Affleck-Dine leptogenesis with varying Peccei-Quinn scale

被引：5

作者：

Bae, Kyu Jung ^{[1
]}

Baer, Howard ^{[2
]}

Hamaguchi, Koichi ^{[3
,4
]}

Nakayama, Kazunori ^{[3
,4
]}

机构：

[1] Inst for Basic Sci Korea, Ctr Theoret Phys Universe, 193 Munji Ro, Daejeon 34051, South Korea

[2] Univ Oklahoma, Dept Phys & Astron, 440 West Brooks, Norman, OK 73019 USA

[3] Univ Tokyo, Grad Sch Sci, Dept Phys, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

[4] Univ Tokyo, Kavli Inst Phys & Math Universe, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778583, Japan

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2017年 / 02期

关键词：

Beyond Standard Model; Cosmology of Theories beyond the SM; Supersymmetric Standard Model; SUPERSYMMETRIC STANDARD MODEL; STRONG CP-PROBLEM; FLAT-DIRECTION BARYOGENESIS; EARLY UNIVERSE; INFLATIONARY COSMOLOGY; CHAOTIC INFLATION; INVISIBLE AXION; HARMLESS AXION; AXINO MASS; MATTER;

D O I：

10.1007/JHEP02(2017)017

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 Affleck-Dine leptogenesis scenario along the LH (u) flat direction is reconsidered. It is known that successful Affleck-Dine leptogenesis requires that the lightest neutrino mass is extremely small. This situation can be significantly relaxed if the neutrino mass in the early universe is different from the present one. We consider a supersymmetric Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) type model, which provides a solution to the strong CP problem and generates a SUSY mu-term and right-handed neutrino masses. If the PQ scale during lepton number generation is much larger than the present value, leptogenesis is very efficient so that enough baryon number can be generated without introducing a hierarchically small neutrino mass. The final baryon asymmetry is related to the mu-term, and hence linked to the level of electroweak fine-tuning. We also show the PQ breaking scalar dynamics that keeps a large PQ breaking scale during inflation and lepton number generation. The mu-term generating superpotential plays an important role for preserving the lepton asymmetry during saxion oscillation. In this scenario, the axion isocurvature perturbation is naturally suppressed.

引用

页数：19

共 64 条

[1] A COSMOLOGICAL BOUND ON THE INVISIBLE AXION [J].

ABBOTT, LF ;

SIKIVIE, P .

PHYSICS LETTERS B, 1983, 120 (1-3) :133-136

[2]

Abe N., 2002, JHEP, V01

[3] Planck 2015 results XX. Constraints on inflation [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Arroja, F. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Ballardini, M. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartolo, N. ;

Battaner, E. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bondi, J. R. ;

Borrillu, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Christensen, P. R. ;

Churchl, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Contreras, D. ;

Couchot, F. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[4] Planck 2015 results XIII. Cosmological parameters [J].

Ade, P. A. R. ;

Aghanim, N. ;

Arnaud, M. ;

Ashdown, M. ;

Aumont, J. ;

Baccigalupi, C. ;

Banday, A. J. ;

Barreiro, R. B. ;

Bartlett, J. G. ;

Bartolo, N. ;

Battaner, E. ;

Battye, R. ;

Benabed, K. ;

Benoit, A. ;

Benoit-Levy, A. ;

Bernard, J. -P. ;

Bersanelli, M. ;

Bielewicz, P. ;

Bock, J. J. ;

Bonaldi, A. ;

Bonavera, L. ;

Bond, J. R. ;

Borrill, J. ;

Bouchet, F. R. ;

Boulanger, F. ;

Bucher, M. ;

Burigana, C. ;

Butler, R. C. ;

Calabrese, E. ;

Cardoso, J. -F. ;

Catalano, A. ;

Challinor, A. ;

Chamballu, A. ;

Chary, R. -R. ;

Chiang, H. C. ;

Chluba, J. ;

Christensen, P. R. ;

Church, S. ;

Clements, D. L. ;

Colombi, S. ;

Colombo, L. P. L. ;

Combet, C. ;

Coulais, A. ;

Crill, B. P. ;

Curto, A. ;

Cuttaia, F. ;

Danese, L. ;

Davies, R. D. ;

Davis, R. J. ;

de Bernardis, P. .

ASTRONOMY & ASTROPHYSICS, 2016, 594

[5] A NEW MECHANISM FOR BARYOGENESIS [J].

AFFLECK, I ;

DINE, M .

NUCLEAR PHYSICS B, 1985, 249 (02) :361-380

[6] Reheating and supersymmetric flat-direction baryogenesis [J].

Allahverdi, R ;

Campbell, BA ;

Ellis, J .

NUCLEAR PHYSICS B, 2000, 579 (1-2) :355-375

[7] Some issues in flat direction baryogenesis [J].

Anisimov, A ;

Dine, M .

NUCLEAR PHYSICS B, 2001, 619 (1-3) :729-740

[8]

[Anonymous], HEPPH0212305

[9]

[Anonymous], 1991, Usp. Fiz. Nauk, DOI [10.1070/PU1991v034n05ABEH002497, DOI 10.1070/PU1991V034N05ABEH002497]

[10] Leptogenesis in an inflationary universe [J].

Asaka, T ;

Hamaguchi, K ;

Kawasaki, M ;

Yanagida, T .

PHYSICAL REVIEW D, 2000, 61 (08)

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