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Annual Review of Nuclear and Particle Science

Volume 65, 2015

Naturalness Under Stress

Abstract

Naturalness has for many years been a guiding principle in the search for physics beyond the Standard Model, particularly for understanding the physics of electroweak symmetry breaking. However, the discovery of the Higgs particle at 125 GeV, accompanied by the exclusion of many types of new physics expected in natural models, has called the principle into question. In addition, apart from the scale of weak interactions, there are other quantities in nature that appear unnaturally small and for which we have no proposal for a natural explanation. I first review the principle, then discuss some of the conjectures it has spawned. I then turn to some of the challenges to the naturalness idea and consider alternatives.

Keyword(s): beyond the Standard Model, fine-tuning, naturalness, supersymmetry, technicolor
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2015-10-19
2025-06-20
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Literature Cited

  1. Planck M. 1.  Sitz. K. Preuß. Akad. Wiss. Berlin 18: 5:440 1899. [Google Scholar]
  2. Lorentz HA. 2.  Arch. Néerl. Sci. Exactes Nat. 25:363 1892. [Google Scholar]
  3. Weisskopf VF. 3.  Z. Phys. 89:27 1934. [Google Scholar]
  4. Weisskopf VF. 4.  Z. Phys. 90:53 1934. [Google Scholar]
  5. ’t Hooft G. 5.  NATO Sci. Ser. B 59:135 1980. [Google Scholar]
  6. Wilson KG. 6.  Phys. Rev. D 3:1818 1971. [Google Scholar]
  7. Witten E. 7.  Phys. Lett. B 86:283 1979. [Google Scholar]
  8. Crewther RJ, Di Vecchia P, Veneziano G, Witten E. 8.  Phys. Lett. B 88:123 1979. [Google Scholar]
  9. Weinberg S. 9.  Phys. Rev. D 13:974 1976. [Google Scholar]
  10. Susskind L. 10.  Phys. Rev. D 20:2619 1979. [Google Scholar]
  11. Peskin ME, Takeuchi T. 11.  Phys. Rev. Lett. 65:964 1990. [Google Scholar]
  12. Kaplan DB, Georgi H, Dimopoulos S. 12.  Phys. Lett. B 136:187 1984. [Google Scholar]
  13. Georgi H, Kaplan DB. 13.  Phys. Lett. B 145:216 1984. [Google Scholar]
  14. Arkani-Hamed N, Cohen AG, Georgi H. 14.  Phys. Lett. B 513:232 2001. [Google Scholar]
  15. Arkani-Hamed N, Dimopoulos S, Dvali GR. 15.  Phys. Lett. B 429:263 1998. [Google Scholar]
  16. Antoniadis I, Arkani-Hamed N, Dimopoulos S, Dvali GR. 16.  Phys. Lett. B 436:257 1998. [Google Scholar]
  17. Arkani-Hamed N, Dimopoulos S, Dvali GR. 17.  Phys. Rev. D 59:086004 1999. [Google Scholar]
  18. Hoyle CD. 18.  et al. Phys. Rev. D 70:042004 2004. [Google Scholar]
  19. Adelberger EG. 19.  et al. Phys. Rev. Lett. 98:131104 2007. [Google Scholar]
  20. Randall L, Sundrum R. 20.  Phys. Rev. Lett. 83:3370 1999. [Google Scholar]
  21. Randall L, Sundrum R. 21.  Phys. Rev. Lett. 83:4690 1999. [Google Scholar]
  22. Witten E. 22.  Nucl. Phys. B 188:513 1981. [Google Scholar]
  23. Grisaru MT, Siegel W, Rocek M. 23.  Nucl. Phys. B 159:429 1979. [Google Scholar]
  24. Freedman DZ, Van Proeyen A. 24.  Supergravity Cambridge, UK: Cambridge Univ. Press 2012. [Google Scholar]
  25. Dine M. 25.  Supersymmetry and String Theory: Beyond the Standard Model Cambridge, UK: Cambridge Univ. Press 2007. [Google Scholar]
  26. Girardello L, Grisaru MT. 26.  Nucl. Phys. B 194:65 1982. [Google Scholar]
  27. Dimopoulos S, Georgi H. 27.  Nucl. Phys. B 193:150 1981. [Google Scholar]
  28. Nir Y, Seiberg N. 28.  Phys. Lett. B 309:337 1993. [Google Scholar]
  29. Giudice GF, Rattazzi R. 29.  Phys. Rep. 322:419 1999. [Google Scholar]
  30. Leurer M, Nir Y, Seiberg N. 30.  Nucl. Phys. B 398:319 1993. [Google Scholar]
  31. Haber HE, Hempfling R. 31.  Phys. Rev. Lett. 66:1815 1991. [Google Scholar]
  32. Draper P, Lee G, Wagner CEM. 32.  Phys. Rev. D 89:055023 2014. [Google Scholar]
  33. Hall LJ, Pinner D, Ruderman JT. 33.  J. High Energy Phys. 1204:131 2012. [Google Scholar]
  34. Rohm R. 34.  Nucl. Phys. B 237:553 1984. [Google Scholar]
  35. Weinberg S. 35.  Phys. Rev. Lett. 59:2607 1987. [Google Scholar]
  36. Banks T. 36.  Nucl. Phys. B 249:332 1985. [Google Scholar]
  37. Linde AD. 37.  Phys. Lett. B 175:395 1986. [Google Scholar]
  38. Weinberg S. 38.  Phys. Rev. D 61:103505 2000. [Google Scholar]
  39. Banks T, Dine M, Seiberg N. 39.  Phys. Lett. B 273:105 1991. [Google Scholar]
  40. Bousso R, Polchinski J. 40.  J. High Energy Phys. 0006:006 2000. [Google Scholar]
  41. Kachru S, Kallosh R, Linde AD, Trivedi SP. 41.  Phys. Rev. D 68:046005 2003. [Google Scholar]
  42. Hall LJ, Pinner D, Ruderman JT. 42.  arXiv1409.0551 [hep-ph] 2014.
  43. Ade PAR. 43.  et al. (Planck Collab.) arXiv1303.5082 [astro-ph] 2013.
  44. Banks T, Dine M, Gorbatov E. 44.  J. High Energy Phys. 0408:058 2004. [Google Scholar]
  45. Ubaldi L. 45.  Phys. Rev. D 81:025011 2010. [Google Scholar]
  46. Georgi H, McArthur IN. 46.  Instantons and the up quark mass HUTP-81/A011. Unpubl. ms 1981. [Google Scholar]
  47. Kaplan DB, Manohar AV. 47.  Phys. Rev. Lett. 56:2004 1986. [Google Scholar]
  48. Banks T, Nir Y, Seiberg N. 48.  arXivhep–ph/9403203 1994.
  49. Brambilla N. 49.  et al. arXiv1404.3723 [hep-ph] 2014.
  50. Aoki S. 50.  et al. arXiv1310.8555 [hep-lat] 2013.
  51. Durr S. 51.  et al. Phys. Lett. B 701:265 2011. [Google Scholar]
  52. Witten E. 52.  Phys. Lett. B 149:351 1984. [Google Scholar]
  53. Bobkov K, Braun V, Kumar P, Raby S. 53.  J. High Energy Phys. 1012:056 2010. [Google Scholar]
  54. Dine M, Festuccia G, Kehayias J, Wu W. 54.  J. High Energy Phys 1101:012 2011. [Google Scholar]
  55. Carpenter LM, Dine M, Festuccia G, Ubaldi L. 55.  Phys. Rev. D 80:125023 2009. [Google Scholar]
  56. Nelson AE. 56.  Phys. Lett. B 136:387 1984. [Google Scholar]
  57. Barr SM. 57.  Phys. Rev. Lett. 53:329 1984. [Google Scholar]
  58. Denef F, Douglas MR. 58.  J. High Energy Phys. 0405:072 2004. [Google Scholar]
  59. Marsh D, McAllister L, Wrase T. 59.  J. High Energy Phys. 1203:102 2012. [Google Scholar]
  60. Dine M, Festuccia G, Morisse A. 60.  J. High Energy Phys. 0909:013 2009. [Google Scholar]
  61. Greene B. 61.  et al. Phys. Rev. D 88:026005 2013. [Google Scholar]
  62. Denef F, Douglas MR. 62.  J. High Energy Phys. 0503:061 2005. [Google Scholar]
  63. Dine M, O'Neil D, Sun Z. 63.  J. High Energy Phys. 0507:014 2005. [Google Scholar]
  64. Banks T, Dixon LJ. 64.  Nucl. Phys. B 307:93 1988. [Google Scholar]
  65. Dine M, Sun Z. 65.  J. High Energy Phys. 0601:129 2006. [Google Scholar]
  66. Dine M, Festuccia G, Morisse A. 66.  J. High Energy Phys. 0912:013 2009. [Google Scholar]
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Naturalness Under Stress
Annual Review of Nuclear and Particle Science 65, 43 (2015); https://doi.org/10.1146/annurev-nucl-102014-022053
/content/journals/10.1146/annurev-nucl-102014-022053
/content/journals/10.1146/annurev-nucl-102014-022053
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