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Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Standard

Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter. / McDonald, John; Sahu, Narendra; Sarkar, Utpal.
In: Journal of Cosmology and Astroparticle Physics, Vol. 2008, No. 4, 04.2008, p. 37.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

McDonald, J, Sahu, N & Sarkar, U 2008, 'Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter.', Journal of Cosmology and Astroparticle Physics, vol. 2008, no. 4, pp. 37. https://doi.org/10.1088/1475-7516/2008/04/037

APA

McDonald, J., Sahu, N., & Sarkar, U. (2008). Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter. Journal of Cosmology and Astroparticle Physics, 2008(4), 37. https://doi.org/10.1088/1475-7516/2008/04/037

Vancouver

McDonald J, Sahu N, Sarkar U. Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter. Journal of Cosmology and Astroparticle Physics. 2008 Apr;2008(4):37. doi: 10.1088/1475-7516/2008/04/037

Author

McDonald, John ; Sahu, Narendra ; Sarkar, Utpal. / Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter. In: Journal of Cosmology and Astroparticle Physics. 2008 ; Vol. 2008, No. 4. pp. 37.

Bibtex

@article{7296b7caaac64340885e3f1c31ea6b15,
title = "Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter.",
abstract = "We propose an extension of the standard model with a B–L global symmetry that is broken softly at the TeV scale. The neutrinos acquire masses through a type-II seesaw while the lepton (L) asymmetry arises in the singlet sector but without B–L-number violation. The model has the virtue that the scale of L-number violation (Λ) giving rise to neutrino masses is independent of the scale of leptogenesis (Λ'). As a result the model can explain neutrino masses, singlet scalar dark matter and leptogenesis at the TeV scale. The stability of the dark matter is ensured by a surviving Z2 symmetry, which could be lifted at the Planck scale, thereby allowing Planck scale suppressed decay of singlet scalar dark matter particles of mass 3 MeV to e+e- pairs in the Galactic halo. The model also predicts a few hundred GeV doubly charged scalar and a long-lived charged fermion, whose decay can be studied at the Large Hadron Collider (LHC) and International Linear Collider (ILC).",
keywords = "dark matter, neutrino properties, baryon asymmetry, physics of the early universe",
author = "John McDonald and Narendra Sahu and Utpal Sarkar",
year = "2008",
month = apr,
doi = "10.1088/1475-7516/2008/04/037",
language = "English",
volume = "2008",
pages = "37",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "4",

}

RIS

TY - JOUR

T1 - Type II See-Saw at Collider, Lepton Asymmetry and Singlet Scalar Dark Matter.

AU - McDonald, John

AU - Sahu, Narendra

AU - Sarkar, Utpal

PY - 2008/4

Y1 - 2008/4

N2 - We propose an extension of the standard model with a B–L global symmetry that is broken softly at the TeV scale. The neutrinos acquire masses through a type-II seesaw while the lepton (L) asymmetry arises in the singlet sector but without B–L-number violation. The model has the virtue that the scale of L-number violation (Λ) giving rise to neutrino masses is independent of the scale of leptogenesis (Λ'). As a result the model can explain neutrino masses, singlet scalar dark matter and leptogenesis at the TeV scale. The stability of the dark matter is ensured by a surviving Z2 symmetry, which could be lifted at the Planck scale, thereby allowing Planck scale suppressed decay of singlet scalar dark matter particles of mass 3 MeV to e+e- pairs in the Galactic halo. The model also predicts a few hundred GeV doubly charged scalar and a long-lived charged fermion, whose decay can be studied at the Large Hadron Collider (LHC) and International Linear Collider (ILC).

AB - We propose an extension of the standard model with a B–L global symmetry that is broken softly at the TeV scale. The neutrinos acquire masses through a type-II seesaw while the lepton (L) asymmetry arises in the singlet sector but without B–L-number violation. The model has the virtue that the scale of L-number violation (Λ) giving rise to neutrino masses is independent of the scale of leptogenesis (Λ'). As a result the model can explain neutrino masses, singlet scalar dark matter and leptogenesis at the TeV scale. The stability of the dark matter is ensured by a surviving Z2 symmetry, which could be lifted at the Planck scale, thereby allowing Planck scale suppressed decay of singlet scalar dark matter particles of mass 3 MeV to e+e- pairs in the Galactic halo. The model also predicts a few hundred GeV doubly charged scalar and a long-lived charged fermion, whose decay can be studied at the Large Hadron Collider (LHC) and International Linear Collider (ILC).

KW - dark matter

KW - neutrino properties

KW - baryon asymmetry

KW - physics of the early universe

U2 - 10.1088/1475-7516/2008/04/037

DO - 10.1088/1475-7516/2008/04/037

M3 - Journal article

VL - 2008

SP - 37

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 4

ER -