Export citation

Export citation

Choose format for download:

Download Citation
  • Access by Xinjiang University

Natural h4g in supersymmetric models and R-hadrons at the LHC

Markus A. Luty* and Daniel J. Phalen

Aaron Pierce

  • Physics Department, University of California Davis, Davis, California 95616, USA

  • Michigan Center for Theoretical Physics, Department of Physics, University of Michigan, Ann Arbor, Michigan 48109, USA

  • * luty@physics.ucdavis.edu
  • phalen@physics.ucdavis.edu
  • atpierce@umich.edu

Phys. Rev. D 83, 075015 – Published 22 April, 2011

DOI: https://doi.org/10.1103/PhysRevD.83.075015

Abstract

We construct a simple and natural supersymmetric model where the dominant Higgs decay is haa followed by agg. In this case mh<mZ is compatible with all experimental searches, completely eliminating the fine-tuning otherwise required to satisfy Higgs search limits. The model extends the minimal supersymmetric standard model with singlet Higgs fields as well as vectorlike colored particles that mediate the decay agg. The a is a pseudo-Nambu-Goldstone boson of a new global U(1) symmetry, and can naturally have any mass from a few GeV to mh/2. All interactions can be perturbative up to the GUT scale, and gauge coupling unification is preserved if the colored mediators come in complete GUT representations. In this case aγγ has a 1% branching ratio, so hggγγ may be observable. The colored particles that mediate the agg decay must be below the TeV scale, and can therefore be produced at the LHC. If these particles are stable on collider time scales, they will appear as R-hadrons, a signal visible in early LHC running. A smoking-gun signal that the stable colored particles are mediators of h4j is R-hadron production in association with an a. We show that this signal with aγγ is observable at the LHC with as little as 10fb1 of integrated luminosity. Observation of R-hadrons plus missing energy would show that the superpartner of the R-hadron is R-parity odd, and therefore not an ordinary quark or gluon.

Article Text

References (52)

  1. S. Dimopoulos, S. Raby, and F. Wilczek, Phys. Rev. D 24, 1681 (1981).
  2. H. E. Haber and M. Sher, Phys. Rev. D 35, 2206 (1987).
  3. R. Harnik, G. D. Kribs, D. T. Larson, and H. Murayama, Phys. Rev. D 70, 015002 (2004).
  4. A. Delgado and T. M. Tait, J. High Energy Phys. 07 (2005) 023.
  5. S. Chang, C. Kilic, and R. Mahbubani, Phys. Rev. D 71, 015003 (2005).
  6. M. Dine, N. Seiberg, and S. Thomas, Phys. Rev. D 76, 095004 (2007).
  7. M. Drees, Phys. Rev. D 35, 2910 (1987).
  8. K. Babu, X.-G. He, and E. Ma, Phys. Rev. D 36, 878 (1987).
  9. P. Batra, A. Delgado, D. E. Kaplan, and T. M. P. Tait, J. High Energy Phys. 02 (2004) 043.
  10. R. Barbieri, L. J. Hall, Y. Nomura, and V. S. Rychkov, Phys. Rev. D 75, 035007 (2007).
  11. P. Lodone, J. High Energy Phys. 05 (2010) 068.
  12. A. Birkedal, Z. Chacko, and Y. Nomura, Phys. Rev. D 71, 015006 (2005).
  13. A. Maloney, A. Pierce, and J. G. Wacker, J. High Energy Phys. 06 (2006) 034.
  14. R. Dermisek and J. F. Gunion, Phys. Rev. Lett. 95, 041801 (2005).
  15. R. Dermisek and J. F. Gunion, Phys. Rev. D 73, 111701 (2006).
  16. S. Chang, P. J. Fox, and N. Weiner, J. High Energy Phys. 08 (2006) 068.
  17. L. M. Carpenter, D. E. Kaplan, and E.-J. Rhee, Phys. Rev. Lett. 99, 211801 (2007).
  18. B. Bellazzini, C. Csaki, A. Falkowski, and A. Weiler, Phys. Rev. D 80, 075008 (2009).
  19. B. Bellazzini, C. Csaki, A. Falkowski, and A. Weiler, Phys. Rev. D 81, 075017 (2010).
  20. R. Kitano and Y. Nomura, Phys. Lett. B 631, 58 (2005).
  21. G. F. Giudice and R. Rattazzi, Nucl. Phys. B757, 19 (2006).
  22. R. Barbieri, L. J. Hall, A. Y. Papaioannou, D. Pappadopulo, and V. S. Rychkov, J. High Energy Phys. 03 (2008) 005.
  23. S. Chang, R. Dermisek, J. F. Gunion, and N. Weiner, Annu. Rev. Nucl. Part. Sci. 58, 75 (2008).
  24. B. A. Dobrescu, G. L. Landsberg, and K. T. Matchev, Phys. Rev. D 63, 075003 (2001).
  25. G. Abbiendi et al. (OPAL Collaboration), Eur. Phys. J. C 27, 483 (2003).
  26. G. Abbiendi et al. (OPAL Collaboration), Eur. Phys. J. C 27, 311 (2003).
  27. S. Schael et al. (ALEPH Collaboration, DELPHI Collaboration, L3 Collaboration, OPAL Collaborations, LEP Working Group for Higgs Boson Searches), Eur. Phys. J. C 47, 547 (2006).
  28. M. Fairbairn, A. Kraan, D. Milstead, T. Sjostrand, P. Z. Skands et al., Phys. Rep. 438, 1 (2007).
  29. S. A. Abel, Nucl. Phys. B480, 55 (1996).
  30. B. A. Dobrescu and K. T. Matchev, J. High Energy Phys. 09 (2000) 031.
  31. S. Chang, P. J. Fox, and N. Weiner, Phys. Rev. Lett. 98, 111802 (2007).
  32. A. Martin, arXiv:hep-ph/0703247.
  33. A. Falkowski, D. Krohn, J. Shelton, A. Thalapillil, and L.-T. Wang, arXiv:1006.1650.
  34. C.-R. Chen, M. M. Nojiri, and W. Sreethawong, J. High Energy Phys. 11 (2010) 012.
  35. G. D. Kribs, A. Martin, and T. S. Roy, arXiv:1012.2866.
  36. G. D. Kribs, T. Plehn, M. Spannowsky, and T. M. Tait, Phys. Rev. D 76, 075016 (2007).
  37. J. Aguilar-Saavedra, Phys. Lett. B 625, 234 (2005).
  38. A. Atre et al., arXiv:1102.1987.
  39. S. Raby, Phys. Rev. D 56, 2852 (1997).
  40. H. Baer, K.-m. Cheung, and J. F. Gunion, Phys. Rev. D 59, 075002 (1999).
  41. A. Mafi and S. Raby, Phys. Rev. D 63, 055010 (2001).
  42. S. Raby, Phys. Lett. B 422, 158 (1998).
  43. A. Mafi and S. Raby, Phys. Rev. D 62, 035003 (2000).
  44. N. Arkani-Hamed and S. Dimopoulos, J. High Energy Phys. 06 (2005) 073.
  45. CMS Collaboration, Report No. CMS PAS EXO-10-004.
  46. A. Arvanitaki, S. Dimopoulos, A. Pierce, S. Rajendran, and J. G. Wacker, Phys. Rev. D 76, 055007 (2007).
  47. V. Abazov et al. (D0 Collaboration), Phys. Rev. Lett. 99, 131801 (2007).
  48. CMS Collaboration, Phys. Rev. Lett. 106, 011801 (2011).
  49. G. F. Farrar, R. Mackeprang, D. Milstead, and J. P. Roberts, J. High Energy Phys. 02 (2011) 018.
  50. J. Alwall, P. Demin, S. de Visscher, R. Frederix, M. Herquet et al., J. High Energy Phys. 09 (2007) 028.
  51. S. D. Thomas and J. D. Wells, Phys. Rev. Lett. 81, 34 (1998).
  52. M. R. Buckley, L. Randall, and B. Shuve, arXiv:0909.4549.

Outline

Information

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation