FASER for Compressed Higgsinos
Physics#Particle Physics, Supersymmetry, LHC, FASER🔬 Research|Analyzed: Jan 3, 2026 15:35•
Published: Dec 30, 2025 17:34
•1 min read
•ArXivAnalysis
This paper explores the potential of the FASER experiment to detect compressed Higgsinos, a specific type of supersymmetric particle predicted by the MSSM. The focus is on scenarios where the mass difference between the neutralino and the lightest neutralino is very small, making them difficult to detect with standard LHC detectors. The paper argues that FASER, a far-forward detector at the LHC, can provide complementary coverage to existing search strategies, particularly in a region of parameter space that is otherwise challenging to probe.
Key Takeaways
- •FASER is proposed as a detector to search for long-lived neutralinos in the MSSM.
- •The paper focuses on the compressed Higgsino scenario where the mass splitting is very small.
- •FASER 2 is predicted to be able to probe a specific region of the parameter space that is not easily accessible by other LHC detectors.
- •The search is complementary to other Higgsino searches.
Reference / Citation
View Original"FASER 2 could cover the neutral Higgsino mass up to about 130 GeV with mass splitting between 4 to 30 MeV."