CP VIOLATION AND ΔI=1/2 ENHANCEMENT FOR K→ππ, K→ππγ WEAK DECAYS
نویسندگان
چکیده
منابع مشابه
Weak Hamiltonian , CP Violation and Rare Decays ∗
These lectures describe in detail the effective Hamiltonians for weak decays of mesons constructed by means of the operator product expansion and the renormalization group method. We calculate Wilson coeffcients of local operators, discuss mixing of operators under renormalization, the anomalous dimensions of operators and anomalous dimension matrices. We elaborate on the renormalzation scheme ...
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Abstract Data indicate that ∆I=3/2 transitions account for 4.5–4.7% of both CP conserving and CP violating K→2π decays, as well as CP conserving radiative K→ππγ processes. Observed K → ππγ/ππ branching ratios are shown to scale near α/π or α/2π. The KL-KS mixing angle φ and the semileptonic weak-rate asymmetry δ are reviewed, and shown to be consistent with data. Also, K→ 2π ∆I =1/2 dominance i...
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ژورنال
عنوان ژورنال: Modern Physics Letters A
سال: 2004
ISSN: 0217-7323,1793-6632
DOI: 10.1142/s0217732304015567