Prospects for New Physics in
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Transcript of Prospects for New Physics in
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Prospects for New Physicsin
November 19, 2004
b ⇄ s Phenomena and the Squark
ICHEP 2004, Beijing 22
b sqq Penguin CPVb sqq Penguin CPVBelle @LP03 (140 fb-1)
“sin21”= 0.96 0.51
B0 Ks
sin21=0.728 0.06
B0 J/Ks etc
3.5 deviation from the SM !
--
[PRL 91, 261602 (2003)]
Different !!
ICHEP 2004, Beijing 33
B0 K0 : CPV ResultB0 K0 : CPV Result
K0
KS + KL
: S (K0) = +0.06 0.33 0.09
A (K0) = +0.08 0.22 0.09 ~2.2 away from SM
KS + KL
: S (K0) = +0.06 0.33 0.09
A (K0) = +0.08 0.22 0.09 ~2.2 away from SM
Good tags
Poor tags
S = 0.736fit Good tags
274M BB
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 4
Chua, WSH, Nagashima, PRL’04 submitted 9/03
N.B. SKs < 0 Is/Was Extreme
VP, PP Anticorrelation
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 5
Two Nicer, Gentler ScenariosPost 2004
ICHEP04-August 20, 2004 Marcello A. Giorgi 6
Results on sin2 from s-penguin modes
2.7 from s-penguin to sin2(cc)
2.4 from s-penguin to sin2(cc)
All new!All new!
~ 0.3 – 0.4~ 0.3 – 0.4
Scenario 1
ICHEP04-August 20, 2004 Marcello A. Giorgi 7
Results on sin2 from s-penguin modes
2.7 from s-penguin to sin2(cc)
2.4 from s-penguin to sin2(cc)
All new!All new!
~ 0.45 ~ 0.45 ~ 0.7 – 0.8 eventually (?)~ 0.7 – 0.8 eventually (?)
Scenario 2
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 8
Focus onFocus on200 GeV200 GeV
110
110
001~
~
22
mM
RRq
Level Splitting by Large sR-bR Mixing Drive One State Light
1 CP Phase
strange-beauty squarkstrange-beauty squark
(Approx. Abelian Flavor Symm.)
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 9
NP CPV phase ~ 90 90°° oror 270 270°°
~ 200 GeV
~ 500 GeVColliderDirect Search
Two ScenariosTwo Scenariosbut need to disentangle hadronic effect
Two Particle System
Clean Modes@ Flavor Factory
Model Upshot
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“Milder” 2004 results more interesting !
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 10
Survive b s Rate Constraint
≲ ≲ /2, /2, oror ≳≳ 33/2/2
gm~[ [ 7700 - 800 GeV More Conservative ]00 - 800 GeV More Conservative ]
gmm ~ ,~ 1, 0.5 TeV2, 0.5
1, 0.8 TeV2, 0.8
: LR Chiral Enhancement
1, 0.65 TeV2, 0.65
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 11
B Ks Rate ?
: LR Chiral Enhancement
Amp ~ f (a + b )12c f, a, b: hadronic param.
f a gives SM part
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 12
Amplitudes
V ∓ A
Reason why Opposite Trend in SSKKss vs vs SS’K’Ks s , SSKKss
hadronichadronicuncertaintyuncertainty
Right-handed interactions
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 13
• Scenario 1: Scenario 1: ~~ /2/2 SSKKss ~ 0.45 accommodating gluino massgluino mass ~ 650 – 900 GeV
[Prefer to keep gluino mass above 500 GeV (L.E. Constraints)
• Scenario 2: Scenario 2: SS’K’Ks s ~ 0.3 - 0.4 gluino massgluino mass ~ 650 – 800 GeV
The Two Scenarios
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 14
Clean Measure: mmBBss ,, sin2 sin2BBss Interesting!Interesting!
gmm ~ ,~ 1, 0.5 TeV1, 0.5 TeV2, 0.52, 0.5
1, 0.8 1, 0.8 2, 0.82, 0.8
1, 0.5 1, 0.5 2, 0.52, 0.5
• Scenario 1Scenario 1: : ~~ /2/2 SSKKss ~ 0.45 gluino massgluino mass ~ 650 – 900 GeV
- mmBBs s ~ 25 - 90~ 25 - 90 psps-1-1
- sin2sin2BBs s ~~ +1+1• Scenario 2Scenario 2: : SS’K’Ks s ~ 0.3 - 0.4 gluino massgluino mass ~ 650 – 800 GeV - mmBBs s ~ 50 - 100~ 50 - 100 psps-1-1
- sin2sin2BBs s ~~ ―1―1N.B. sin2sin2BBss
not discriminating
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 15
b b ss L L in SM• Strength of Mixing-dep. CPV
Test RR component ((AAtwood, twood, GGronau, ronau, SSoni, 1997oni, 1997))
• SSKK**00((KKss))nownow PromisinPromisingg
• Scenario 1Scenario 1: : ~~ /2/2 SSKKss~ 0 ~ 0 ((―0.1 - +0.2―0.1 - +0.2)) Not Easy.Not Easy.
• Scenario 2Scenario 2: : SSKKss~ ~ ―0.4 - ― 0.7―0.4 - ― 0.7 Much Easier !Much Easier !
3rd Measure: Wrong Helicity Photon inWrong Helicity Photon in b b ss RR
)2sin()|||(|
||211112
112
11
11110
dBM cc
ccS
Free of hadronic uncertaintyFree of hadronic uncertainty
SSKKssbetter than sin2sin2BBss
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 16
NP CPV phase ~ 90 90°° oror 270 270°°
~ 200 - 500 GeV
~ 650 - 900 GeVColliderDirect Search
Two ScenariosTwo Scenariosbut need to disentangle hadronic effect
Two Particle System 3 Parameters
Clean Modes@ Flavor Factory
Model [assume maximal mixing]
TeV Scale SUSY
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 17
Standard b squark limit diluted by
dual s-b flavor of
Collider Direct Search
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Detection
• Basically, just a light “b”-squark in Production so, Discovery not a problem.
• Question is Decay: bino LSP or gravitino
• Can be Stable? (LSP)
In principle Heavy MIPs
Anyway, need Good b-tagging ! [s-tagging?]
sin2 is b fraction
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standard sbeauty
reference 1
• Discovery (> 10 evts) up to 300 GeV w/ 2 fb−1 & sin2m>0.5
• Single vs double b-tag contain info on sinm
• b-tag cross section: check consistency vs mass
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 20
Comment onComment onK* Polarization Polarization
PuzzlePuzzle
refer to Hsiang-nan’s talk
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 21
Heuristic/Drastic ModelOn-shell b s g: g is Transverse
b s ~ 3 x 10−4 b s g ~ few x 10−3
B K* ~ 4 x 10−5 B KT* T~ 5 x 10−6
10% 0.1% ?
ComplicatedColor Structure
min.is “gg”
b
x
x
Simple StringFragmentation Resonances
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 22
Ansatz
ad hoc term
Really, | 〉 component of |K*〉
GGqs
Soft
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 23
• Strong disagreement in +K*0 rate• If BaBar value, then +K*0 can be fed from K*+ via Rescattering
11/19/2004, Mini-Flavor George W.S. Hou (NTU) 24
Conclusion SSKKss , SSKKss, SS’K’Ks s Data May StillMay Still Call for - Large s-bs-b Mixing, w/ New CPV Phase & R.-h.R.-h. Interaction
A Light Flavor-mixedFlavor-mixed Squark? Independtly Well Motivated (Flavor & SUSY) • Survive b s (!) • Can Account for SSKKs s ≲ ≲ S SKKss, xor SSKKss,, SS’K’Ks s ≲ ≲ S SKKss
• mmBBss , sin2sin2BBss now Quite Measurable and Interesting
• SSKKss Promising, Clean; better CPV measure than Promising, Clean; better CPV measure than sin2sin2BBss
K* Polarization Puzzle Polarization Puzzle may call for Drastic Remed
y Search at Tevatron (maybe at LHC) Profitable