Leptogenesis in left-right symmetric theories

被引：68

作者：

Joshipura, AS ^{[1
]}

Paschos, EA

Rodejohann, W

机构：

[1] Phys Res Lab, Theoret Phys Grp, Ahmadabad 380009, Gujarat, India

[2] Univ Dortmund, Inst Theoret Phys, D-44221 Dortmund, Germany

来源：

NUCLEAR PHYSICS B | 2001年 / 611卷 / 1-3期

关键词：

D O I：

10.1016/S0550-3213(01)00346-7

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

The masses and mixing of the light left-handed neutrinos can be related to those of the heavy right-handed neutrinos in left-right symmetric theories. Properties of the light neutrinos are measured in terrestrial experiments and the CP-violating decays of their heavy counterparts produce a baryon asymmetry via the well-known leptogenesis mechanism. The left-handed Higgs triplet, present in left-right symmetric theories, modifies the usual see-saw formula. It is possible to relate the lepton asymmetry to the light neutrino parameters when the triplet and the top quark through the usual see-saw mechanism give the dominant contribution to the neutrino mass matrix. We find that in this situation the small angle MSW and vacuum solutions produce reasonable asymmetry, whereas the large angle MSW case requires extreme fine-tuning of the three phases in the mixing matrix. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：227 / 238

页数：12

共 59 条

[11] NEUTRINO MASS EXPLANATIONS OF SOLAR AND ATMOSPHERIC NEUTRINO DEFICITS AND HOT DARK-MATTER [J].

CALDWELL, DO ;

MOHAPATRA, RN .

PHYSICAL REVIEW D, 1993, 48 (07) :3259-3263

[12]

CHUN EJ, HEPPH0001296

[13] CP violating decays in leptogenesis scenarios [J].

Covi, L ;

Roulet, E ;

Vissani, F .

PHYSICS LETTERS B, 1996, 384 (1-4) :169-174

[14]

DESAI BR, HEPPH0007233

[15] Summary [J].

Ellis, J .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2001, 91 :503-516

[16] Leptogenesis in the light of Super-Kamiokande data and a realistic string model [J].

Ellis, J ;

Lola, S ;

Nanopoulos, DV .

PHYSICS LETTERS B, 1999, 452 (1-2) :87-97

[17] Leptogenesis and neutrino parameters [J].

Falcone, D ;

Tramontano, F .

PHYSICAL REVIEW D, 2001, 63 (07)

[18]

FALCONE D, HEPPH0101151

[19] BARYON ASYMMETRY OF THE UNIVERSE IN THE STANDARD MODEL [J].

FARRAR, GR ;

SHAPOSHNIKOV, ME .

PHYSICAL REVIEW D, 1994, 50 (02) :774-818

[20] Baryogenesis through mixing of heavy Majorana neutrinos [J].

Flanz, M ;

Paschos, EA ;

Sarkar, U ;

Weiss, J .

PHYSICS LETTERS B, 1996, 389 (04) :693-699

← 1 2 3 4 5 6 →