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Supernova constraints on dark flavored sectors

Camalich, Jorge Martin; Terol-Calvo, Jorge; Tolos, Laura; Ziegler, Robert 1
1 Institut für Theoretische Teilchenphysik (TTP), Karlsruher Institut für Technologie (KIT)


Proto-neutron stars forming a few seconds after core-collapse supernovae are hot and dense environments where hyperons can be efficiently produced by weak processes. By making use of various state-of theartsupernova simulations combined with the proper extensions of the equations of state including Λ hyperons, we calculate the cooling of the star induced by the emission of dark particles X$^{0}$ through the decay Λ→nX$^{0}$. Comparing this novel energy-loss process to the neutrino cooling of SN 1987A allows us to set a stringentupper limit on the branching fraction, BR(Λ→nX$^{0}$)≤8×10$^{-9}$, that we apply to massless dark photons and axions with flavor-violating couplings to quarks. We find that the new supernova bound can be orders of magnitude stronger than other limits in dark-sector models.

Verlagsausgabe §
DOI: 10.5445/IR/1000134268
Veröffentlicht am 23.06.2021
DOI: 10.1103/PhysRevD.103.L121301
Zitationen: 12
Zitationen: 12
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 2470-0010, 0556-2821, 1089-4918, 1538-4500, 1550-2368, 1550-7998, 2470-0029
KITopen-ID: 1000134268
Erschienen in Physical Review D
Verlag American Physical Society (APS)
Band 103
Heft 12
Seiten Art.-Nr.: L121301
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