Cosmic birefringence as a probe of the nature of dark matter: Sterile neutrino and dipolar dark matter

Khodagholizadeh, Jafar; Mahmoudi, S.; Mohammadi, Rohoollah; Sadegh, Mahdi

doi:10.1103/physrevd.108.023023

Cited by 3 publications

(6 citation statements)

References 83 publications

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“…It is deserved to study sterile neutrinos' cosmological effects. In this article, using sterile neutrinos interacting with SM particles (15), we calculate sterile neutrino contributions to the CB angle, comparing with active neutrino contributions [25]. Details of calculations are presented in Appendix A.…”

Section: Cb Angle From Sterile and Cosmic Sm Neutrinos Interacting Wi...mentioning

confidence: 99%

“…Before ending this section, it should be mentioned that we only considered the contribution of the CνB and ALPs interactions to discuss the constraint placed on the parameter space of axion. Some other mechanisms including polarized (2024) 84:619 Compton scattering [70], dipole asymmetry of CMB temperature anisotropy [71], and various sorts of new physics interaction leading to produce CMB B mode polarization [25] that generates EB power spectrum, can contribute to the generation of the CB angle. However, by upgrading data on EB-cross power spectrum along with the theoretical and experimental studies in the future we will be able to get more information about the origin of the reported CB angle.…”

Section: Cb Angle Due To Cνb and Alpmentioning

confidence: 99%

“…Sterile neutrino couplings (15) to SM gauge bosons are righthanded, which are distinct from active neutrino left-handed couplings. Therefore, we need to do calculations analogously to the case of active neutrinos [25]. In this appendix, we present detailed calculations of sterile neutrino contributions to the CB angle.…”

Section: A Appendixmentioning

confidence: 99%

“…Moreover, the weak interaction of the CMB and cosmic neutrino background (CνB) can produce non-vanishing EB power spectra at the level of one loop forward scattering in the presence of scalar perturbation, which generates part of the CB angle [24]. In addition, the impact of dipolar dark matter (DM), as well as sterile neutrino DM interaction with photons in producing the CB effect of the CMB has been studied by authors in [25]. In this paper, we introduce two new sources of CB, i.e., right-handed sterile neutrino DM and sterile neutrino QCD axion DM.…”

Section: Introductionmentioning

confidence: 99%

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Generation of the CMB cosmic birefringence through axion-like particles, sterile and active neutrinos

Mahmoudi,

Sadegh,

Khodagholizadeh

et al. 2024

Eur. Phys. J. C

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The cosmic birefringence (CB) angle refers to the rotation of the linear polarization plane of Cosmic Microwave Background (CMB) radiations when parity-violating theories are considered. We analyzed the Quantum Boltzmann equation for an ensemble of CMB photons interacting with the right-handed sterile neutrino dark matter (DM) and axion-like particles (ALPs) DM in the presence of the scalar metric perturbation. We used the birefringence angle of CMB to study those probable candidates of DM. It is shown that the CB angle contribution of sterile neutrino is much less that two other sources considered here. Next, we combined the results of the cosmic neutrinos’ contribution and the contribution of the ALPs to producing the CMB birefringence and discussed the uncertainty on the parameter space of axions caused by the share of CMB-cosmic neutrino interaction in generating this effect. Finally, we plotted the EB power spectrum of the CMB and showed that this spectrum behaves differently in the presence of cosmic neutrinos and ALPs interactions in small l. Hence, future observed data for $$C^{l}_{EB},$$ C EB l , will help us to distinguish the CB angle value due to the various sources of its production.

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Section: Cb Angle From Sterile and Cosmic Sm Neutrinos Interacting Wi...mentioning

confidence: 99%

Section: Cb Angle Due To Cνb and Alpmentioning

confidence: 99%

Section: A Appendixmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Generation of the CMB cosmic birefringence through axion-like particles, sterile and active neutrinos

Mahmoudi,

Sadegh,

Khodagholizadeh

et al. 2024

Eur. Phys. J. C

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“…Ref [66]. has developed a model of dipole interaction between CMB photon and dark matter and has also shown that it is hard to explain the observed ICB angle 5.…”

mentioning

confidence: 99%

Can we explain cosmic birefringence without a new light field beyond Standard Model?

Nakai,

Namba,

Obata

et al. 2024

J. High Energ. Phys.

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The recent analysis of the Planck 2018 polarization data shows a nonzero isotropic cosmic birefringence (ICB) that is not explained within the ΛCDM paradigm. We then explore the question of whether the nonzero ICB is interpreted by the framework of the Standard Model Effective Field Theory (SMEFT), or at the energy scales of the cosmic microwave background, the low-energy EFT (LEFT) whose dynamical degrees of freedom are five SM quarks and all neutral and charged leptons. Our systematic study reveals that any operator in the EFT on a cosmological background would not give the reported ICB angle, which is observationally consistent with frequency independence. In particular, we estimate the size of the ICB angle generated by the effect that the cosmic microwave background photons travel through the medium of the cosmic neutrino background with parity-violating neutrino-photon interactions and find that it would be too small to explain the data. If the reported ICB angle should be confirmed, then our result would indicate the existence of a new particle that is lighter than the electroweak scale and feebly interacting with the SM particles.

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Cosmic birefringence from CP-violating axion interactions

Luo,

Mathur

2024

J. High Energ. Phys.

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We explore the cosmic birefringence signal produced by an ultralight axion field with a small CP-violating coupling to bulk SM matter in addition to the usual CP-preserving photon coupling. The change in the vacuum expectation value of the field between recombination and today results in a frequency-independent rotation of the plane of CMB linear polarization across the entire sky. While many previous approaches rely on the axion rolling from a large initial expectation value, the couplings considered in this work robustly generate the birefringence signal regardless of initial conditions, by sourcing the field from the cosmological nucleon density. We place bounds on such monopole-dipole interactions using measurements of the birefringence angle from Planck and WMAP data, which improve upon existing constraints by up to three orders of magnitude. We also discuss UV completions of this model, and possible strategies to avoid fine-tuning the axion mass.

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Cosmic birefringence as a probe of the nature of dark matter: Sterile neutrino and dipolar dark matter

Cited by 3 publications

References 83 publications

Generation of the CMB cosmic birefringence through axion-like particles, sterile and active neutrinos

Generation of the CMB cosmic birefringence through axion-like particles, sterile and active neutrinos

Can we explain cosmic birefringence without a new light field beyond Standard Model?

Cosmic birefringence from CP-violating axion interactions

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