TY - JOUR
T1 - Non-leptonic B decays into two light mesons in soft-collinear effective theory
AU - Chay, Junegone
AU - Kim, Chul
N1 - Funding Information:
This work was supported by Korea Research Foundation Grant (KRF-2002-041-C00052).
PY - 2004/3/1
Y1 - 2004/3/1
N2 - We consider non-leptonic B decays into two light mesons at leading order in soft-collinear effective theory, and show that the decay amplitudes are factorized at next-to-leading order in αs. The operators for non-leptonic B decays in the full theory are first matched to the operators in SCETI, which is the effective theory appropriate for mbΛ <μb with Λ∼0.5 GeV. We evolve the operators and the relevant time-ordered products in SCETI to SCETII, which is appropriate for μ< mbΛ. Using the gauge-invariant operators in SCETII, we compute non-leptonic B decays in SCET, including the non-factorizable spectator contributions and spectator contributions to the heavy-to-light form factor. As an application, we present the decay amplitudes for B̄→ππ in soft-collinear effective theory.
AB - We consider non-leptonic B decays into two light mesons at leading order in soft-collinear effective theory, and show that the decay amplitudes are factorized at next-to-leading order in αs. The operators for non-leptonic B decays in the full theory are first matched to the operators in SCETI, which is the effective theory appropriate for mbΛ <μb with Λ∼0.5 GeV. We evolve the operators and the relevant time-ordered products in SCETI to SCETII, which is appropriate for μ< mbΛ. Using the gauge-invariant operators in SCETII, we compute non-leptonic B decays in SCET, including the non-factorizable spectator contributions and spectator contributions to the heavy-to-light form factor. As an application, we present the decay amplitudes for B̄→ππ in soft-collinear effective theory.
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U2 - 10.1016/j.nuclphysb.2003.12.027
DO - 10.1016/j.nuclphysb.2003.12.027
M3 - Article
AN - SCOPUS:0742320149
VL - 680
SP - 302
EP - 338
JO - Nuclear Physics B
JF - Nuclear Physics B
SN - 0550-3213
IS - 1-3
ER -