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Updated: Sep 4, 2025
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Spatial Separation of Molecular Conformers and Clusters
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Constraining Heavy Axionlike Particles by Energy Deposition in Globular Cluster Stars.
Giuseppe Lucente1,2, Oscar Straniero3,4, Pierluca Carenza5
1Dipartimento Interateneo di Fisica "Michelangelo Merlin," Via Amendola 173, 70126 Bari, Italy.
Physical Review Letters
|July 16, 2022
Summary
We constrained heavy axionlike particles (ALPs) using Globular Cluster stars. This study probes the "cosmological triangle" parameter space for ALPs, offering new astrophysical insights.
Area of Science:
- * Astrophysics
- * Particle Physics
Background:
- * Axionlike particles (ALPs) coupled to photons can be produced in stellar plasmas.
- * Previous constraints on ALPs in the
Purpose of the Study:
- * To constrain heavy axionlike particles (ALPs) using stellar evolution simulations.
- * To probe the ALP parameter space known as the
Main Methods:
- * Developed a new
Main Results:
- * Constrained ALPs with masses up to ~0.4 MeV and coupling g_aγ ~ 10^-5 GeV^-1.
- * Successfully simulated Globular Cluster stars including ALP energy transfer.
Conclusions:
- * Astrophysical observations of Globular Clusters provide novel constraints on ALPs.
- * This method probes a region of the ALP parameter space not easily accessible through standard cosmological arguments.
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