Abstract
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 <μ<mb 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.
| Original language | English |
|---|---|
| Pages (from-to) | 302-338 |
| Number of pages | 37 |
| Journal | Nuclear Physics B |
| Volume | 680 |
| Issue number | 1-3 |
| DOIs | |
| Publication status | Published - 2004 Mar 1 |
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ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Non-leptonic B decays into two light mesons in soft-collinear effective theory. / Chay, Junegone; Kim, Chul.
In: Nuclear Physics B, Vol. 680, No. 1-3, 01.03.2004, p. 302-338.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Non-leptonic B decays into two light mesons in soft-collinear effective theory
AU - Chay, Junegone
AU - Kim, Chul
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.
UR - http://www.scopus.com/inward/record.url?scp=0742320149&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0742320149&partnerID=8YFLogxK
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 -