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A Mathematica package for calculation of one-loop penguins in FCNC processes

Author

Listed:
  • Alexander Vadimovich Bednyakov

    (Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia)

  • Şükrü Hanif Tanyıldızı

    (Bogoliubov Laboratory of Theoretical Physics, Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia)

Abstract

In this work, we present a Mathematica package Peng4BSM@LO which calculates the contributions to the Wilson Coefficients of certain effective operators originating from the one-loop penguin Feynman diagrams. Both vector and scalar external legs are considered. The key feature of our package is the ability to find the corresponding expressions in almost any New Physics model which extends the SM and has no flavor changing neutral current (FCNC) transitions at the tree level.

Suggested Citation

  • Alexander Vadimovich Bednyakov & Şükrü Hanif Tanyıldızı, 2015. "A Mathematica package for calculation of one-loop penguins in FCNC processes," International Journal of Modern Physics C (IJMPC), World Scientific Publishing Co. Pte. Ltd., vol. 26(04), pages 1-15.
    • Handle: RePEc:wsi:ijmpcx:v:26:y:2015:i:04:n:s0129183115500424
    DOI: 10.1142/S0129183115500424
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