CP VIOLATION at B-factories A.Bondar (Budker INP,Novosibirsk) Measurements of large CPV in bc c s modes Search for New Physics: CPV in bs penguin modes Measurement of CPV in B+ – See also Today A.Mihalyi “Recent results on the CKM angle α from BABAR” New method of the measurement in BD 0 K based on Dalitz plot analysis of the three body D 0 K S + – decay See also Today M. Legendre “ Status and prospects for the measurement of angle γ ” T. Gershon “Measurement of φ 3 using B– to DK– with D to K s π+π–” DANE04 Frascati June 7, 2004
CP VIOLATION at B-factories. A.Bondar (Budker INP,Novosibirsk). Measurements of large CPV in b c c s modes Search for New Physics: CPV in bs penguin modes Measurement of CPV in B p + p – See also Today A.Mihalyi “ Recent results on the CKM angle α from BABAR ” - PowerPoint PPT Presentation
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CP VIOLATION at B-factoriesA.Bondar (Budker INP,Novosibirsk)
Measurements of large CPV in bc c s modes
Search for New Physics: CPV in bs penguin modes
Measurement of CPV in B+–
See also Today A.Mihalyi “Recent results on the CKM angle α from BABAR”
New method of the measurement in BD0K based on Dalitz plot analysis of the three body D0KS+–decay
See also Today M. Legendre “Status and prospects for the measurement of angle γ ”
T. Gershon “Measurement of φ3 using B– to DK– with D to Ks π+π–”
DANE04 Frascati June 7, 2004
Coupling strength at decay vertex : gFVij
universal Fermi weak coupling : gF
Vij : quark-mixing matrix elements
CKM matrix : unitarity : Vji*Vjk=ik explicit parametrization (Wolfenstein) complex phase leads to different bu and td amplit
udes for quarks and anti-quarks.
V Vud Vus Vub
Vcd Vcs Vcb
Vtd Vts Vtb
1 2 2 3A i 1 2 2 2A
3A 1 i 2A 1
(4 )
CP0.2235±0.0033 A 0.81±0.08 |i| 0.36±0.09 |i| 0.79±0.19
The Weak Decays of Quarks
quark decay
gFVijij
W
quark decay
gFVij*i
j
W
DANE04 Frascati June 7, 2004
The Unitarity Triangle
Using orthogonality relation
* *ub ud tb td* *cb cd c
* * *ub ud cb cd tb td
b cd
V V V V
V V V V
V V V V V Vi k :=1, = + + =0
+ 1
3
+ = 0
B0 B0
B0 D(*)B+ DK
B0 J/Ks
B0 Ks
B0 D(*)D(*)
*ub ud*cb cd
V V
V V
*tb td*cb cd
V V
V V
DANE04 Frascati June 7, 2004
CKM CP phenomenology
CP violation arises from the interference of two amplitudes with different phases.