Cogenesis of baryon and dark matter with PBHs and the QCD axion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00603631" target="_blank" >RIV/68378271:_____/24:00603631 - isvavai.cz</a>

Výsledek na webu

<a href="https://hdl.handle.net/11104/0364455" target="_blank" >https://hdl.handle.net/11104/0364455</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevD.110.115013" target="_blank" >10.1103/PhysRevD.110.115013</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Cogenesis of baryon and dark matter with PBHs and the QCD axion

Popis výsledku v původním jazyce

With entropy injection, an early matter-dominated epoch (EMD) impels the axion decay constant fa toward larger values to produce correct axion dark matter (DM) abundance, thereby unfolding the low-mass axion (ma less than or similar to 10-5 eV) parameter space to be searched for in axion experiments. We implement this proposition in a scenario where fa and the leptogenesis scale in a seesaw mechanism are equivalent. We show that if, instead, the EMD is provided by evaporating ultralight primordial black holes (PBHs), the scenario becomes strikingly testable with gravitational wave (GW) background alongside the axion searches. In particular, while being consistent with correct axion DM abundance, the scale fa >= 1012 GeV, corresponding to the unflavored regime of leptogenesis with hierarchical right-handed neutrinos, can be probed with GW and axion experiments, which is otherwise not testable at neutrino or collider experiments. Additionally, axions produced from PBH evaporation can give rise to dark radiation within reach of future

Název v anglickém jazyce

Cogenesis of baryon and dark matter with PBHs and the QCD axion

Popis výsledku anglicky

With entropy injection, an early matter-dominated epoch (EMD) impels the axion decay constant fa toward larger values to produce correct axion dark matter (DM) abundance, thereby unfolding the low-mass axion (ma less than or similar to 10-5 eV) parameter space to be searched for in axion experiments. We implement this proposition in a scenario where fa and the leptogenesis scale in a seesaw mechanism are equivalent. We show that if, instead, the EMD is provided by evaporating ultralight primordial black holes (PBHs), the scenario becomes strikingly testable with gravitational wave (GW) background alongside the axion searches. In particular, while being consistent with correct axion DM abundance, the scale fa >= 1012 GeV, corresponding to the unflavored regime of leptogenesis with hierarchical right-handed neutrinos, can be probed with GW and axion experiments, which is otherwise not testable at neutrino or collider experiments. Additionally, axions produced from PBH evaporation can give rise to dark radiation within reach of future

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10303 - Particles and field physics

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physical Review D

ISSN

2470-0010

e-ISSN

2470-0029

Svazek periodika

110

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

115013

Kód UT WoS článku

001385922200004

EID výsledku v databázi Scopus

2-s2.0-85212425565