TY - JOUR
T1 - External operators and anomalous dimensions in soft-collinear effective theory
AU - Becher, T.
AU - Hill, R. J.
AU - Lange, B. O.
AU - Neubert, M.
PY - 2004/2/26
Y1 - 2004/2/26
N2 - It has recently been argued that soft-collinear effective theory for processes involving both soft and collinear partons contains a new soft-collinear mode, which can communicate between the soft and collinear sectors of the theory. The formalism incorporating the corresponding fields into the effective Lagrangian is extended to include external current and four-quark operators relevant to weak interactions. An explicit calculation of the anomalous dimensions of these operators reveals that soft-collinear modes are necessary to correctly extract the ultraviolet behavior of the effective theory.
AB - It has recently been argued that soft-collinear effective theory for processes involving both soft and collinear partons contains a new soft-collinear mode, which can communicate between the soft and collinear sectors of the theory. The formalism incorporating the corresponding fields into the effective Lagrangian is extended to include external current and four-quark operators relevant to weak interactions. An explicit calculation of the anomalous dimensions of these operators reveals that soft-collinear modes are necessary to correctly extract the ultraviolet behavior of the effective theory.
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U2 - 10.1103/PhysRevD.69.034013
DO - 10.1103/PhysRevD.69.034013
M3 - Article
AN - SCOPUS:1642337282
SN - 1550-7998
VL - 69
JO - Physical Review D - Particles, Fields, Gravitation and Cosmology
JF - Physical Review D - Particles, Fields, Gravitation and Cosmology
IS - 3
ER -