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Bound on minimal universal extra dimensions from B¯→Xsγ

Ulrich Haisch1 and Andreas Weiler2

  • 1Institut für Theoretische Physik, Universität Zürich, CH-8057 Zürich, Switzerland
  • 2Institute for High-Energy Phenomenology Newman Laboratory for Elementary-Particle Physics, Cornell University Ithaca, New York 14853, USA

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Phys. Rev. D 76, 034014 – Published 23 August, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.034014

Abstract

We reexamine the constraints on universal extra dimensional models arising from the inclusive radiative B¯→Xsγ decay. We take into account the leading order contributions due to the exchange of Kaluza-Klein modes as well as the available next-to-next-to-leading order corrections to the B¯→Xsγ branching ratio in the standard model. For the case of one large flat universal extra dimension, we obtain a lower bound on the inverse compactification radius 1/R>600  GeV at 95% confidence level that is independent of the Higgs mass.

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References (30)

  1. S. Chen et al. (CLEO Collaboration), Phys. Rev. Lett. 87, 251807 (2001).
  2. P. Koppenburg et al. (Belle Collaboration), Phys. Rev. Lett. 93, 061803 (2004).
  3. B. Aubert et al. (BABAR Collaboration), Phys. Rev. Lett. 97, 171803 (2006).
  4. E. Barbiero et al. (Heavy Flavor Averaging Group), arXiv:hep-ex/0603003.
  5. K. Bieri, C. Greub, and M. Steinhauser, Phys. Rev. D 67, 114019 (2003); M. Misiak and M. Steinhauser, Nucl. Phys. B683, 277 (2004); M. Gorbahn and U. Haisch, B713, 291 (2005); M. Gorbahn, U. Haisch, and M. Misiak, Phys. Rev. Lett. 95, 102004 (2005); K. Melnikov and A. Mitov, Phys. Lett. B 620, 69 (2005); I. Blokland et al., Phys. Rev. D 72, 033014 (2005); H. M. Asatrian et al., Nucl. Phys. B749, 325 (2006); B762, 212 (2007).
  6. M. Misiak and M. Steinhauser, Nucl. Phys. B764, 62 (2007).
  7. M. Czakon, U. Haisch, and M. Misiak, J. High Energy Phys. 03 (2007) 008.
  8. M. Misiak et al., Phys. Rev. Lett. 98, 022002 (2007).
  9. T. Becher and M. Neubert, Phys. Rev. Lett. 98, 022003 (2007).
  10. T. Becher and M. Neubert, Phys. Lett. B 633, 739 (2006); 637, 251 (2006).
  11. S. J. Lee, M. Neubert, and G. Paz, Phys. Rev. D 75, 114005 (2007).
  12. The small NNLO corrections related to the four-loop b→sg mixing diagrams [7] and from the charm quark mass effects of the electromagnetic dipole operator contribution [29] is not included in the numerical result.
  13. T. Appelquist, H. C. Cheng, and B. A. Dobrescu, Phys. Rev. D 64, 035002 (2001).
  14. K. Agashe, N. G. Deshpande, and G. H. Wu, Phys. Lett. B 514, 309 (2001).
  15. A. J. Buras et al., Nucl. Phys. B678, 455 (2004).
  16. G. Servant and T. M. P. Tait, Nucl. Phys. B650, 391 (2003); H. C. Cheng, J. L. Feng, and K. T. Matchev, Phys. Rev. Lett. 89, 211301 (2002).
  17. D. Hooper and S. Profumo, arXiv:hep-ph/0701197.
  18. A. J. Buras et al., Phys. Lett. B 500, 161 (2001); G. D’Ambrosio et al., Nucl. Phys. B645, 155 (2002); M. Blanke et al., J. High Energy Phys. 10 (2006) 003.
  19. Boundary terms arise radiatively [30]. They affect the b→sγ amplitude first at the two-loop level. Since we perform a LO analysis of B(B¯→Xsγ) in the mUED model it is consistent to neglect these effects.
  20. I. Gogoladze and C. Macesanu, Phys. Rev. D 74, 093012 (2006).
  21. C. Macesanu, C. D. McMullen, and S. Nandi, Phys. Rev. D 66, 015009 (2002); Phys. Lett. B 546, 253 (2002).
  22. J. F. Oliver, J. Papavassiliou, and A. Santamaria, Phys. Rev. D 67, 056002 (2003).
  23. T. Appelquist and B. A. Dobrescu, Phys. Lett. B 516, 85 (2001).
  24. A. J. Buras, M. Spranger, and A. Weiler, Nucl. Phys. B660, 225 (2003).
  25. P. Colangelo et al., Phys. Rev. D 73, 115006 (2006); 74, 115006 (2006).
  26. P. Gambino and U. Haisch, J. High Energy Phys. 09 (2000) 001; 10 (2001) 020.
  27. J. R. Andersen and E. Gardi, J. High Energy Phys. 01 (2007) 029.
  28. I. Antoniadis, Phys. Lett. B 246, 377 (1990).
  29. H. M. Asatrian et al., Phys. Lett. B 647, 173 (2007).
  30. H. Georgi, A. K. Grant, and G. Hailu, Phys. Lett. B 506, 207 (2001); H. C. Cheng, K. T. Matchev, and M. Schmaltz, Phys. Rev. D 66, 036005 (2002).

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Phys. Rev. D 76, 034014– Published 23 August, 2007
  • Received 15 March 2007

© 2007 American Physical Society

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