A Study of some methods for measuring CKM CP violating phases
Nov, 199529 pages
Published in:
- Z.Phys.C 74 (1997) 359-368
e-Print:
- hep-ph/9511462 [hep-ph]
Report number:
- OITS-593
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Abstract:
We study the influence of penguin (especially, electroweak penguin) effects on some methods of measuring the angles , , and in the CKM unitarity triangle. We use next-to-leading order effective Hamiltonian, and present numerical estimates based on the factorization approximation. We find that some techniques suggested in the literature, especially for determination, are not workable in light of the electroweak penguin effects. Nevertheless, there are methods that would work for each angle determination. For angle we consider mode and estimate the penguin contamination. For angle we consider a method based on SU(3) symmetry and carefully consider SU(3) breaking effects. We point out regions in the parameter space where this method could be used reliably.- CKM matrix: measurement
- CP: violation
- B: hadronic decay
- hadronic decay: B
- D: pair production
- pair production: D
- effective Hamiltonian
- effect: penguin
- electroweak interaction
- factorization
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