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Updated: May 29, 2026
13:42
Gold Nanoparticle Synthesis
Published on: July 10, 2021
Pseudo-Goldstino in field theory.
Riccardo Argurio1, Zohar Komargodski, Alberto Mariotti
1Physique Théorique et Mathématique and International Solvay Institutes, Université Libre de Bruxelles, Belgium.
Physical Review Letters
|September 10, 2011
Summary
We analyzed the pseudo-Goldstino, a light fermion arising from SUSY-breaking hidden sectors. Its mass, determined by radiative effects and a Goldberger-Treiman relation, is at least GeV scale, with collider and cosmology implications.
Area of Science:
- High Energy Physics
- Supersymmetry (SUSY) Breaking
- Particle Physics
Background:
- Hidden sectors in Supersymmetry (SUSY) breaking can decouple from visible particles.
- This decoupling is expected to produce light fermions: the Goldstino and pseudo-Goldstino.
- The Goldstino remains massless, while the pseudo-Goldstino gains mass through radiative effects.
Purpose of the Study:
- To analyze the radiative effects causing pseudo-Goldstino mass.
- To derive a universal nonperturbative formula for the pseudo-Goldstino mass.
- To investigate the implications of pseudo-Goldstino mass in gauge mediation models.
Main Methods:
- Analysis of radiative effects on fermion mass.
- Application of a modified Goldberger-Treiman relation for a nonperturbative mass formula.
- Detailed study within the framework of gauge mediation.
Main Results:
- The pseudo-Goldstino acquires a mass due to radiative effects.
- A universal nonperturbative formula for the pseudo-Goldstino mass was derived.
- In gauge mediation, the pseudo-Goldstino mass is at least GeV scale, potentially reaching electroweak scales even in low-scale models.
Conclusions:
- The pseudo-Goldstino mass has significant implications for low-energy physics.
- These findings open unconventional possibilities for collider physics.
- Potential applications in cosmology are also suggested by the pseudo-Goldstino mass.
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