TY - JOUR
T1 - Neutrino phenomenology, dark energy and leptogenesis from pseudo-Nambu-Goldstone bosons
AU - Hill, C. T.
AU - Mocioiu, I.
AU - Paschos, E. A.
AU - Sarkar, U.
N1 - Funding Information:
C.T. Hill thanks Dortmund University for the award of a Gambrinus Fellowship and its hospitality during the early stages of this work. E.A. Paschos thanks the Theory Group of Fermilab for its hospitality. U. Sarkar thanks the Institut für Physik, Univ. Dortmund and Alexander von Humboldt Foundation for their support. The work of I. Mocioiu was supported in part by the National Science Foundation grant PHY-0555368 and the work for two of us (EAP and US) by BMBF, Bonn under contract 05 HT 4PEA/9.
PY - 2007/7/26
Y1 - 2007/7/26
N2 - We consider a model of dynamical neutrino masses via the see-saw mechanism. Nambu-Goldstone bosons (majorons) arise associated with the formation of the heavy right-handed Majorana masses. These bosons then acquire naturally soft masses (become pNGB's) at loop level via the Higgs-Yukawa mass terms. These models, like the original neutrino pNGB quintessence schemes of the 1980's [C.T. Hill, D.N. Schramm, J.N. Fry, Nucl. Part. Phys. 19 (1989) 25; J.A. Frieman, C.T. Hill, R. Watkins, Phys. Rev. D 46 (1992) 1226; A.K. Gupta, C.T. Hill, R. Holman, E.W. Kolb, Phys. Rev. D 45 (1992) 441; J.A. Frieman, C.T. Hill, A. Stebbins, I. Waga, Phys. Rev. Lett. 75 (1995) 2077, astro-ph/9505060] that proceed through the Dirac masses, are natural, have cosmological implications through mass varying neutrinos, long range forces, and provide a soft potential for dark energy. We further argue that these models can explain leptogenesis naturally through the decays of the right-handed neutrinos.
AB - We consider a model of dynamical neutrino masses via the see-saw mechanism. Nambu-Goldstone bosons (majorons) arise associated with the formation of the heavy right-handed Majorana masses. These bosons then acquire naturally soft masses (become pNGB's) at loop level via the Higgs-Yukawa mass terms. These models, like the original neutrino pNGB quintessence schemes of the 1980's [C.T. Hill, D.N. Schramm, J.N. Fry, Nucl. Part. Phys. 19 (1989) 25; J.A. Frieman, C.T. Hill, R. Watkins, Phys. Rev. D 46 (1992) 1226; A.K. Gupta, C.T. Hill, R. Holman, E.W. Kolb, Phys. Rev. D 45 (1992) 441; J.A. Frieman, C.T. Hill, A. Stebbins, I. Waga, Phys. Rev. Lett. 75 (1995) 2077, astro-ph/9505060] that proceed through the Dirac masses, are natural, have cosmological implications through mass varying neutrinos, long range forces, and provide a soft potential for dark energy. We further argue that these models can explain leptogenesis naturally through the decays of the right-handed neutrinos.
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U2 - 10.1016/j.physletb.2007.06.006
DO - 10.1016/j.physletb.2007.06.006
M3 - Article
AN - SCOPUS:34447268220
SN - 0370-2693
VL - 651
SP - 188
EP - 194
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 2-3
ER -