Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays

Details Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays

1993-07-14

arxiv.org/abs/hep-ph/9307274v1

Z.Phys. C61 (1994) 67-82

Physics

High Energy Physics

High Energy Physics - Phenomenology

33 pages + 1 page figures (large ps-file, included as uu-file), LaTeX, DESY 93-083

Scientific paper

10.1007/BF01641888

We study the application of the classical equations of motion (EOM) within the framework of an effective low-energy Lagrangian treated at the loop level. Gauge-fixing and ghost terms, which enter naturally in the EOM, are found to lead to no physical effects --- neither through operator mixing nor in matrix elements. Beyond first order in the effective interactions, contact terms have to be included when reducing the effective Lagrangian and we present an explicit procedure to construct them. Applied to (hadronic) rare B-decays, the EOM drastically simplify the effective Lagrangian and its matching to the underlying theory, and certain cancellations of large (logarithmic) contributions become more transparent. Finally, we discuss details of the `matching' of the effective Lagrangian, which may be helpful in incorporating short distance QCD corrections in further phenomenological studies.

Affiliated with

Also associated with

No associations

Rating

Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Equations of Motion for Effective Lagrangians and Penguins in Rare B-Decays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-292852