Results 31 to 40 of about 20,673 (286)

21cm forest probes on the axion dark matter in the post-inflationary Peccei-Quinn symmetry breaking scenarios

open access: yes, 2020
We study the future prospects of the 21cm forest observations on the axion-like dark matter when the spontaneous breaking of the global Peccei-Quinn (PQ) symmetry occurs after the inflation.
Ichiki, Kiyotomo   +2 more
core   +1 more source

Spin-axion coupling [PDF]

open access: yes, 2015
We establish a new covariant phenomenological model, which describes an influence of pseudoscalar (axion) field on spins of test massive particles. The model includes general relativistic equations of particle motion and spin evolution in background ...
Balakin, Alexander B.   +1 more
core   +2 more sources

OVERLOOKED ASTROPHYSICAL SIGNATURES OF AXION(-LIKE) PARTICLES [PDF]

open access: yesThe Identification of Dark Matter, 2007
17 pages, 7 figures, extended proc.
Zioutas, K.   +5 more
openaire   +2 more sources

Probing the dark axion portal with muon anomalous magnetic moment

open access: yesEuropean Physical Journal C: Particles and Fields, 2021
We propose a new scenario of using the dark axion portal at one-loop level to explain the recently observed muon anomalous magnetic moment by the Fermilab Muon g-2 experiment.
Shao-Feng Ge   +2 more
doaj   +1 more source

Precise evaluation of and axion-like particle production * [PDF]

open access: yesChinese Physics C, 2021
Abstract We study the decay of the SM Higgs boson to a massive charm quark pair at the next-to-next-to-leading order QCD and next-to-leading order electroweak. At the second order of QCD coupling, we consider the exact calculation of flavour-singlet contributions where the Higgs boson couples to the internal top and bottom quark. Helpful
Li,Shi-Yuan   +3 more
openaire   +1 more source

Minimal flavor violation with axion-like particles [PDF]

open access: yesJournal of High Energy Physics, 2017
Abstract We revisit the flavor-changing processes involving an axion-like particle (ALP) in the context of generic ALP effective lagrangian with a discussion of possible UV completions providing the origin of the relevant bare ALP couplings.
Choi, Kiwoon   +3 more
openaire   +3 more sources

Axion-like relics: new constraints from old comagnetometer data

open access: yesJournal of High Energy Physics, 2020
The noble-alkali comagnetometer, developed in recent years, has been shown to be a very accurate measuring device of anomalous magnetic-like fields. An ultra-light relic axion-like particle can source an anomalous field that permeates space, allowing for
Itay M. Bloch   +3 more
doaj   +1 more source

Searching for Axino-Like Particle at Fixed Target Experiments

open access: yes, 2020
We investigate the detectability of axino-like particle, which is defined as a supersymmetric partner of axion-like particle and can be a good candidate for dark matter in our Universe.
Choi, Ki-Young   +4 more
core   +1 more source

Dyonic BIon black hole in string inspired model [PDF]

open access: yes, 2001
We construct static and spherically symmetric particle-like and black hole solutions with magnetic and/or electric charge in the Einstein-Born-Infeld-dilaton-axion system, which is a generalization of the Einstein-Maxwell-dilaton-axion (EMDA) system and ...
A. Borde   +50 more
core   +2 more sources

An even lighter QCD axion

open access: yesJournal of High Energy Physics, 2021
We explore whether the axion which solves the strong CP problem can naturally be much lighter than the canonical QCD axion. The Z N $$ {Z}_{\mathcal{N}} $$ symmetry proposed by Hook, with N $$ \mathcal{N} $$ mirror and degenerate worlds coexisting in ...
Luca Di Luzio   +3 more
doaj   +1 more source

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