Extended double seesaw model and low scale leptogenesis

Sin Kyu Kang, C. S. Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant leptogenesls. Thus, the so-called gravitino problem encountered in the typical supersymmetric seesaw model can be avoided. It is showed that an introduction of the new singlet fermion leads to a new contribution which can enhance the lepton asymmetry for certain range of parameter space.

Original languageEnglish
Pages (from-to)1505-1512
Number of pages8
JournalInternational Journal of Modern Physics E
Volume16
Issue number5
DOIs
Publication statusPublished - 2007 Jun 1

Fingerprint

neutrinos
gravitinos
leptons
fermions
asymmetry

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Physics and Astronomy(all)

Cite this

@article{8d14d4ec2f6e48439cd8d205dcd71db9,
title = "Extended double seesaw model and low scale leptogenesis",
abstract = "We propose a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant leptogenesls. Thus, the so-called gravitino problem encountered in the typical supersymmetric seesaw model can be avoided. It is showed that an introduction of the new singlet fermion leads to a new contribution which can enhance the lepton asymmetry for certain range of parameter space.",
author = "Kang, {Sin Kyu} and Kim, {C. S.}",
year = "2007",
month = "6",
day = "1",
doi = "10.1142/S0218301307006848",
language = "English",
volume = "16",
pages = "1505--1512",
journal = "International Journal of Modern Physics E",
issn = "0218-3013",
publisher = "World Scientific Publishing Co. Pte Ltd",
number = "5",

}

Extended double seesaw model and low scale leptogenesis. / Kang, Sin Kyu; Kim, C. S.

In: International Journal of Modern Physics E, Vol. 16, No. 5, 01.06.2007, p. 1505-1512.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Extended double seesaw model and low scale leptogenesis

AU - Kang, Sin Kyu

AU - Kim, C. S.

PY - 2007/6/1

Y1 - 2007/6/1

N2 - We propose a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant leptogenesls. Thus, the so-called gravitino problem encountered in the typical supersymmetric seesaw model can be avoided. It is showed that an introduction of the new singlet fermion leads to a new contribution which can enhance the lepton asymmetry for certain range of parameter space.

AB - We propose a variant of seesaw mechanism by introducing extra singlet neutrinos, with which we show how the low scale leptogenesis is realized without imposing the tiny mass splitting between two heavy Majorana neutrinos required in the resonant leptogenesls. Thus, the so-called gravitino problem encountered in the typical supersymmetric seesaw model can be avoided. It is showed that an introduction of the new singlet fermion leads to a new contribution which can enhance the lepton asymmetry for certain range of parameter space.

UR - http://www.scopus.com/inward/record.url?scp=34547330056&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=34547330056&partnerID=8YFLogxK

U2 - 10.1142/S0218301307006848

DO - 10.1142/S0218301307006848

M3 - Article

AN - SCOPUS:34547330056

VL - 16

SP - 1505

EP - 1512

JO - International Journal of Modern Physics E

JF - International Journal of Modern Physics E

SN - 0218-3013

IS - 5

ER -