Vidana, Isaac, Bashkanov, Mikhail orcid.org/0000-0001-9822-9433, Watts, Dan orcid.org/0000-0003-4758-9599 et al. (1 more author) (2018) The d*(2380) in neutron stars - a new degree of freedom? Physics Letters B. pp. 112-116. ISSN 0370-2693
Abstract
Elucidating the appropriate microscopic degrees of freedom within neutron stars remains an open question which impacts nuclear physics, particle physics and astrophysics. The recent discovery of the first non-trivial dibaryon, the d∗(2380), provides a new candidate for an exotic degree of freedom in the nuclear equation of state at high matter densities. In this paper a first calculation of the role of the d∗(2380) in neutron stars is performed, based on a relativistic mean field description of the nucleonic degrees of freedom supplemented by a free boson gas of d∗(2380). The calculations indicate that the d∗(2380) would appear at densities around three times normal nuclear matter saturation density, influencing the upper mass limit for a stable neutron star and the neutron and proton fractions. New possibilities for neutron star cooling mechanisms arising from the d∗(2380)are also predicted.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018, The Author(s). |
Keywords: | EoS,Hexaquarks,Neutron stars |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/P003885/1 SCIENCE AND TECHNOLOGY FACILITIES COUNCIL (STFC) ST/M006433/1 |
Depositing User: | Pure (York) |
Date Deposited: | 20 Mar 2018 17:00 |
Last Modified: | 21 Jan 2025 17:31 |
Published Version: | https://doi.org/10.1016/j.physletb.2018.03.052 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1016/j.physletb.2018.03.052 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:128777 |
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