Kinetic Monte Carlo study of triplet-triplet annihilation ...
Dark Matter and a Suppression Mechanism for Neutrino Masses in the Higgs Triplet Model
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1/11 Hiroaki SUGIYAMA (Univ. of Toyama, Japan) based on ‘S. Kanemura, HS, arXiv:1202.5231’
description
Dark Matter and a Suppression Mechanism for Neutrino Masses in the Higgs Triplet Model. Hiroaki SUGIYAMA. (Univ. of Toyama, Japan). based on ‘S. Kanemura, HS, arXiv:1202.5231 ’. Higgs Triplet Model. the SM + a complex Higgs triplet of. W. Konetschny and W. Kumer, PLB 70 , 433 (1977). - PowerPoint PPT Presentation
Transcript of Dark Matter and a Suppression Mechanism for Neutrino Masses in the Higgs Triplet Model
1/11
Hiroaki SUGIYAMA(Univ. of Toyama, Japan)
based on ‘S. Kanemura, HS, arXiv:1202.5231’
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Higgs Triplet Model
the SM + a complex Higgs triplet of
Majorana mass matrix
Neutrino Mass
Yukawa tem
Soft breaking of
W. Konetschny and W. Kumer, PLB70, 433 (1977)M. Magg and C. Wetterich, PLB94, 61 (1980)T.P. Cheng and L.F. Li, PRD22, 2860 (1980)J. Schechter and J.W.F. Valle, PRD22, 2227 (1980)
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Small option seems charming
Light new particles (ex. )
Sizable new coupling constants (ex. )
production at LHC
sizable LFV
We want to suppress
Motivations
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We want to supply the dark matter to the HTM
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Suppression of parameter
Supplying DM candidate
Resolve these issues at once
Surprising model
(some relation between them)
“Idea is what resolves multiple issues at once”- Shigeru Miyamoto -
Our model
6/11Our Model
Suppression of parameter
by conservation at the tree level
Only scalar sectorSM
HTM
: forbidden
: allowed
: at the loop level
is extended.
broken by
S. Kanemura, HS, arXiv:1202.5231
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Y. Chikashige, R.N. Mohapatra, and R.D. Peccei., PLB98, 265 (1981)
c.f. Constraint from cooling of white dwarfs :
Singlet Majoron Interaction to Matter
8/11Our Model
is DM candidate
odd particles
Only scalar sectorSM
HTMis extended.
9/111-loop generation of parameter by utilizing DM candidate
(Dark matter candidates)contribute to the loop
-odd particles
“A. oryzae diagram” Moyashimon
10/11Estimation of Suppression of
Case of (inert doublet DM)
Case of (inert singlet DM)
satisfy LEP-II and WMAPE. Lundstrom et al., PRD79, 035013 (2009)
Example:
Example:
DM
11/11Summary
The Higgs Triplet Model is extended.
Dark matter candidate
one-loop
A strong suppression of parameter is possible.
For example, suppressed
(composed of and )
“one-loop”
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Backup
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Yukawa interaction with a complex Higgs triplet
Higgs Triplet Model
Higgs potential
14/11Scalar Potential in Our Model
15/11Masses of -Odd Scalars
16/11Masses of -Even Scalars
17/11Vacuum Expectation Values
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E. Lundstrom et al., PRD79, 035013 (2009)
Constraint on Inert Doublet Scalar DM
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: The most interesting decay because of
Good for BG reduction by imposing
Negligible
No
No
Hopeful Probe of at the LHC :
(See also, S. Kanemura and K. Yagyu, PRD85, 115009 )
20/11Hopeful Probe of at the LHC :
with
Negligible contribution from
For example, Negligible
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c.f. usual HTM for the case of
Additional leptons likely to exist.
Hopeful Probe of at the LHC :
