Flavor violating

Flavor violating ๐‘โ€ฒ
in ๐‘†๐‘‚(10) SUSY GUT
ๆ‘ๆพ ็ฅ๏ผˆๅๅคๅฑ‹ๅคงๅญฆ๏ผ‰
@Flavor Physics Workshop 2014
ๅ…ฑๅŒ็ ”็ฉถ่€…๏ผšๅคงๆ‘ ้›„ๅธ๏ผˆๅๅคๅฑ‹ๅคงๅญฆ๏ผ‰
ไน…้‡Ž ็ด”ๆฒป๏ผˆๅๅคๅฑ‹ๅคงๅญฆใ€Kavli IPMU๏ผ‰
ๅฑฑไธญ ็œŸไบบ๏ผˆๅๅคๅฑ‹ๅคงๅญฆ๏ผ‰
ใฏใ˜ใ‚ใซ๏ผGUTใฃใฆ็ด ๆ™ดใ‚‰ใ—ใ„
ๆจ™ๆบ–ๆจกๅž‹
gauge theory
3ใคใฎๅŠ›๏ผ3ใคใฎgauge group
็ฒ’ๅญ๏ผgauge groupใฎ่กจ็พ
ๅคง็ตฑไธ€็†่ซ–๏ผˆGUT๏ผ‰
1ใคใฎgauge groupใงๅŠ›๏ผˆ็›ธไบ’ไฝœ็”จ๏ผ‰ใ‚’่จ˜่ฟฐ
๏ผๅŠ›ใฎ็ตฑไธ€ใ€ๅŒๆ™‚ใซ็ฒ’ๅญใฎ็ตฑไธ€
ๆœฌๅฝ“ใซ็ตฑไธ€ใงใใ‚‹ใฎ๏ผŸ
01/19
ๅŠ ใˆใฆ๏ผSUSYใ‚‚็ด ๆ™ดใ‚‰ใ—ใ„
boson
fermion
็‰ฉ่ณช
squark, slepton
quark, lepton
gauge
gluon, W, B
gauge boson
gluino, wino, bino
gaugino
Higgs
Higgs
่ฆ‹ใคใ‹ใฃใฆใ„ใชใ„ใƒปใƒปใƒป
โ€ข SUSY flavorใฎๆœช่ฆณๆธฌ
โ€ข ้‡ใ„Higgs
Higgsino
gauginoใ•ใˆ่ณช้‡TeVใชใ‚‰
motivationใ‚ใ‚Š
squark, sleptonใฏ
้‡ใ„๏ผŸ
02/19
gauge coupling unification
๐šฒ๐‘บ๐‘ผ๐‘บ๐’€ ๐‘ฎ๐‘ผ๐‘ป
๐‘š๐‘†๐‘ˆ๐‘†๐‘Œ = 1 TeV
03/19
concept of this model
ไธ€่ˆฌใซ๐‘โ€ฒ gauge boson from
โ€ข ๐‘ˆ(1)โ€ฒ by hand
tree level flavor violation
โ€ข ๐‘ˆ(1)โ€ฒ included in GUT group
no flavor violation
ไปŠๅ›ž
GUTใฎๅ•้กŒ่งฃๆฑบmechanism
โ†’flavor violating ๐‘โ€ฒ gauge boson
๐‘†๐‘‚(10) GUT
+
high scale, split SUSY
flavor physicsใŒ
modelใฎprobe
04/19
โ€ฒ
๐’
gauge boson (๐‘ผ ๐Ÿ
โ€ฒ )ใจใฏ
GUT group, large extra dimensionใชใฉใ‹ใ‚‰ๅ‡บใ‚‹
ๆง˜ใ€…ใชmotivation
โ€ข ๐œ‡ term problemใฎ่งฃ
โ€ข DM candidate (singlet extension)
โ€ข electroweak baryogenesis (singlet
extension)
ใชใฉ
05/19
tree level flavor violation
through ๐’โ€ฒ exchange
โ€ข ๆ‰‹ใงๅ…ฅใ‚ŒใŸ๐‘ˆ(1)โ€ฒ gauge symmetry
anomaly cancelใฎใŸใ‚ไธ–ไปฃใ”ใจใซ็•ฐใชใ‚‹charge
โ€ข GUT gauge symmetry groupใซๅซใพใ‚Œใ‚‹๐‘ˆ(1)โ€ฒ
anomalyๅ•้กŒใŒใชใ„ใŸใ‚ไธ–ไปฃuniversal charge 06/19
๐‘บ๐‘ถ(๐Ÿ๐ŸŽ) GUT modelใฎๅ•้กŒ็‚น
โ€ข quark, (lepton)-mixing
โ€ข ่ฑŠๅฏŒใชflavorใ”ใจใฎ้šŽๅฑคๆง‹้€  ใŒๅ‡บใชใ„
่งฃๆฑบmechanism
โ€ข matter sectorๆ‹กๅผต
โ€ข Higgs sectorๆ‹กๅผต
ไปŠๅ›žใฏใ“ใกใ‚‰
ใชใฉ
07/19
๐‘บ๐‘ถ(๐Ÿ๐ŸŽ) GUT model + ๐Ÿ๐ŸŽ matter
ไพ‹ใˆใฐ
tree level FVใŒ็”Ÿใ˜ใ‚‹
ๆณจ ๆญฃ็ขบใซใฏ
FVใซ็‰นๅพดใŒใ‚ใ‚‹
08/19
๐‘บ๐‘ถ(๐Ÿ๐ŸŽ) SUSY GUT model
๐‘†๐‘‚(10) symmetryไธญใฎไธ€้ƒจใฎsymmetryใ‚’ไฟใค
high scale (split) SUSY
๐‘‚(100) TeV SUSY breaking
โ€ข ๐‘‚(100) TeV ๐‘€๐‘โ€ฒ
โ€ข SUSYใ‹ใ‚‰ใฎFV contributionใชใ—
โ€ข gaugino mass โˆผ ๐‘‚(1) TeVใชใ‚‰gauge coupling unification
โ€ข tan ๐›ฝใŒๅฐใ•ใ„
09/19
Giudice,
Strumia
(2012)
10/19
concept of this model ๏ผˆ็นฐใ‚Š่ฟ”ใ—๏ผ‰
ไธ€่ˆฌใซ๐‘โ€ฒ gauge boson from
โ€ข ๐‘ˆ(1)โ€ฒ by hand
tree level flavor violation
โ€ข ๐‘ˆ(1)โ€ฒ included in GUT group
no flavor violation
ไปŠๅ›ž
GUTใฎๅ•้กŒ่งฃๆฑบmechanism
โ†’flavor violating ๐‘โ€ฒ gauge boson
๐‘†๐‘‚(10) GUT
+
high scale, split SUSY
flavor physicsใŒ
modelใฎprobe
11/19
FV่จˆ็ฎ—ใฎใŸใ‚ใฎparameter
โ€ข ๐Ÿ“่กจ็พๆททๅˆ่กŒๅˆ—๏ผš๐‘ˆ
โ€ข flavor mixing matrix๏ผšV
โ€ข ๐‘ˆ(1)โ€ฒ gauge coupling๏ผš๐‘”๐‘โ€ฒ
โ€ข ๐‘ˆ(1)โ€ฒ gauge boson mass๏ผš๐‘€๐‘โ€ฒ
ใจใ‚Šใ‚ใˆใšไปŠๅ›žใฏ๐‘€๐‘โ€ฒ = 100 TeV
12/19
parameterใฎๆฑบๅฎš
ไปŠๅ›žใฏ
ใจใ—ใŸ
charged lepton sectorใฏ๐‘†๐‘ˆ(5) limitใง
13/19
FV coupling
๐œ“
A๐‘–๐‘— ใฎๅฎš็พฉ
1 2
โˆ’1 = โˆ’ โˆ’
3 3
14/19
๐‘
๐‘‘๐‘…
๐ด11
๐‘’
๐‘
๐‘‘๐‘…
๐ด22
๐ด11๐ฟ
๐‘’
๐ด23๐ฟ
๐‘
๐‘‘๐‘…
๐ด33
๐‘
๐‘‘๐‘…
๐ด๐‘–๐‘—
๐‘’
๐ด๐‘–๐‘—๐ฟ
๐‘
๐‘‘๐‘…
๐ด13
๐‘’๐ฟ
๐ด13
๐‘’
๐ด12๐ฟ
๐‘’
๐ด33๐ฟ
๐‘’
๐ด22๐ฟ
๐‘
๐‘‘๐‘…
๐ด12
๐‘
๐‘‘๐‘…
๐ด23
๐œ€
๐œ€
15/19
๐‘€๐‘โ€ฒ = 100 TeV
16/19
๐‘€๐‘โ€ฒ = 100 TeV
17/19
case 1
case 2
18/19
ใพใจใ‚
โ€ข flavor physicsใ‚’probeใจใ™ใ‚‹SUSY GUT model
โ€ข GUT modelใฎๆŒใคๅ•้กŒ่งฃๆฑบใŒflavor violationใ‚’ๅผ•
ใ่ตทใ“ใ™
โ€ข ็”Ÿใ˜ใ‚‹flavor violationใซ็‰นๅพดใ‚ใ‚Š
to do
โ€ข ็พ่ฑกใฎ่งฃๆžใ‚’้€ฒใ‚ใ‚‹
โ€ข SUSY sectorใฎๆจกๅž‹ใฎ่ฉณ็ดฐ
19/19
ใ”้™่ดใ‚ใ‚ŠใŒใจใ†ใ”ใ–ใ„ใพใ™ใ€‚
Back up
neutrino mass โ€“ inverse seesaw
seesaw mechanism in GUT model
ๆˆๅŠŸใฏGUT scaleใŒ1016 GeVใจใ—ใฆใ„ใ‚‹ใ“ใจใ‹ใ‚‰
ไปŠๅ›žใฏ
GUT symmetryใฎไธ€ใคใŒ็ ดใ‚Œใ‚‹scale
ใ„ใ‚ใ‚†ใ‚‹type-โ…  seesawใฏๅƒใ‹ใชใ„
inverse seesaw
Mohapatra (1986)
ๅ…ƒใ€…
ใ‚ˆใ‚Š
ใ“ใ‚Œใ‚’ๆ‹กๅผตใ™ใ‚‹
ii. Realistic quark and lepton masses and mixings
๐‘ˆ๐ถ๐พ๐‘€
0.97
0.23 0.0035
= 0.23
0.97
0.041 ,
0.0086 0.040
1.0
0.83
0.54 0.15
U๐‘€๐‘๐‘† = โˆ’0.48 0.53 0.70
0.30 โˆ’0.65 0.70
CKM matrix and MNS matrix PDG (2012)
complex phase of MNS matrix is 0.
Quark and charged lepton mass @ ๐‘š๐‘ Antusch, Maurer (2013)
Neutrino mass PDG (2012)
Neutrino mass is upper bound of neutrino mass Riemer-Sorensen et al. (2012)
mass
๐‘€๐‘ข
๐‘€๐‘‘ , ๐‘€๐‘’
๐‘€๐œˆ
strong
middle hierarchy
weak
mixing
๐‘ˆ๐ถ๐พ๐‘€
small mixing
๐‘ˆ๐‘€๐‘๐‘†
large mixing
Realistic quark and lepton masses and mixings in ๐‘บ๐‘ผ ๐Ÿ“ GUT model
โ€™
๐‘€๐‘ข
๐‘€๐‘‘ , ๐‘€๐‘’
seesaw
mechanism
๐‘€๐œˆ
The ๐Ÿ๐ŸŽ quark and lepton induces stronger hierarchies for
Yukawa coupling than the ๐Ÿ“ quark and lepton.
๐Ÿ๐ŸŽ๐Ÿ
๐Ÿ๐ŸŽ๐Ÿ
๐Ÿ๐ŸŽ๐Ÿ‘
๐œ†3
๐œ†2
1
๐Ÿ“๐Ÿ
๐Ÿ“๐Ÿ
๐Ÿ“๐Ÿ‘
๐œ†3
๐œ†2.5
๐œ†2
Quark and lepton masses and mixings can be realized if ๐œ† = 0.22.
โ€™
๐‘€๐‘ข
๐‘€๐‘‘ , ๐‘€๐‘’
๐‘€๐œˆ
strong hierarchy
๐ฟ๐‘ข โˆผ ๐‘…๐‘ข โˆผ ๐‘ˆ๐ถ๐พ๐‘€โˆ’๐‘ก๐‘ฆ๐‘๐‘’
middle hierarchy
๐ฟ๐‘‘ โˆผ ๐‘…๐‘’ โˆผ ๐‘ˆ๐ถ๐พ๐‘€โˆ’๐‘ก๐‘ฆ๐‘๐‘’ , ๐‘…๐‘‘ โˆผ ๐ฟ๐‘’ โˆผ ๐‘ˆ๐‘€๐‘๐‘†โˆ’๐‘ก๐‘ฆ๐‘๐‘’
weak hierarchy
๐ฟ๐œˆ โˆผ ๐‘ˆ๐‘€๐‘๐‘†โˆ’๐‘ก๐‘ฆ๐‘๐‘’
๐‘ˆ๐ถ๐พ๐‘€โˆ’๐‘ก๐‘ฆ๐‘๐‘’
1
โˆผ ๐œ†
๐œ†3
๐œ†
1
๐œ†2
๐œ†3
๐œ†2
1
๐‘ˆ๐‘€๐‘๐‘†โˆ’๐‘ก๐‘ฆ๐‘๐‘’
1
โˆผ ๐œ†0.5
๐œ†
๐œ†0.5
1
๐œ†0.5
๐œ†
๐œ†0.5
1
๐‘ˆ๐ถ๐พ๐‘€โˆ’๐‘ก๐‘ฆ๐‘๐‘’
1
โˆผ ๐œ†
๐œ†3
๐œ†
1
๐œ†2
๐œ†3
๐œ†2
1
small mixing
๐‘ˆ๐‘€๐‘๐‘†โˆ’๐‘ก๐‘ฆ๐‘๐‘’
1
โˆผ ๐œ†0.5
๐œ†
as a result of above assumption,
๐œ†0.5
1
๐œ†0.5
๐œ†
๐œ†0.5
1
large mixing
diagonalizing matrix for ๐Ÿ๐ŸŽ of ๐‘†๐‘ˆ(5)
diagonalizing matrix for ๐Ÿ“ of ๐‘†๐‘ˆ(5)
Quark and lepton masses and mixings can be realized if ๐œ† = 0.22.
Realistic quark and lepton masses and mixings in ๐‘บ๐‘ถ ๐Ÿ๐ŸŽ GUT model
In ๐‘†๐‘‚(10) GUT model, ๐Ÿ๐ŸŽ and ๐Ÿ“ quark and lepton induce similar
hierarchy because of unification into ๐Ÿ๐Ÿ” rep.
It is hard to realize realistic quark and lepton masses and mixings.
๐‘Œ๐‘ข = ๐‘Œ๐‘‘ = ๐‘Œ๐‘’
add ๐Ÿ๐ŸŽ rep. as SM quarks and leptons
๐Ÿ๐Ÿ”๐๐Ÿ
๐Ÿ๐Ÿ”๐๐Ÿ
๐Ÿ๐Ÿ”๐๐Ÿ‘
๐œ†3
๐œ†2
1
hierarchy of ๐Ÿ๐Ÿ”
๐Ÿ๐ŸŽ rep.
hierarchy of ๐Ÿ๐ŸŽ
of ๐‘†๐‘ˆ 5
๐Ÿ๐ŸŽ๐๐Ÿ
๐Ÿ๐ŸŽ๐๐Ÿ
๐Ÿ๐ŸŽ๐๐Ÿ‘
realistic
hierarchy of ๐Ÿ“
of ๐‘†๐‘ˆ 5
๐Ÿ“ rep.
๐Ÿ“๐ ๐Ÿ
๐Ÿ“๐ ๐Ÿ
๐Ÿ“๐ ๐Ÿ‘
๐Ÿ“โ€ฒ๐‘ป
๐œ†3
๐œ†2
1
๐œ†2.5
add 5โ€ฒ from ๐Ÿ๐ŸŽ of ๐‘†๐‘‚(10)
massless ๐Ÿ“ of
๐‘†๐‘ˆ(5) (SM quarks
and leptons)
unrealistic
๐œ†3
๐œ†2
1
๐Ÿ“๐œ“1
๐Ÿ“โ€™ ๐‘‡
๐Ÿ“๐œ“2
๐œ†3
๐œ†2.5
๐œ†2
1
๐Ÿ“๐œ“3
large Yukawa = superheavy
๐Ÿ“๐œ“1
๐Ÿ“โ€™ ๐‘‡
๐Ÿ“๐œ“2
๐Ÿ“๐œ“3
โˆผ
๐œ†3
๐œ†2.5
๐œ†2
1
๐Ÿ“1
๐Ÿ“2
๐Ÿ“3
๐Ÿ“๐‘€
realistic