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순수물리이론 연구단
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Axion emission from supernova with axion-pion-nucleon contact interaction

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Title
Axion emission from supernova with axion-pion-nucleon contact interaction
Author(s)
Kiwoon Choi; Hee Jung Kim; Hyeonseok Seong; Chang Sub Shin
Publication Date
2022-02
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2022, no.2
Publisher
SPRINGER
Abstract
Open Access ©The Authors. Article funded by SCOAP3 We examine the axion emission from supernovae with a complete set of relevant axion couplings including the axion-pion-nucleon contact interaction which was ignored in the previous studies. Two processes are affected by the axion-pion-nucleon contact interaction, pi(-) + p -> n + a and n + p -> n + p + a, and these processes can be the dominant source of axions for some region in the axion parameter space or in astrophysical conditions encountered inside supernovae. We find that the contact interaction can enhance the axion emissivity of pi(-) + p -> n + a by a factor of 2 - 4, while the effect on n + p -> n + p + a is not significant. We also discuss the relative importance of other pion-induced processes such as pi(0) + n -> n + a and pi(-) + pi(0) -> pi(-) + a.
URI
https://pr.ibs.re.kr/handle/8788114/11364
DOI
10.1007/JHEP02(2022)143
ISSN
1126-6708
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > 1. Journal Papers (저널논문)
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