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

Alexander Vadimovich Bednyakov () and Şükrü Hanif Tanyıldızı ()
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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

International Journal of Modern Physics C (IJMPC), 2015, vol. 26, issue 04, 1-15

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.

Keywords: Penguin; BSM; the SM; FCNC; Wilson coefficients; effective Hamiltonian; 11.25.Hf; 123.1K (search for similar items in EconPapers)
Date: 2015
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DOI: 10.1142/S0129183115500424

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