1/17 hiroaki sugiyama (univ. of toyama, japan) contents introduction our model - extended htm - lhc...
DESCRIPTION
2/17 Neutrino masses are very different from other fermion masses. neutrino-specific mechanism to generate their masses ? Neutrino-specific mass term Majorana mass : (possible only for ) Only the SM Higgs boson has vev. Extra Higgs bosons have vev. etc. to be compensated by scalar fields etc. IntroductionTRANSCRIPT
1/17
Hiroaki SUGIYAMA(Univ. of Toyama, Japan)
Contents Introduction
Our Model - extended HTM - LHC Phenomenology Summary
Higgs Triplet ModelMotivations
based on ‘S. Kanemura, HS, arXiv:1202.5231’
2/17
Neutrino masses are very different from other fermion masses.
neutrino-specific mechanism to generate their masses ?
Neutrino-specific mass term
Majorana mass :(possible only for )
Only the SM Higgs boson has vev.
Extra Higgs bosons have vev.
etc.
to be compensatedby scalar fields
etc.
Introduction
3/17
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)
4/17Higgs potential
no NG-boson for
: spontaneous breaking of
: explicit breaking of (“Majoron”)
Yukawa interaction with a complex Higgs triplet
Majorana mass matrix
5/17
Small option seems charming
Light new particles (ex. )
Sizable new coupling constants (ex. )
production at LHC
sizable LFV
We want to suppress
Motivations
なるほど
6/17
We want to supply the dark matter to the HTMほう
7/17
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
8/17
Hiroaki SUGIYAMA(Univ. of Toyama, Japan)
Contents Introduction
Our Model - extended HTM - LHC Phenomenology Summary
Higgs Triplet ModelMotivations
based on ‘S. Kanemura, HS, arXiv:1202.5231’
9/17Our Model
Suppression of parameter
by conservation at the tree level
Only scalar sectorSM
HTM
: forbidden
: allowed
: at the loop level
is extended.
broken by
おっ
S. Kanemura, HS, arXiv:1202.5231
10/17Our Model
is DM candidate
odd particles
Only scalar sectorSM
HTMis extended.
ほほぅ
11/171-loop generation of parameter by utilizing DM candidate
(Dark matter candidates)contribute to the loop
-odd particles
“ オリゼー ダイアグラム”
なかまだー
12/17Estimation 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
おっ
いいじゃん
13/17
Hiroaki SUGIYAMA(Univ. of Toyama, Japan)
Contents Introduction
Our Model - extended HTM - LHC Phenomenology Summary
Higgs Triplet ModelMotivations
based on ‘S. Kanemura, HS, arXiv:1202.5231’
14/17
: 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 )
やるなーわー
15/17Hopeful Probe of at the LHC :
with
Negligible contribution from
For example, Negligible
かもすか
わーとりあえず
16/17
c.f. usual HTM for the case of
Additional leptons likely to exist.
Hopeful Probe of at the LHC :
まかせろ
わー
かもすぞー
17/17Summary
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”
(not small) would be probedat the LHC
with
18/17
Backup
19/17
Yukawa interaction with a complex Higgs triplet
Higgs Triplet Model
Higgs potential
20/17Scalar Potential
21/17Masses of -Odd Scalars
22/17Masses of -Even Scalars
23/17
E. Lundstrom et al., PRD79, 035013 (2009)
Constraint on Inert Doublet Scalar DM