Abstract
We propose a new method to extract the CKM phase angle γ(≡ φ3) from the isospin analysis in B → Kπ decays only. Unlike previously proposed methods, we do not employ flavor SU(3) symmetry, so that this method is free from the hadronic uncertainty coming from the SU(3) breaking effect. Neither we adopt any Dalitz-plot analysis, which may involve multiple strong phases and large final state interactions. Since no theoretical assumption, except the isospin relations, is imposed on B → Kπ decays, this method will work well, regardless of possible new physics effects unless the isospin relations do not hold. Since the mixing induced CP asymmetry S KS π0 plays a crucial role in this method, more precise measurement on SKS π0 in future experiments will be greatly helpful to extract γ accurately. Using current experimental data for B → Kπ including SKS π0, we extract γ within 1σ: γ = 71-13°+0° or γ = 109-0°+57°.
| Original language | English |
|---|---|
| Pages (from-to) | 3300-3303 |
| Number of pages | 4 |
| Journal | International Journal of Modern Physics A |
| Volume | 23 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 2008 Aug 20 |
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All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics
- Nuclear and High Energy Physics
- Astronomy and Astrophysics
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Extracting the CKM phase angle γ(≡ φ3) from isospin analysis in B → Kπ decay. / Kim, Choong Sun; Oh, Sechul; Yoon, Yeo Woong.
In: International Journal of Modern Physics A, Vol. 23, No. 21, 20.08.2008, p. 3300-3303.Research output: Contribution to journal › Article
TY - JOUR
T1 - Extracting the CKM phase angle γ(≡ φ3) from isospin analysis in B → Kπ decay
AU - Kim, Choong Sun
AU - Oh, Sechul
AU - Yoon, Yeo Woong
PY - 2008/8/20
Y1 - 2008/8/20
N2 - We propose a new method to extract the CKM phase angle γ(≡ φ3) from the isospin analysis in B → Kπ decays only. Unlike previously proposed methods, we do not employ flavor SU(3) symmetry, so that this method is free from the hadronic uncertainty coming from the SU(3) breaking effect. Neither we adopt any Dalitz-plot analysis, which may involve multiple strong phases and large final state interactions. Since no theoretical assumption, except the isospin relations, is imposed on B → Kπ decays, this method will work well, regardless of possible new physics effects unless the isospin relations do not hold. Since the mixing induced CP asymmetry S KS π0 plays a crucial role in this method, more precise measurement on SKS π0 in future experiments will be greatly helpful to extract γ accurately. Using current experimental data for B → Kπ including SKS π0, we extract γ within 1σ: γ = 71-13°+0° or γ = 109-0°+57°.
AB - We propose a new method to extract the CKM phase angle γ(≡ φ3) from the isospin analysis in B → Kπ decays only. Unlike previously proposed methods, we do not employ flavor SU(3) symmetry, so that this method is free from the hadronic uncertainty coming from the SU(3) breaking effect. Neither we adopt any Dalitz-plot analysis, which may involve multiple strong phases and large final state interactions. Since no theoretical assumption, except the isospin relations, is imposed on B → Kπ decays, this method will work well, regardless of possible new physics effects unless the isospin relations do not hold. Since the mixing induced CP asymmetry S KS π0 plays a crucial role in this method, more precise measurement on SKS π0 in future experiments will be greatly helpful to extract γ accurately. Using current experimental data for B → Kπ including SKS π0, we extract γ within 1σ: γ = 71-13°+0° or γ = 109-0°+57°.
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U2 - 10.1142/S0217751X08042018
DO - 10.1142/S0217751X08042018
M3 - Article
VL - 23
SP - 3300
EP - 3303
JO - International Journal of Modern Physics A
JF - International Journal of Modern Physics A
SN - 0217-751X
IS - 21
ER -