Hadronic EDMs in SUSY GUTs - PowerPoint PPT Presentation

Loading...

PPT – Hadronic EDMs in SUSY GUTs PowerPoint presentation | free to view - id: 16e235-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Hadronic EDMs in SUSY GUTs

Description:

... SUSY SU(5) GUTs with right-handed neutrinos, ... 'Hadronic EDM Constraints on Orbifold GUTs,' hep-ph/0505234. July 19, 2005 ... SUSY GUTs: Well motivated by gauge ... – PowerPoint PPT presentation

Number of Views:24
Avg rating:3.0/5.0
Slides: 30
Provided by: susy200
Category:
Tags: susy | edms | guts | hadronic

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Hadronic EDMs in SUSY GUTs


1
Hadronic EDMs in SUSY GUTs
Mitsuru Kakizaki (ICRR, Univ. of Tokyo)
July 19, 2005 _at_ IPPP
  • Refs.
  • J. Hisano, M. K., M. Nagai and Y. Shimizu,
    Hadronic EDMs in SUSY SU(5) GUTs with
    right-handed neutrinos, PLB 604, 216 (2004)
    hep-ph/0407169
  • J. Hisano, M. K. and M. Nagai, Hadronic EDM
    Constraints on Orbifold GUTs, hep-ph/0505234

We investigate hadronic EDMs induced by CP
violating squark mixings
2

1. Motivation
  • SUSY SM with soft breaking terms
  • Severe constraints on parameters
  • Detectable FCNC and CP violation
  • GUTs
  • Unification of quark and lepton flavor
  • SUSY GUTs Well motivated by gauge coupling
    unification
  • Unification of mass matrices of squarks and
    sleptons

By investigating correlations between hadronic
and leptonic observables, we can probe
structure of SUSY GUTs
Attention to K, B physics, LFV decays and EDMs
3
  • Hadronic EDM experiments severely constrain
    CP violating squark generation mixing in SUSY
    models

Constraint on CP asymmetry in B meson system
Hisano,Shimizu(2003,2004)
Purpose of this talk
  • Investigation of hadronic EDMs in SUSY GUT models
  • SUSY SU(5) GUT with right-handed neutrinos (with
    minimal SUGRA boundary condition)
  • Five-dimensional SU(5) orbifold GUT

4
Contents
  1. Motivation
  2. Constraints from hadronic EDMs
  3. Hadronic EDMs in SUSY SU(5) GUTs with
    right-handed neutrinos
  4. Hadronic EDM constraints on orbifold GUTs
  5. Summary

New
New
5
2. Constraints from hadronic EDMs
  • Electric dipole moments (EDMs) T-odd observables

KM phase does not induce detectable EDMs
EDMs are sensitive to physics beyond SM
  • CP violation at dimension five level

Quark CEDMs
Quark EDMs
  • Quark CEDM contributions to EDMs of neutron and
    199Hg atom

Hisano,Shimizu(2003,2004)
Current upper bounds
  • Quark EDM contributions to are comparable to
    those from

6
SUSY contributions to CEDMs
  • CP violating off-diagonal elements in squark
    mass matrices induce CEDMs

CEDMs are enhanced by heavier quark masses due
to chirality flip nature
Stringent constraints on products of LL and RR
mixings
7
3. Hadronic EDMs in SUSY SU(5) GUTs with
right-handed neutrinos
  • Neutrino mixings
  • CKM mixings

Left-handed sdown mixings
Left-handed slepton mixings
SU(5)
SU(5)
Right-handed slepton mixings
Right-handed sdown mixings
  • Both left- and right-handed sfermion mixings are
    induced Relative phases come from GUT CP
    phases

Hadronic and leptonic EDMs
8
CEDM in SUSY SU(5) GUT with right-handed
neutrinos
New
Strange quark CEDM
Down quark CEDM
Deutron EDM (Future)
Deutron EDM (Future)
Right-handed tau neutrino mass
  • Maximal CP phase,
  • Null result of neutron EDM experiments already
    constrains mass of right-handed tau neutrino
  • Future EDM experiment is sensitive to small
    region

9
Hadronic EDM vs other observables
  • LL mixings inevitably arise due to top
    Yukawa coupling and CKM mixings

Hadronic EDM experiments severely constrain
CP asym. in from RR sdown mixing
is suppressed
Hisano,Shimizu(2003,2004)
  • SU(5) GUT relation

Hisano,Shimizu(2003) Ciuchini,Masiero,Silvestrin
i,Vempati,Vives(2003)
  • Branching ratios for LFV tau decays
  • Muon EDM
  • c.f. Current upper bounds

10
4. Hadronic EDM constraints on orbifold GUTs
  • Boundary conditions in extra dimension

GUT, SUSY
Hall,Nomura, PRD66,075004(2002)
SM brane
SU(5) brane
SU(5) bulk
Spacetime
Gauge multiplets
Gauge multiplet Higgs mutiplets
Higgs doublets
in MSSM
  • Realization of light Higgs doublets and heavy
    Higgs triplets
  • Gauge coupling unification
  • Suppression of proton decay
  • Fermion mass hierarchy via volume suppression
  • Unification of bottom and tau mass
  • Soft SUSY terms only for bulk fields
    FCNC suppression

11
Sfermion mixings in orbifold GUT
  • Bulk fields are responsible for fermion mass
    hierarchy and SUSY parameters

Zero modes of
Zero modes of
Sfermion flavor mixings arise at tree level for
10-plets
Dangerous up quark CEDM and LFV from RR slepton
mixings
  • c.f. Minimal SUSY SU(5) GUT with mSUGRA boundary
    condition

Sfermion flavor mixings are loop-suppressed
for
12
Up quark CEDM and in orbifold GUT
New
Up quark CEDM
Branching ratio for
Neutron EDM
Hg EDM
MEG (Future)
Deutron EDM (Future)
  • Maximal CP phase,
  • Marginal CEDM of up quark is induced as well as
    LFV decays

13
5. Summary
  • EDMs depend on flavor violating mass parameters
    via internal lines
  • We can probe SUSY GUT models by investigating
    correlations between hadronic EDMs and
    other obervables
  • SU(5) SUSY GUTs with right-handed neutrinos
  • Orbifold GUTs

Marginal CEDM of up quark is induced as well as
LFV decays from RR slepton mixings
14
Backup slides
15
High energy SUSY breaking scenarios
  • Existanse of large top Yukawa coupling and CKM
    matrix

Sdown LL mixings inevitably arise due to RG
effects
EDM experiments constrain sdown RR mixings
practically
c.f.
Severe constraints on CP violating 1-3 and 2-3
mixings in sdown RR sector
16
Supersymmetric standard model and SUSY flavor
problem
Fermion boson
  • Supersymmetry (SUSY)

e.g. Quark
Squark
Hierarchy problem is solved
Gaugino
Gauge boson
  • Superparticles are not discovered

SUSY must be broken
(Soft) SUSY breaking terms are necessary
e.g. Soft sfermion mass terms
Generation
  • Arbitrary sfermion masses and mixings would
    induce unacceptably large FCNC processes (SUSY
    flavor problem)

Severe constraints e.g.
17
Branching ratios for LFV decays in SUSY SU(5)
GUT with right-handed neutrinos
Future
Future (MEG)
Right-handed tau neutrino mass
  • By investigating correlations between results of
    hadronic EDM and LFV searches, we can probe
    structure in SUSY GUT models

18
Loopholes
  • There are uncertainties of estimates of hadronic
    EDMs originated from hadronic physics
  • CP violating parameters may be extremely
    small in theory beyond the SM
  • Various CP violating contributions may be
    accidentally canceled out

19
SUSY GUTs with right-handed neutrinos
  • Three gauge coupling constants are unified at
    high energy scale in presence of superparticles
    with masses of order of

SUSY GUTs are inspired
  • Tiny neutrino masses

Seesaw mechanism is inspired
  • SUSY GUTs with right-handed neutrinos are very
    promising as theory beyond SM

20
Flavor structure
  • Quark and lepton superfields
  • Superpotential

Quark mixing (CKM) matrix
Lepton mixing (MNS) matrix
GUT phases (independent of CKM phase
21
199Hg atom EDM
  • CP violating interaction

T violating nuclear force
Interaction between nuclear and electron
Spin of nuclear
EDM of 199Hg atom
22
vs CP asymmetry for
Hisano, Shimizu(2003,2004)
  • Consider case when CP violation is originated
    only from

Neutron EDM bound suggest no deviation of CP
asymmetry for from SM prediction
From Hisano, Shimizu(2004)
  • Sizable deviation should come from

Endo, Mishima, Yamaguchi(2004)
23
Chromoelectric dipole moment (CEDM)
  • CEDM of quark is defined as

CP and T violation
  • EDMs of atoms and neutron are induced by
    CEDMs of light quarks

24
Estimates of hadronic EDMs
  • Neutron EDM

CP violation
HisanoShimizu(2003,2004)
  • EDM of Hg atom

T-violating nuclear force
mixing
HisanoShimizu(2003,2004)
25
Charged lepton flavor violation (LFV) in SUSY
seesaw model
  • Observation of neutrino oscillations

Lepton mixing matrix
Flavor changing right-handed neutrino Yukawa
coupling
  • Slepton generation mixings are induced by
    radiative corrections

Borzumati, Masiero(1986)
LFV
may be detected in foreseeable future
26
Constraints on squark flavor mixing
Hisano,Shimizu(2003,2004)
  • Current upper bounds from neutron and Hg EDM
    experiments

Constraints on CEDMs of quarks from neutron (Hg)
Constraints on squark flavor mixings from neutron
(Hg)
  • We assume no cancellation among various
    contributions

27
Flavor structure in orbifold GUT
  • in SUSY SM arise from different bulk
    multiplets

in SM are zero modes of
in SM are zero modes of
  • Yukawa couplings leading to up-type quark masses

SU(5) GUT in 4-dimensional viewpoint is not
manifest and thus is not symmetric
28
3. Hadronic EDMs in SUSY SU(5) GUTs with
right-handed neutrinos
  • SU(5)

GUT CP phases
SU(5)
Large neutrino Yukawa couplings induce sizable
generation mixings in right-handed sdown sector,
which are related to left-handed slepton mass
matrix
Moroi(2000)
29
Deutron EDM experiment
Semertzidis et al, hep-ex/0308063
  • Sensitivity
  • Candidates BNL, IUCF, KVI
About PowerShow.com