2024/01/02 by Alessandro Lella, Pierluca Carenza, G. Co’ +4 · 1 voice · 3 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies
paper · pdf · doi:10.1103/physrevd.109.023001
openalex publication_date 2024/01/02 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
Axionlike particles (ALPs) coupled to nucleons might be copiously emitted from a supernova (SN) core. We extend existing bounds on free-streaming ALPs to the case in which these are so strongly interacting with the nuclear matter to be trapped in the SN core. For strongly interacting ALPs, we also extend the bound from the absence of an ALP-induced signal in Kamiokande-II neutrino detector at the time of SN 1987A. We find that combining the different arguments, SNe exclude values of ALP-nucleon coupling <a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:mrow><a:msub><a:mrow><a:mi>g</a:mi></a:mrow><a:mrow><a:mi>a</a:mi><a:mi>N</a:mi></a:mrow></a:msub><a:mo>≳</a:mo><a:msup><a:mrow><a:mn>10</a:mn></a:mrow><a:mrow><a:mo>−</a:mo><a:mn>9</a:mn></a:mrow></a:msup></a:mrow></a:math> for ALP masses <c:math xmlns:c="http://www.w3.org/1998/Math/MathML" display="inline"><c:msub><c:mi>m</c:mi><c:mi>a</c:mi></c:msub><c:mo>≲</c:mo><c:mn>1</c:mn><c:mtext> </c:mtext><c:mtext> </c:mtext><c:mi>MeV</c:mi></c:math>. Remarkably, in the case of canonical QCD axion models, the SN bounds exclude all values of <e:math xmlns:e="http://www.w3.org/1998/Math/MathML" display="inline"><e:msub><e:mi>m</e:mi><e:mi>a</e:mi></e:msub><e:mo>≳</e:mo><e:msup><e:mn>10</e:mn><e:mrow><e:mo>−</e:mo><e:mn>2</e:mn></e:mrow></e:msup><e:mtext> </e:mtext><e:mtext> </e:mtext><e:mi>eV</e:mi></e:math>. This result prevents the possibility for current and future cosmological surveys to detect any signatures due to hot dark matter QCD axion mass. Published by the American Physical Society 2024