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External Operators and Anomalous Dimensions in Soft-Collinear Effective Theory.

DE2004826517

Publication Date	2002
Personal Author	Becher, T.; Hill, R. J.; Lange, B. O.; Neubert, M.
Page Count	20
Abstract	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 needed for correctly describing the ultraviolet behavior of the effective theory.
Keywords	Collinear partons Soft patrons Dimensions Patrons Processes B mesons Hadrons Lagrangian function Quarks Weak interactions Formalism Calculation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.; Cornell Univ., Ithaca, NY. Newman Laboratory for Elementary-Particle
Supplemental Notes	Prepared in cooperation with Cornell Univ., Ithaca, NY. Newman Laboratory for Elementary-Particle Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510

External Operators and Anomalous Dimensions in Soft-Collinear Effective Theory.

External Operators and Anomalous Dimensions in Soft-Collinear Effective Theory.
DE2004826517

Publication Date	2002
Personal Author	Becher, T.; Hill, R. J.; Lange, B. O.; Neubert, M.
Page Count	20
Abstract	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 needed for correctly describing the ultraviolet behavior of the effective theory.
Keywords	Collinear partons Soft patrons Dimensions Patrons Processes B mesons Hadrons Lagrangian function Quarks Weak interactions Formalism Calculation
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Stanford Linear Accelerator Center, CA.; Department of Energy, Washington, DC.; Cornell Univ., Ithaca, NY. Newman Laboratory for Elementary-Particle
Supplemental Notes	Prepared in cooperation with Cornell Univ., Ithaca, NY. Newman Laboratory for Elementary-Particle Physics. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200510