Chirally enhanced corrections in the MSSM
Andreas Crivellin
TL;DR
This paper reviews the resummation of chirally-enhanced loop corrections in the MSSM, which can significantly affect Yukawa couplings and dominate over tree-level contributions due to chiral enhancement.
Contribution
It provides a comprehensive method for resumming chirally-enhanced corrections to all orders in the MSSM, based on recent collaborative research.
Findings
Resummation techniques improve accuracy of Yukawa coupling calculations.
Chirally-enhanced corrections can dominate over tree-level terms.
Method applicable to various loop-induced corrections in MSSM.
Abstract
In the general MSSM, chirally-enhanced corrections (to Yukawa couplings) are induced by gluino-squark, chargino-sfermion and neutralino-sfermion loops and can numerically compete with, or even dominate over, tree-level contributions, due to their chiral enhancement. In this article I review the resummation of these corrections to all orders in pertubation theory based on recent work done in collaboration with Lars Hofer and Janusz Rosiek (arXiv:1103.4272).
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Taxonomy
TopicsParticle physics theoretical and experimental studies · Physics of Superconductivity and Magnetism · Neutrino Physics Research