new physics scenarios in b hh
DESCRIPTION
New Physics Scenarios in B hh. April 20, 2005 2nd SuperB Workshop @ Hawaii. Intro: NP in EWP? PQCDF and A K p but A K p 0 ? Why 4th Generation? Results Summary. Observation of Direct CP Violation. A K p = - 0. 114 0.020. 5.7 s. d. p 0. _ d. - PowerPoint PPT PresentationTRANSCRIPT
April 20, 2005 SuperB Workshop in Hawaii
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New Physics Scenarios in B New Physics Scenarios in B hh hh
April 20, 20052nd SuperB Workshop @ Hawaii
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• Intro: NP in EWP? • PQCDF and AK but AK0 ?• Why 4th Generation?• Results• Summary
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5.7
Observation of Direct CP Violation
AK = 0.114 0.020
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B0 K
Large EW penguin (Z0) ?
New Physics ?
_d
d
Ku u
Bsb
AK0 = 0.049 0.040
3.6 fromK
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Buras @ CKM05
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Buras @ CKM05
Z’
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Fleischer @ CKM05
Parametrize EWP
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Fleischer @ CKM05
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Fleischer @ CKM05
Predictiona bit coarse
different signdifferent sign conventionconvention
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PQCDF and AK
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- 0.11 0.02 - 0.16 0.04 B0
0.04 0.04 - 0.10 0.08 B 0
0.02 0.14 - 0.02 - 0.04 B0 00
- 0.02 0.03 - 0.01 0.01 B 0
But
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Factorizable
NonFactorizable
Annihilation Phase
PQCDF
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Why 4th Generation?
Natural for impact on EWP.
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from unitarity
safe
measured
Phase
Set
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SM 4
SM 3
new unitarity condition
new penguin from t’
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Tree
QCD penguin
EW penguin SM4 naturally impact on EWP
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Results
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4th generation not excluded
favored
allowed
Excluded
Arhrib and WS
YanirHattori, Hasuike and Wakaizumi
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EWP
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“adjustable”
Cancellation btwnsb and 1
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Predictions
bb
bb
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Brought down for smaller sb
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PDG04New Avg.
Difficult evenat SuperB
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Summary
• Difference in AK0 and AK suggest Non-standard EWP• 4th Generation Carries Phase Naturally impact on EWP• With AK predicted by PQCDF account for AK0 ~ 0 if • Predictions - b sll on high side - mBs close to current bound w/ sin2Bs < 0 - Rc - Rn OK; AK 00 ~ 0.05 – 0.1, SK 00 ~ 0.4 – 0.5 - A CP in b s a fraction of SM value of 0.4%
~
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Backup
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Factorizable
NonFactorizable
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Effective Feynman Rules
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Adjustablility of
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Less shift for AK
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Rc - Rn basically OK
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Problem vs
The Case of FSI
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have similar behavior
FSI + 4TH generation
PEW leakage from to
and from to
No existence of a region of the parameter space
where the asymmetries fit the experimental data
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