Probe of TeV Scale Left Right Symmetric Seesaw Model - PowerPoint Presentation

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Probe of TeV Scale Left Right Symmetric Seesaw Model at the LHC for Photon Initiated Processes(in collaboration with Prof. K. S. Babu)Particle Physics on the Plains​,University of Kansas30th Sept, 2017

Sudip JanaOklahoma State University, USA

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ReferencesThis talk is based on :K. S. Babu and Sudip Jana, arXiv : 17xx.xxxxxK. S. Babu and Sudip Jana

, Phys.Rev

.

D 95

(2017) no.5, 055020

9/29/2017

SUDIP JANA

2

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Outline9/29/2017SUDIP JANA 3

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Neutrino Mass New physics beyond SM:

⌫

4

⌫

Slide5

Small Neutrino masses5“ Technically natural ” in t’Hooft sense. Small values are

protected by symmetry. At

a

cut-off

scale Λ :“ natural

” -

𝛅

m

f

~

g

2

/(16

𝛑

2

)

m

f

ln(

Λ

2

/m

f

2

)

“

unnatural

”

- 𝛅

mH2 ~ - yt2

/(8𝛑2

) Λ2

Two ways to

generate small values naturally

:

Suppression by integrating

out heavy states :

the higher

dimension 1/Λn

, the lower

Λ can

be.

Suppression

by loop radiative

generation:the

higher loops 1/(16𝛑2

)n,

the lower cut

off scale

can be.

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9/29/2017SUDIP JANA 6Neutrino Mass Models

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7/29

Higher-loop models with DM

Krauss-Nasri-Trodden model

Aoki-

Kanemura

-

Seto

model

Gustafsson-No-Rivera model

M. Gustafsson, J.M. No, and M.A. Rivera,

PRL

110

, 21802 (2013)

M. Aoki, S. Kanemura and O. Seto,

PRL

102

, 051805 (2009)

M.L. Krauss, S. Nasri and M. Trodden,

PRD

67

, 085002 (2003)

Many models of

Which is the true one ?

SM

R. 1 loop

R.

2

loop

Seesaw I

Seesaw I

Seesaw

II

III

R. 3

loop

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8/29

Higher-loop models with DM

Krauss-Nasri-Trodden model

Aoki-

Kanemura

-

Seto

model

Gustafsson-No-Rivera model

M. Gustafsson, J.M. No, and M.A. Rivera,

PRL

110

, 21802 (2013)

M. Aoki, S. Kanemura and O. Seto,

PRL

102

, 051805 (2009)

M.L. Krauss, S. Nasri and M. Trodden,

PRD

67

, 085002 (2003)

Can we test / falsify these models at the LHC ?

Can we explore the new Physics Scale M ?

SM

R. 1 loop

R.

2

loop

Seesaw I

Seesaw I

Seesaw

II

III

R. 3

loop

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Why Left Right Symmetry ?9/29/2017SUDIP JANA 9

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9/29/2017SUDIP JANA 10SM Gauge Symmetry :

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Left-Right symmetry9/29/2017SUDIP JANA 11

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Why Left Right Symmetry ?Understanding the origin of the parity violation.Generates small neutrino mass via seesaw mechanism.These models place quarks and leptons on the same footing in the weak interactions.The gauge group is very simple extension of the SM gauge group. Provide a simple formula for the electric charge.9/29/2017SUDIP JANA 12Pati, Jogesh C. et al. Phys.Rev. D10 (1974) 275-289,

Pati, Jogesh C. et al. Phys.Rev. D10 (1974) 275-289,

Mohapatra

, Rabindra N. et al. Phys.Rev. D11 (1975)

566-571Senjanovic

, G. et al.

Phys.Rev

. D12 (1975)

1502

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Particle Spectrum of MLRSM9/29/2017SUDIP JANA 13

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Particle Spectrum of MLRSM9/29/2017SUDIP JANA 14

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Conspicuous Signatures for MLRSM 9/29/2017SUDIP JANA 15

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Mass Limits on Heavy Gauge Bosons9/29/201716Lindner, Manfred et al. Phys.Lett. B762 (2016)  arXiv:1707.06958

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MLRSM Higgs PotentialAdding one extra soft breaking term, the most general renormalizable scalar potential is given by :9/29/2017SUDIP JANA 17Mohapatra, Rabindra N. et al. Phys.Rev. D23 (1981) 165Gunion, J.F. et al. Phys.Rev. D40 (1989)

1546Deshpande, N.G. et al. Phys.Rev. D44 (1991) 837-858

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Physical Higgs States and Mass Spectrum9/29/2017SUDIP JANA 18

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Physical Higgs States and Mass Spectrum9/29/2017SUDIP JANA 19Mohapatra, Rabindra N. et al. JHEP 1605 (2016) 174

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Physical Higgs States and Mass Spectrum9/29/2017SUDIP JANA 20

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9/29/2017SUDIP JANA 21Higgs Mass and Couplings

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9/29/2017SUDIP JANA 22Higgs Mass and Couplings

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9/30/2017SUDIP JANA 23H30 Production at the LHCDev, P. S. Bhupal et al. JHEP 1605 (2016) 174 Huitu

, K. et al. Nucl.Phys. B487 (1997)

27-42

Dutta, Bhaskar et al. Phys.Rev. D90 (2014)

055015Bambhaniya, G. et al. Phys.Rev. D92 (2015) no.1, 015016

Babu

, K.S. et al.

Phys.Rev

. D88 (2013)

055006

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24Gluon vs Photon Production Schmidt, Carl et al. Phys.Rev. D93 (2016) no.11

~

1

~

10 TeV

Again Charge Factor ~ (4+4+1+1)

2

Loss in the

parton

luminosity is compensated by cubic coupling and charge factor enhancement ….

g

g

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25Gluon vs Photon Production~ 1~

10 TeVAgain Charge Factor ~ (4+4+1+1)

2

Loss in the

parton luminosity is compensated by cubic coupling and charge factor enhancement ….

g

g

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9/29/2017SUDIP JANA 26H30 Production at the LHC through photon initiated processes NNPDF Collaboration (Ball, Richard D. et al.) JHEP 1504 (2015) 040

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9/29/2017SUDIP JANA 27H30 Production at the LHC through photon initiated processes NNPDF Collaboration (Ball, Richard D. et al.) JHEP 1504 (2015) 040

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Region 1 : 9/29/2017SUDIP JANA 28Decay modes of H30 :0

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Region 2 : 9/29/2017SUDIP JANA 29Decay modes of H30 :

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Potential discovery signals of H30 at LHC : 9/29/2017SUDIP JANA 30

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Present Status of Doubly Charged Higgs9/29/2017SUDIP JANA 31ATLAS-CONF-2017-053

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Present Status of Doubly Charged Higgs9/29/2017SUDIP JANA 32CMS-PAS-HIG-16-036

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H30 as four lepton resonance at LHC: 9/29/2017SUDIP JANA 33000

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H30 as four lepton resonance at LHC:9/29/2017SUDIP JANA 34

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H30 as four lepton resonance at LHC:9/29/2017SUDIP JANA 35

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H30 as di-photon resonance at LHC: 9/29/2017SUDIP JANA 36

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Discovery Reach of H30 at LHC: 9/29/2017SUDIP JANA 37

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Discovery Reach of H30 at LHC: 9/29/2017SUDIP JANA 380

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Charge Breaking Minima :9/29/2017SUDIP JANA 390( Preliminary Result )

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Charge Breaking Minima :9/29/2017SUDIP JANA 400( Preliminary Result )

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SummaryNeutrino physics is rich!Neutrinos remain to be most mysterious!Seesaw models are attractive, but where is the new physics scale?𝛬 ~ 1013 GeV

> 100

GeV

> keV ?Only if we

determined this, could

we make

fundamental progress

in

underlying

theory!

Can

we

observe

the

new

physics

associated

with

the

neutrino

mass

at

colliders

?

YES!

Must

we

see

the

new

physics effects ? NO.

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9/29/2017SUDIP JANA 42Conclusion

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9/29/2017SUDIP JANA 43

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9/29/2017SUDIP JANA 44Neutrino Mass Generation

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Seesaw Models

A natural theoretical way to understand why 3

-masses are very small

.

Type-III:

SM

+

3

triplet fermions

(

Foot, Lew, He, Joshi 89)

Type-I:

SM

+

3

right-handed

Majorana



’s

(

Minkowski

77;

Yanagida

79; Glashow 79; Gell-Mann,

Ramond

,

Slanski

79;

Mohapatra

,

Senjanovic

79)

Type-II:

SM

+

1

Higgs triplet

(

Magg

,

Wetterich

80; Schechter, Valle 80;

Lazarides

et al 80;

Mohapatra

,

Senjanovic

80;

Gelmini

,

Roncadelli

80)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 46K. S. Babu and Sudip Jana( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 47K. S. Babu and Sudip Jana( Phys.Rev. D95 (2017) no.5, 055020)

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Decay Modes of Doubly Charged Higgs9/29/2017SUDIP JANA 48Melfo, Alejandra et al. Phys.Rev. D85 (2012) 055018

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 49K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 50K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 51ATLAS-CONF-2016-051K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 52K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 53K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 54K. S. Babu et al.( Phys.Rev. D95 (2017) no.5, 055020)

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 55

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 56

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 57

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 58

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 59

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Future Goals :9/29/2017SUDIP JANA 60Maiezza, Alessio et al. Phys.Rev.Lett. 115 (2015) 081802

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SummaryIt is of fundamental importance to t

est

t

h

e Majo

ra

n

a

n

a

t

u

re

o

f

ν

’

s

.

Type

I

See-saw:

τ

,

K,

D,

B

rare

decays

sensitive

to

140

MeV

< m

4 < 5 GeV,

10−9 <

|V

ℓ4|2 <

10−2

;• LHC

sensitive: 10

GeV <

m4

< 400

GeV, 10

−6 <

|Vµ

4|2

<

10−2

.

Difficulty! May be

helped with

the “inverse seesaw”

mechanism.

Type

II See-saw:

for a scalar triplet

Φ±±

LHC

sensitive: M

φ ∼ 600

−

1000 GeV (ℓ

±ℓ

± or

W

±W

±).

Distinguish

Normal/Inverted Hierarchy;

Probe Majorana

phases.

With

W

′±

→

N ℓ

±, reach

M

N <

M

W ′

∼

4

−

5 TeV.

61

Type

III

See-saw:

for a lepton

triplet T

±,

T

0

LHC

sensitive: M

T ∼

800 GeV.

Also distinguish

Normal/Inverted Hierarchy.Radiative

seesaw : rich

physics in extended Higgs sector.

I

f

lucky, hadron

colliders may

serve

as the

discovery machine

for Majorana

nature of

ν’s.

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9/29/2017SUDIP JANA 62Back up Slides :

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9/29/2017SUDIP JANA 63

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9/29/2017SUDIP JANA 64

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9/29/2017SUDIP JANA 65

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9/29/2017SUDIP JANA 66

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Neutrino Mass Generation in the Model

EWSB induces a VEV on the CP

-even

neutral

component of the quadrupletThis

leads to d=7 neutrino

mass at tree

level –

Slide68

HoweverThis model does not prevent loop-level

d = 5 mass generation

Bambhaniya,

Chakrabortty,

Goswami, Konar, arXiv:1305.2795

Slide69

d=7 v d=5 Mass Generation

1

0.1

20

0

400

1000

2000

3000

4000

5000

6000

60

0

80

0

1000

M

A

[

GeV

]

M

<

[

Ge

V

]

m

Ν

loop

/

m

Ν

tree

M

<

=

0.5

TeV

M

<

=

1

TeV

M

<

=

5

TeV

500

2000

0

.10

0

.05

1

.00

0

.50

1

0

.00

5.00

100

0

1500

M

A

[

GeV

]

m

Ν

l

oo

p

/

m

Ν

t

ree

This

model

does

not

prevent

loop-level

d

=

5

mass

generation

m

l

o

op

ν

tree

/

m

ν

∼

1

upto

M

∆

≈

500

GeV

for

M

Σ

∼

5

TeV

Regardless

of

neutrino

mass

origin,

Higgs sector

offers

reach

phenomenology

We choose

M

Σ

=

5

TeV

=

⇒

Integrate

out

M

Σ

=

⇒

computationally

less

expensive

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9/29/2017SUDIP JANA 70

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9/29/2017SUDIP JANA 71

Slide72

72/29

The standard model (SM)

Two possible neutrino masses

Neutrino oscillation

Massless

Non-zero masses

Dirac mass :

Majorana

mass

:

：

Neutrino mass

Specific to neutrinos

(introduce )

(Lepton # violation)

(

　　　　　 　　　　　　　

)

Unnaturally small

We take this in this talk

Slide73

Small Neutrino masses73One would need to introduce:--- new states of heavy mass M--- new weak couplings, mixings k, Vij , etc.

Their values may be subject

to

some

expt. constraints, but wide open in theory space.

From phenomenological/experimental

point of

view: It is to

explore

the

new scale

M

!

Will

search

EVERY

WHERE

Without

theory

prejudice:

Explore

the

high-energy

regime,

including

LHC

&

other

collider

sensitivity.

Slide74

La =. νa .laL, a = 1, 2, 3∗S. Weinberg, Phys. Rev. Lett. 1566 (1979)

The

S

ee-saw spirit:

†

ν

If

m

ν

∼

1

eV,

then

Λ

∼

y

2

(10

14

GeV).

Λ

⇒

.

10

14

GeV

for

y

ν

∼

1;

100 GeV for yν ∼

10−6.

†Yanagita (1979); Gell-Mann, Ramond,

Slansky (1979), Minkowski

(1976);S.L. Glashow (1980); Mohapatra, Senjanovic (1980)

...

The leading SM gauge invariant

operator is at dim-5:

∗

1

Λ

(

yνLH)(

yνLH) +

h.c.

y2

v2

Λ

R

ν c

⇒ ν

L

v .

T

hese a

re th

e “m

ost

want

ed”

proc

esses

to

Discover Majorana

neutrinosAccess

the new mass scale

Probe

the lepton

flavor structure yν

∼ Uℓ

m

f

1

f

2

W



W



f

1

2

l



i

j

l



’

f

’



(A).

The

Models

74

(Michelle

Dolinski’s

lectures)

Slide75

Left-Right symmetry• Aesthetics9/29/2017SUDIP JANA 75

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Left-Right symmetry•Aesthetics•9/29/2017SUDIP JANA 76

Slide77

Left-Right symmetry• Aesthetics• Origin of P parity violation naturally explained9/29/2017SUDIP JANA 77

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Doubly Charged Higgs Phenomenology9/29/2017SUDIP JANA 78

Slide79

Model9/29/201779We focus on the model proposed by – Babu, Nandi and Tavartkiladze, Phys. Rev.D 80, 071702 (2009)

Particle content of

the

model :

One Y

=

3, SU

(2)-quadruplet

scalar;

and

two

SU

(2)-triplet

vector like

leptons

with

Y

=

2,

and

-2

K. Ghosh, Sudip Jana and S. Nandi,

arXiv

: 1705.01121

Slide80

Higgs Sector of the Model9/29/201780K. Ghosh, Sudip Jana and S. Nandi, arXiv : 1705.01121 The Higgs sector contains exotic doubly and triply-charged Higgs Striking SS2l or SS3l signatures at the LHC from ∆±± and ∆±±± decay

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Higgs Sector Phenomenology9/29/201781K. Ghosh, Sudip Jana and S. Nandi, arXiv : 1705.01121

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Higgs Sector Phenomenology9/29/201782K. Ghosh, Sudip Jana and S. Nandi, arXiv : 1705.01121

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H30 as di-Higgs resonance at LHC: 9/29/2017SUDIP JANA 83

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H30 as di-Higgs resonance at LHC: 9/29/2017SUDIP JANA 84