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Direct CP Violation from Decays. January 10, 2005. “ Seminar at Kyungpook National University ”. C. S. Kim ( 김충선 , 金忠善 ) Yonsei University, Seoul, Korea. Contents. 1. Introduction 2. What are C,P,T and their Violation? 3. 3 Ways for CP Violations from B Decays - PowerPoint PPT Presentation
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March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 11
Direct CP Violation fromDirect CP Violation from Decays Decays
January 10, 2005January 10, 2005
C. S. Kim ( 김충선 , 金忠善 ) Yonsei University, Seoul, Korea
“Seminar at Kyungpook National University”
B K
March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 22
ContentsContents 1. Introduction1. Introduction 2. What are C,P,T and their Violation?2. What are C,P,T and their Violation? 3. 3 Ways for CP Violations from B Decays 3. 3 Ways for CP Violations from B Decays 4. (14. (1stst) Direct CP Violation from BaBar, Belle) Direct CP Violation from BaBar, Belle 5. Conclusions5. Conclusions
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IntroductionIntroduction
Marcello A. Giorgi (ICHEP2004)Marcello A. Giorgi (ICHEP2004)Y. Sakai (ICHEP2004)Y. Sakai (ICHEP2004)
C.S. Kim C.S. Kim
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( , )
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*ud ub
ucd cb
V VV V
132
*
*td tb
tcd cb
V VV V
(1,0)
SLAC notation(In honor of Bjorken)
1 3( ) ( )
( )
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What are C,P,T and their What are C,P,T and their Violation?Violation?
C. S. Kim
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3 Ways for CP Violation 3 Ways for CP Violation from B Decaysfrom B Decays
Marcello A. Giorgi (ICHEP2004)Marcello A. Giorgi (ICHEP2004)F. Bianchi (ICHEP2004)F. Bianchi (ICHEP2004)
Rainer Stamen (ICHEP2004)Rainer Stamen (ICHEP2004)A. I. Sanda (FPCP2004)A. I. Sanda (FPCP2004)
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[ ]B Mesons
[ ]B Mesons
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[1] CP Violation through Mixing
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[2]
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CommentsComments
1. Are showing new physics?1. Are showing new physics? 2. Or only hadronic uncertainties?2. Or only hadronic uncertainties?
3. Is large EW-penguin of NP correct?3. Is large EW-penguin of NP correct? (see Buras et al, and Yoshikawa.)(see Buras et al, and Yoshikawa.) 4. How about large instead of large4. How about large instead of large EW-penguin ?EW-penguin ? 5. Strong phase ? 5. Strong phase ?
| / |cr C P
| / |EW EWr P P
isospin diagram
0CP CPA A
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(1(1stst) Direct CP Violation ) Direct CP Violation from BaBar, Bellefrom BaBar, Belle
C. S. Kim (w/ Sechul Oh, Chaehyun Yu)C. S. Kim (w/ Sechul Oh, Chaehyun Yu)C.S. Kim (w/ Darwin Chang, H. Hatanaka)C.S. Kim (w/ Darwin Chang, H. Hatanaka)
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020T
020T
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[3]
[3]
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One B Decay CP EigenstateOther B Decay Tag FlavorMeasure Both Decay Vertex
J/KS, ’KSKS
Red Hot !2001
Mixing Induced Direct CP Violation
Belle
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| |ubV
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ConclusionsConclusions
1. Is source of CPV only CKM phase?1. Is source of CPV only CKM phase? 2. , i.e. SM predicted value?2. , i.e. SM predicted value? 3. Is CKM unitary?3. Is CKM unitary? 4. Low energy B-physics will show new 4. Low energy B-physics will show new physics of high energy? Which processes?physics of high energy? Which processes? 5. Do we fully understand semi-leptonic and5. Do we fully understand semi-leptonic and non-leptonic decay processes?non-leptonic decay processes? 6. We got more questions than answers….6. We got more questions than answers….
/J CKM
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