Astrophysical Axion Bounds: The 2024 Edition

Raffelt, G.; Caputo, A.

doi:10.22323/1.454.0041

Proceedings of 1st General Meeting and 1st Training School of the COST Action COSMIC WSIPers — PoS(COSMICWISPers) 2024

DOI: 10.22323/1.454.0041

|View full text |Cite

Astrophysical Axion Bounds: The 2024 Edition

G. Raffelt,

A. Caputo

Abstract: We review the current status of astrophysical bounds on QCD axions, primarily based on the observational effects of nonstandard energy losses on stars, including black-hole superradiance. Over the past few years, many of the traditional arguments have been reexamined both theoretically and using modern data and new ideas have been put forth. This compact review updates similar Lecture Notes written by one of us in 2006 [Lect. Notes Phys. 741 (2008.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 19 publications

References 415 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Final state rescattering effects in axio-hadronic η and η′ decays

Alves,

Gonzàlez-Solís

2024

J. High Energ. Phys.

View full text Add to dashboard Cite

It has been long-understood that final state rescattering effects provide $$ \mathcal{O} $$ O (1) corrections to hadronic meson decays rates, such as η → πππ and η′ → ηππ. Hence, one would expect that such effects would be just as important in axio-hadronic η and η′ decays, such as η(′) → ππa, where a is an axion or axion-like particle (ALP). And indeed they are, as we show in this paper by using the treatment of dispersion relations to include the effects of strong final state interactions in several axio-hadronic processes, namely, η(′) → π0π0a, η(′) → π+π−a, and η′ → ηπ0a. We also compute the perturbative, leading order decay rates for multiple ALP emission, such as in η(′) → π0aa, η′ → ηaa and η(′) → aaa, and briefly discuss the expected corrections from strong interactions and the processes that must be considered for an accurate rate estimation of these multi-ALP decay channels.

show abstract

Final state rescattering effects in axio-hadronic η and η′ decays

Alves,

Gonzàlez-Solís

2024

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

Model-independent search for pair production of new bosons decaying into muons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

Hayrapetyan,

Tumasyan,

Adam

et al. 2024

J. High Energ. Phys.

View full text Add to dashboard Cite

The results of a model-independent search for the pair production of new bosons within a mass range of 0.21 < m < 60 GeV, are presented. This study utilizes events with a four-muon final state. We use two data sets, comprising 41.5 fb−1 and 59.7 fb−1 of proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV, recorded in 2017 and 2018 by the CMS experiment at the CERN LHC. The study of the 2018 data set includes a search for displaced signatures of a new boson within the proper decay length range of 0 < cτ < 100 mm. Our results are combined with a previous CMS result, based on 35.9 fb−1 of proton-proton collisions at $$ \sqrt{s} $$ s = 13 TeV collected in 2016. No significant deviation from the expected background is observed. Results are presented in terms of a model-independent upper limit on the product of cross section, branching fraction, and acceptance. The findings are interpreted across various benchmark models, such as an axion-like particle model, a vector portal model, the next-to-minimal supersymmetric standard model, and a dark supersymmetric scenario, including those predicting a non-negligible proper decay length of the new boson. In all considered scenarios, substantial portions of the parameter space are excluded, expanding upon prior results.

show abstract

A comprehensive calculation of the Primakoff process and the solar axion flux

Wu,

2024

J. Cosmol. Astropart. Phys.

View full text Add to dashboard Cite

The Primakoff process plays a crucial role in axion production in astrophysical environments and laboratories. Given the rising interest in axion physics and many on-going experimental activities, we conduct a comprehensive calculation of this process and carefully examine several aspects that have been neglected in the literature. In particular, our calculation is valid for axions with significantly large masses, which would be of importance to axion searches utilizing crystal and liquid xenon detectors. We present the most updated calculation of the Primakoff solar axion flux, with a simple parametrization that is applicable to a broad range of axion masses up to a few tens of keV. Our code is publicly available at GitHub.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Astrophysical Axion Bounds: The 2024 Edition

Cited by 19 publications

References 415 publications

Final state rescattering effects in axio-hadronic η and η′ decays

Final state rescattering effects in axio-hadronic η and η′ decays

Model-independent search for pair production of new bosons decaying into muons in proton-proton collisions at $$ \sqrt{s} $$ = 13 TeV

A comprehensive calculation of the Primakoff process and the solar axion flux

Contact Info

Product

Resources

About