Family unification, exotic states and light magnetic monopoles

Journal of High Energy Physics

Volumn 2007, Issue 1, 2007, Pages

  Kephart, Thomas W ^a   Lee, Chin Aik ^b   Shafi, Qaisar ^b  

^a VANDERBILT UNIVERSITY   (United States)

^b UNIVERSITY OF DELAWARE   (United States)

Author keywords

Beyond standard model; GUT; Solitons monopoles and instantons

Indexed keywords

EID: 33947675316     PISSN: 10298479     EISSN: 10298479     Source Type: Journal    
DOI: 10.1088/1126-6708/2007/01/088     Document Type: Article

References (57)

1. We could easily extend this discussion to models with more SU(N) factors.
2. S.L. Glashow, Fifth workshop on grand unification: proceedings Edited by Kyungsik Kang, Herbert Fried, Paul Frampton, (World Scientific), (1984)
3. G. Lazarides, C. Panagiotakopoulos and Q. Shafi, Supersymmetric unification without proton decay 1993 Phys. Lett. B 315 325
4. Erratum 1993 Phys. Lett. B 317 661 [hep-ph/9306332]
5. G.R. Dvali and Q. Shafi, Gauge hierarchy in SU(3)(c) × SU(3)(l) × SU(3)-r and low-energy implications, 1994 Phys. Lett. B 326 258 [hep-ph/9401337]
6. 3, 1994 Phys. Lett. B 339 241 [hep-ph/9404334].
7. J.C. Pati and A. Salam, Lepton number as the fourth color 1974 Phys. Rev. D 10 275.
8. T.W. Kephart and Q. Shafi, Family unification, exotic states and magnetic monopoles 2001 Phys. Lett. B 520 313 [hep-ph/0105237].
9. A.E. Lawrence, N. Nekrasov and C. Vafa, On conformal field theories in four dimensions 1998 Nucl. Phys. B 533 199 [hep-th/9803015].
10. S. Kachru and E. Silverstein, 4D conformal theories and strings on orbifolds 1998 Phys. Rev. Lett. 80 4855 [hep-th/9802183].
11. F. Gursey, P. Ramond and P. Sikivie, A universal gauge theory model based on E6 1976 Phys. Lett. B 60 177.
12. Y. Achiman and B. Stech, Quark lepton symmetry and mass scales in an E6 unified gauge model 1978 Phys. Lett. B 77 389
13. Q. Shafi, E(6) as a unifying gauge symmetry 1978 Phys. Lett. B 79 301
14. 0
15. 5/Γ, where Γ contains 3 and 4 dimensional irreducible representations and we choose N ≤ 1.
16. J.E. Kim and H.S. Song, Can all elementary particle forces be unified at 100 TeV to 1000 TeV? 1980 Phys. Rev. D 22 1753.
17. H. Goldberg, T.W. Kephart and M.T. Vaughn, Fractionally charged color singlet fermions in a grand unified theory 1981 Phys. Rev. Lett. 47 1429.
18. A. De Rujula, H. Georgi and S.L. Glashow, Flavor goniometry by proton decay 1980 Phys. Rev. Lett. 45 413
19. S. M. Barr, A new symmetry breaking pattern for SO(10) and proton decay, 1982 Phys. Lett. B 112 219
20. For additional references see, G.B. Cleaver, J.R. Ellis and D.V. Nanopoulos, Flat directions in flipped SU(5). I: All-order analysis, 2001 Nucl. Phys. B 600 315 [hep-ph/0009338].
21. For a recent application of flipped SU(5), B. Kyae and Q. Shafi, Flipped SU(5) predicts δ(t)/t, 2006 Phys. Lett. B 635 247 [hep-ph/0510105].
22. T.W. Kephart and T.-C. Yuan, Isoflipped SU(5) models, 1989 Phys. Lett. B 231 275
23. 2] ≤ 2 but we usually find it more convenient to drop the overall normalization factors as will be either stated or clear from context.
24. Technically speaking, we should not be using the vacuum since hypercharge is spontaneously broken in the vacuum. We should be using some thermal state in equilibrium at a temperature above the electroweak phase transition.
25. 2.
26. In the rest of this draft, we will append a subscript to each representation indicating the Lie group it is a representation of to reduce any potential ambiguities that may arise.
27. This might actually allow us to reduce the number of Higgs fields.
28. A subscript of H indicates that it is a Higgs field. The absence of such a subscript indicates that it is a fermion field.
29. HSU(3) and if we wish to pair up both the SU(2)-doublets and the SU(2)-singlets, we have to include both Higgs fields.
30. This will be abbreviated as FPSA.
31. SU(4) which is responsible for the symmetry breaking. However, the further flipping doesn't really lead to any problems, so it is not necessary to have such a principle in the first place.
32. Whether the scale happens to be above or below the QCD scale is irrelevant here since there are electrically neutral colored particles. This is unlike the minimal SM where even though the electric charge is quantized in multiples of 1/3 at distance scales smaller than the QCD scale, only integer charges are present at larger scales.
33. There are twice as many such fermions as the left-handed neutrino and the left-handed antineutrino is a linear combination of them.
34. G.K. Leontaris and J. Rizos, A Pati-Salam model from branes 2001 Phys. Lett. B 510 295 [hep-ph/0012255].
35. P.H. Frampton and T.W. Kephart, Chiral fermions and AdS/CFT duality for a nonabelian orbifold 2000 Phys. Lett. B 485 403 [hep-th/9912028].
36. P.H. Frampton and T.W. Kephart, Classification of conformality models based on nonabelian orbifolds 2001 Phys. Rev. D 64 086007 [hep-th/0011186].
37. w in a conformal approach to coupling unification 2001 Phys. Lett. B 520 331 [hep-ph/0104211].
38. T.W. Kephart and T.J. Weiler, Magnetic monopoles as the highest energy cosmic ray primaries 1996 Astropart. Phys. 4 271 [astro-ph/9505134].
39. S.D. Wick, T.W. Kephart, T.J. Weiler and P.L. Biermann, Signatures for a cosmic flux of magnetic monopoles 2003 Astropart. Phys. 18 663 [astro-ph/0001233].
40. I.F.M. Albuquerque, L. Hui and E.W. Kolb, High energy neutrinos from superheavy dark matter annihilation 2001 Phys. Rev. D 64 083504 [hep-ph/0009017].
41. D.J.H. Chung, P. Crotty, E.W. Kolb and A. Riotto, On the gravitational production of superheavy dark matter 2001 Phys. Rev. D 64 043503 [hep-ph/0104100].
42. G. Lazarides and Q. Shafi, Extended structures at intermediate scales in an inflationary cosmology 1984 Phys. Lett. B 148 35.
43. G. Lazarides, C. Panagiotakopoulos and Q. Shafi, Phenomenology and cosmology with superstrings 1986 Phys. Rev. Lett. 56 432
44. G. Lazarides and Q. Shafi, Anomalous discrete symmetries and the domain wall problem 1993 Nucl. Phys. B 392 61
45. G. Lazarides and Q. Shafi, A predictive inflationary scenario without the gauge singlet 1993 Phys. Lett. B 308 17 [hep-ph/9304247].
46. G. Lazarides, C. Panagiotakopoulos and Q. Shafi, Magnetic monopoles from superstring models 1987 Phys. Rev. Lett. 58 1707
47. D.H. Lyth and E.D. Stewart, Cosmology with a TeV mass GUT Higgs 1995 Phys. Rev. Lett. 75 201 [hep-ph/9502417].
48. G. Lazarides and Q. Shafi, Monopoles, axions and intermediate mass dark matter 2000 Phys. Lett. B 489 194 [hep-ph/0006202].
49. W. Rhode [AMANDA Collaboration], Atmospheric neutrinos, WIMPs and monopoles: Physics with the AMANDA neutrino telescope prepared for DARK 2002: 4th International Heidelberg Conference on Dark Matter in Astro and Particle Physics, Cape Town, South Africa, 4-9 Feb 2002.
50. MACRO collaboration, M. Ambrosio et al., Final search for lightly ionizing particles with the macro detector [hep-ex/0402006].
51. S. Cecchini et al., Search for intermediate mass magnetic monopoles and nuclearites with the SLIM experiment 2005 Radiat. Meas. 40 405 [hep-ex/0503003].
52. Baikal collaboration, V. Aynutdinov et al., Search for relativistic magnetic monopoles with the Baikal neutrino telescope NT200 [astro-ph/0507713].
53. 1/2 ≤ 1.96 TeV, 2006 Phys. Rev. Lett. 96 201801 [hep-ex/0509015].
54. D0 collaboration, B. Abbott et al., A search for heavy pointlike Dirac monopoles 1998 Phys. Rev. Lett. 81 524 [hep-ex/9803023].
55. G.R. Kalbfleisch, W. Luo, K.A. Milton, E.H. Smith and M.G. Strauss, Limits on production of magnetic monopoles utilizing samples from the D0 and CDF detectors at the Tevatron 2004 Phys. Rev. D 69 052002 [hep-ex/0306045].
56. S.F. King and Q. Shafi, Minimal supersymmetric SU(4) × SU(2)l × SU(2)r, 1998 Phys. Lett. B 422 135 [hep-ph/9711288].
57. M. Daniel, G. Lazarides and Q. Shafi, SU(5) Monopoles, magnetic symmetry and confinement,1980 Nucl. Phys. B 170 156