurachi, E. H. Simmons and M. Tanabashi, Phys. Rev. D 80 (2009), 055022, [APS] arXiv:0907.2662[e-print arXiv].
  25. T. Abe, S. Matsuzaki and M. Tanabashi, Phys. Rev. D 78 (2008), 055020, [APS] arXiv:0807.2298[e-print arXiv].
  26. T. Abe, R. S. Chivukula, E. H. Simmons and M. Tanabashi, to be published.
  27. F. Larios, M. A. Perez and C. P. Yuan, Phys. Lett. B 457 (1999), 334, hep-ph/9903394[e-print arXiv].
  28. K. Chetyrkin, M. Misiak and M. Munz, Phys. Lett. B 400 (1997), 206 [Errata; 425 (1998), 414], hep-ph/9612313[e-print arXiv].
  29. T. Inami and C. S. Lim, Prog. Theor. Phys. 65 (1981), 297 [PTP][Errata; 65 (1981), 1772[PTP]].
  30. M. Misiak et al., Phys. Rev. Lett. 98 (2007), 022002, [APS] hep-ph/0609232[e-print arXiv].
  31. E. Barberio et al. (Heavy Flavor Averaging Group), arXiv:0808.1297[e-print arXiv],
    and on-line update at
    http://www.slac.stanford.edu/xorg/hfag/rare/winter10/radll/btosg.pdf
  32. M. Artuso, E. Barberio and S. Stone, PMC Phys. A 3 (2009), 3, arXiv:0902.3743[e-print arXiv].
  33. L. Randall and R. Sundrum, Phys. Lett. B 312 (1993), 148, hep-ph/9305289[e-print arXiv].
  34. K. Sfetsos, Nucl. Phys. B 612 (2001), 191, hep-th/0106126[e-print arXiv].
  35. V. M. Abazov et al. (The D0 Collaboration), arXiv:1005.2757[e-print arXiv].

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