Leptogenesis and low energy CP violation, a link

Endoh, T.; Kaneko, Satoru; Kang, Sin Kyu; Morozumi, Takuya; Tanimoto, Morimitsu

doi:10.1088/0954-3899/29/8/365

Cited by 13 publications

(2 citation statements)

References 3 publications

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“…Therefore it is very fascinating that the corresponding phenomenon of chirality changing processes in strong interactions might be observed in heavy decay ion collisions at the LHC [61,62]. The evolution of lepton number ( ) and baryon number ( ) is given by a set of coupled equations [63] by the electroweak sphaleron processes which violates ( + ) but conserves ( − ). At temperature above the electroweak phase transition temperature , the baryon asymmetry can be expressed in terms of ( − ) number density as [64] ( > ) = 8 + 4 22 + 13 ( − ) ,…”

Section: Leptogenesismentioning

confidence: 99%

Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles

Francis¹

2014

Advances in High Energy Physics

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We investigate the comparative studies of cosmological baryon asymmetry in different neutrino mass models with and without 13 by considering the three-diagonal form of Dirac neutrino mass matrices and the three aspects of leptogenesis, unflavoured, flavoured, and nonthermal. We found that the estimations of any models with 13 are consistent in all the three stages of calculations of leptogenesis and the results are better than the predictions of any models without 13 which are consistent in a piecemeal manner with the observational data in all the three stages of leptogenesis calculations. For the normal hierarchy of Type-IA with charged lepton matrix, model with and without 13 predicts inflaton mass required to produce the observed baryon asymmetry to be ∼ 2.2 × 10 11 GeV and ∼ 3.6 × 10 10 GeV, and the corresponding reheating temperatures are ∼ 4.86 × 10 6 GeV and ∼ 4.50 × 10 6 GeV respectively. These predictions are not in conflict with the gravitino problem which required the reheating temperature to be below 10 7 GeV. And these values apply to the recent discovery of Higgs boson of mass ∼125 GeV. One can also have the right order of relic dark matter abundance only if the reheating temperature is bounded to below 10 7 GeV.

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Section: Leptogenesismentioning

confidence: 99%

Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles

Francis¹

2014

Advances in High Energy Physics

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“…28 Endoh et al studied the connection between the heavy Majorana phases and Jarlskog invariant 20 as well as the connection between leptogenesis and low-energy CP violation. 29 Guo and Xing addressed that all nontrivial CP-violating phases can be determined 30 with so-called Frampton-Glashow-Yanagida (FGY) ansatz (one of the two-zero texture schemes). 19 The predictions for leptogenesis with one-zero texture are discussed by Ibarra and Ross.…”

Section: Introductionmentioning

confidence: 99%

Bipair Neutrino Mixing and Leptogenesis

Kitabayashi

2013

Mod. Phys. Lett. A

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We estimate the baryon-photon ratio in the Universe via the leptogenesis scenario in the framework of the minimal seesaw model with a minimally modified bipair neutrino mixing. We assume that one of the elements of the 3×2 Dirac mass matrix m D is exactly zero. It turns out that the lepton asymmetry as well as baryon number of the Universe definitely depends on the reactor neutrino mixing angle in the cases of (m D ) 11 = 0 and (m D ) 12 = 0. The allowed region of the Majorana CP phase is separated into three regions related to the assumption of either (m D ) 11 = 0, (m D ) 21,31 = 0 or (m D ) 12 = 0.

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Neutrino mass models with and without θ 13 in predicting leptogenesis

Francis

2015

Indian J Phys

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Leptogenesis and low energy CP violation, a link

Abstract: How is CP violation of low energy related to CP violation required from baryon number asymmetry ? We give an example which shows a direct link between CP violation of neutrino oscillation and baryogenesis through leptogenesis.

Cited by 13 publications

References 3 publications

Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles

Cosmic Baryon Asymmetry in Different Neutrino Mass Models with Mixing Angles

Bipair Neutrino Mixing and Leptogenesis

Neutrino mass models with and without θ 13 in predicting leptogenesis

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