Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events
The best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale. We reconsider the expected mass function assuming a CMB-...
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| Format: | Article |
| Language: | English |
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SciPost
2023-07-01
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| Series: | SciPost Physics Proceedings |
| Online Access: | https://scipost.org/SciPostPhysProc.12.052 |
| _version_ | 1797787108778180608 |
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| author | Joaquim Iguaz Juan |
| author_facet | Joaquim Iguaz Juan |
| author_sort | Joaquim Iguaz Juan |
| collection | DOAJ |
| description | The best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale. We reconsider the expected mass function assuming a CMB-like primordial spectrum and associated not only to the QCD phase transition proper, but also the $e^{+}e^{-}$ annihilation process, and analyze the constraints on this scenario from a number of observations. We find that the scenario is not viable, unless an ad hoc mass evolution for the PBH mass function and a cutoff in power-spectrum very close to the QCD scale are introduced by hand. |
| first_indexed | 2024-03-13T01:17:21Z |
| format | Article |
| id | doaj.art-414feb3d89d046aeb6a7de334b073a55 |
| institution | Directory Open Access Journal |
| issn | 2666-4003 |
| language | English |
| last_indexed | 2024-03-13T01:17:21Z |
| publishDate | 2023-07-01 |
| publisher | SciPost |
| record_format | Article |
| series | SciPost Physics Proceedings |
| spelling | doaj.art-414feb3d89d046aeb6a7de334b073a552023-07-05T08:57:40ZengSciPostSciPost Physics Proceedings2666-40032023-07-011205210.21468/SciPostPhysProc.12.052Ruling out QCD phase transition as a PBH origin of LIGO/Virgo eventsJoaquim Iguaz JuanThe best-motivated scenario for a sizable primordial black hole (PBH) contribution to the LIGO/Virgo binary black hole mergers invokes the QCD phase transition, which naturally enhances the probability to form PBH with masses of stellar scale. We reconsider the expected mass function assuming a CMB-like primordial spectrum and associated not only to the QCD phase transition proper, but also the $e^{+}e^{-}$ annihilation process, and analyze the constraints on this scenario from a number of observations. We find that the scenario is not viable, unless an ad hoc mass evolution for the PBH mass function and a cutoff in power-spectrum very close to the QCD scale are introduced by hand.https://scipost.org/SciPostPhysProc.12.052 |
| spellingShingle | Joaquim Iguaz Juan Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events SciPost Physics Proceedings |
| title | Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events |
| title_full | Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events |
| title_fullStr | Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events |
| title_full_unstemmed | Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events |
| title_short | Ruling out QCD phase transition as a PBH origin of LIGO/Virgo events |
| title_sort | ruling out qcd phase transition as a pbh origin of ligo virgo events |
| url | https://scipost.org/SciPostPhysProc.12.052 |
| work_keys_str_mv | AT joaquimiguazjuan rulingoutqcdphasetransitionasapbhoriginofligovirgoevents |