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

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 33

IntroductionIntroduction

Marcello A. Giorgi (ICHEP2004)Marcello A. Giorgi (ICHEP2004)Y. Sakai (ICHEP2004)Y. Sakai (ICHEP2004)

C.S. Kim C.S. Kim

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 44

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 55

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 66

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 77

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 88

( , )

*

*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( ) ( )

( )

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 99

What are C,P,T and their What are C,P,T and their Violation?Violation?

C. S. Kim

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1010

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1111

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1212

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1313

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1414

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1515

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1616

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1717

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1818

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)

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 1919

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2020

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2121

[ ]B Mesons

[ ]B Mesons

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2222

[1] CP Violation through Mixing

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2323

[2]

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2424

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2525

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2626

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

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2727

(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)

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2828

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 2929

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3030

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3131

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3232

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3333

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3434

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3535

020T

020T

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3636

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3737

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3838

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 3939

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4040

[3]

[3]

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4141

One B Decay CP EigenstateOther B Decay Tag FlavorMeasure Both Decay Vertex

J/KS, ’KSKS

Red Hot !2001

Mixing Induced Direct CP Violation

Belle

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4242

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4343

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4444

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4545

| |ubV

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4646

March 10, 2005March 10, 2005 B&CP at KNUB&CP at KNU 4747

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