Leptogenesis in the light of Super-Kamiokande data and a realistic string model

Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

Volumn 452, Issue 1-2, 1999, Pages 87-97

  Ellis, John ^a   Lola, S ^a   Nanopoulos, D V ^b,c,d  

^a CERN   (Switzerland)

^b TEXAS A AND M UNIVERSITY   (United States)

^c HOUSTON ADVANCED RESEARCH CENTER   (United States)

^d BIOMEDICAL RESEARCH FOUNDATION   (Greece)

Author keywords

[No Author keywords available]

Indexed keywords

EID: 0002670204     PISSN: 03702693     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0370-2693(99)00268-3     Document Type: Article

References (52)

1. V.A. Kuzmin, V.A. Rubakov, M.E. Shaposhnikov, Phys. Lett. B 155 (1985) 36.
2. M. Fukugita, T. Yanagida, Phys. Lett. B 174 (1986) 45.
3. For a review on heavy Majorana neutrinos and baryogenesis, see, e.g., A. Pilaftsis, hep-ph/9812256 and references therein.
4. Y. Fukuda et al., Super-Kamiokande Collaboration, hep-ex/9803006, hep-ex/9805006; hep-ex/9807003.
5. S. Hatakeyama et al., Kamiokande Collaboration, hepex/9806038; M. Ambrosio et al., MACRO Collaboration, hep-ex/9807005; M. Spuno, for the MACRO Collaboration, hep-ex/9808001; W.W.M. Allison et al., Soudan-2 Collaboration, hep-ex/9901024.
6. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
7. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
8. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
9. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
10. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
11. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
12. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
13. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
14. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
15. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
16. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
17. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
18. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
19. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
20. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
21. For recent work, see for example: A. Joshipura, A. Smirnov, Phys. Lett. B 439 (1998) 103; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Lett. B 437 (1998) 107; S.F. King, Phys. Lett. B 439 (1998) 350; B.C. Allanach, hep-ph/9806294; R. Barbien, L.J. Hall, D. Smith, A. Strumia, N. Weiner, hep-ph/9807235; G. Lazandes, N. Vlachos, Phys. Lett. B 441 (1998) 46; M. Tanimoto, Phys. Rev. D 59 (1999) 017304; M. Gonzalez-Garcia, H. Nunokawa, O.L.G. Perez, J.W.F. Valle, hep-ph/9807305; M. Jezabek, Y. Sumino, Phys. Lett. B 440 (1998) 327; J. Pati, hep-ph/9807315; V. Barger, T. Weiler, K. Whisnant, Phys. Lett. B 440 (1998) 1; G. Altarelli, F. Feruglio, Phys. Lett. B 439 (1998) 112; JHEP 9811 (1998) 021; hep-ph/9812475. E. Ma, Phys. Lett. B 442 (1998) 238; S.M. Bilenky, C. Giunti, W. Grimus, hep-ph/9812360; G.L. Fogli, E. Lisi, A. Marrone, G. Scioscia, Phys. Rev. D 59 (1999) 033001; S. Davidson, S. King, Phys. Lett. B 445 (1998) 191; R. Barbien, L.J. Hall, A. Strumia, hep-ph/9808333; V. Barger, S. Pakvasa, T.J. Weiler, K. Whisnant, Phys. Rev. D 58 (1998) 093016; C.H. Albright, S.M. Barr, Phys. Rev. D 58 (1998) 013002; J.K. Elwood, N. Irges, P. Ramond, Phys. Rev. Lett. 81 (1998) 5064; M. Fukugita, M. Taminoto, T. Yanagida, hep-ph/9809554; W. Buchmuller, T. Yanagida, hep-ph/9810308; Y. Grossman, Y. Nir, Y. Shadmi, JHEP 9810 (1998) 007; C.D. Froggatt, M. Gibson, H.B. Nielsen, hep-ph/9811265; Q. Shafi, Z. Tavartkiladze, hep-ph/9811282; Z. Berezhiani, A. Rossi, hep-ph/9811447; C. Wettench, hep-ph/9812426; R. Barbien, L.J. Hall, G.L. Kane, G.G. Ross, hep-ph/9901228; S. Lola, G.G. Ross, hep-ph/9902283.
22. J. Ellis, G.K. Leontaris, S. Lola, D.V. Nanopoulos, hep-ph/9808251, to appear in Eur. Jour. Phys. C.
23. G.K. Leontaris, D.V. Nanopoulos, Phys. Lett. B 212 (1988) 327.
24. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
25. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
26. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
27. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
28. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
29. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
30. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
31. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
32. H. Dreiner, G.K. Leontaris, S. Lola, G.G. Ross, C. Scheich, Nucl. Phys. B 436 (1995) 461; G.K. Leontaris, S. Lola, G.G. Ross, Nucl. Phys. B 454 (1995) 25; G.K. Leontaris, S. Lola, C. Scheich, J. Vergados, Phys. Rev. D 53 (1996) 6381; P. Binetruy, S. Lavignac, P. Ramond, Nucl. Phys. B 477 (1996) 353; Y. Grossman, Y. Nir, Nucl. Phys. B 448 (1995) 30; B.C. Allanach, S.F. King, Nucl. Phys. B 459 (1996) 75; S. Lola, J. Vergados, Progress in Particle and Nuclear Physics 40 (1998) 71; Y. Achiman, T. Greiner, Nucl. Phys. B 443 (1995) 3; P. Binetruy, S. Lavignac, S. Petcov, P. Ramond, Nucl. Phys. B 496 (1997) 3.
33. I. Antoniadis, J. Ellis, J. Hagelin, D.V. Nanopoulos, Phys. Lett. B 194 (1987) 231; B 231 (1989) 65.
34. I. Antoniadis, J. Ellis, J. Hagelin, D.V. Nanopoulos, Phys. Lett. B 194 (1987) 231; B 231 (1989) 65.
35. J. Ellis, G.K. Leontaris, S. Lola, D.V. Nanopoulos, Phys. Lett. B 425 (1998) 86.
36. M. Flanz, E.A. Paschos, U. Sarkar, Phys. Lett. B 345 (1995) 248; M. Flanz, E.A. Paschos, U. Sarkar, J. Weiss, Phys. Lett. B 389 (1996) 693; L. Covi, E. Roulet, Phys. Lett. B 399 (1997) 113; A. Pilaftsis, Phys. Rev. D 56 (1997) 5431.
37. M. Flanz, E.A. Paschos, U. Sarkar, Phys. Lett. B 345 (1995) 248; M. Flanz, E.A. Paschos, U. Sarkar, J. Weiss, Phys. Lett. B 389 (1996) 693; L. Covi, E. Roulet, Phys. Lett. B 399 (1997) 113; A. Pilaftsis, Phys. Rev. D 56 (1997) 5431.
38. M. Flanz, E.A. Paschos, U. Sarkar, Phys. Lett. B 345 (1995) 248; M. Flanz, E.A. Paschos, U. Sarkar, J. Weiss, Phys. Lett. B 389 (1996) 693; L. Covi, E. Roulet, Phys. Lett. B 399 (1997) 113; A. Pilaftsis, Phys. Rev. D 56 (1997) 5431.
39. M. Flanz, E.A. Paschos, U. Sarkar, Phys. Lett. B 345 (1995) 248; M. Flanz, E.A. Paschos, U. Sarkar, J. Weiss, Phys. Lett. B 389 (1996) 693; L. Covi, E. Roulet, Phys. Lett. B 399 (1997) 113; A. Pilaftsis, Phys. Rev. D 56 (1997) 5431.
40. L. Covi, E. Roulet, F. Vissani, Phys. Lett. B 384 (1996) 169.
41. M.A. Luty, Phys. Rev. D 45 (1992) 455.
42. M. Plumacher, Z. Phys. C 74 (1997) 549.
43. E.W. Kolb, M.S. Turner, The Early Universe, Frontiers in Physics by Addison-Wesley publishing company.
44. L. Kofman, A. Linde, A.A. Starobinsky, Phys. Rev. Lett. 76 (1996) 1011; I.I. Tkachev, Phys. Lett. B 376 (1996) 35; G.W. Anderson, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 3716; E.W. Kolb, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 4290.
45. L. Kofman, A. Linde, A.A. Starobinsky, Phys. Rev. Lett. 76 (1996) 1011; I.I. Tkachev, Phys. Lett. B 376 (1996) 35; G.W. Anderson, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 3716; E.W. Kolb, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 4290.
46. L. Kofman, A. Linde, A.A. Starobinsky, Phys. Rev. Lett. 76 (1996) 1011; I.I. Tkachev, Phys. Lett. B 376 (1996) 35; G.W. Anderson, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 3716; E.W. Kolb, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 4290.
47. L. Kofman, A. Linde, A.A. Starobinsky, Phys. Rev. Lett. 76 (1996) 1011; I.I. Tkachev, Phys. Lett. B 376 (1996) 35; G.W. Anderson, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 3716; E.W. Kolb, A. Linde, A. Riotto, Phys. Rev. Lett. 77 (1996) 4290.
48. See for example: M.A. Luty [14]; W. Buchmuller, M. Plumacher, Phys. Lett. B 389 (1996) 73; J. Faridani, S. Lola, P. O' Donnell, U. Sarkar, hep-ph/9804261, to appear in the Eur. Jour. Phys. C; M. Flanz, E.A. Paschos, Phys. Rev. D 58 (1998) 113009.
49. See for example: M.A. Luty [14]; W. Buchmuller, M. Plumacher, Phys. Lett. B 389 (1996) 73; J. Faridani, S. Lola, P. O' Donnell, U. Sarkar, hep-ph/9804261, to appear in the Eur. Jour. Phys. C; M. Flanz, E.A. Paschos, Phys. Rev. D 58 (1998) 113009.
50. See for example: M.A. Luty [14]; W. Buchmuller, M. Plumacher, Phys. Lett. B 389 (1996) 73; J. Faridani, S. Lola, P. O' Donnell, U. Sarkar, hep-ph/9804261, to appear in the Eur. Jour. Phys. C; M. Flanz, E.A. Paschos, Phys. Rev. D 58 (1998) 113009.
51. B. Campbell, J. Ellis, J. Hagelin, D.V. Nanopoulos, K.A. Olive, Phys. Lett. B 197 (1987) 355.
52. J. Ellis, D.V. Nanopoulos, K. Olive, Phys. Lett. B 300 (1993) 121.