Implications of the cosmic birefringence measurement for the axion dark matter search

Obata, Ippei

doi:10.1088/1475-7516/2022/09/062

Cited by 17 publications

(11 citation statements)

References 130 publications

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“…Note that the obtained limit on the proton EDM is just 14 times weaker than the recent constraint |d p | < 5 × 10 −25 e cm [353] from the experiment [342] with the 199 Hg atom. Remarkably, our limit on d p are nearly 50 times more stringent than the corresponding limits from the 129 Xe EDM experiment [343,344].…”

Section: Limits On Cp -Violating Hadronic Interactions and Nucleon Edmsmentioning

confidence: 55%

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Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop “Physics Beyond Colliders meets theory”, held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.

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Section: Limits On Cp -Violating Hadronic Interactions and Nucleon Edmsmentioning

confidence: 55%

“…Somewhat more model-dependent constraints may also be inferred through CMB birefringence observations (e.g. [126,127,128,129,130]), for instance, if these BSM particles couple to photons.…”

Section: Cosmological Constraints On Ultra-light Axionsmentioning

confidence: 99%

Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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“…We focus on axion fields produced via the misalignment mechanism with decay constant f a greater than the energy scale of inflation H I , such that each field is mostly uniform in our observable patch of the Universe [14][15][16][17]. This is the most common scenario discussed in the literature [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] to explain the static and isotropic nature of the signal, which is generated through the evolution of the axion background. In this case, the unavoidable fluctuations that would be generated during inflation are suppressed by a factor of ∼ H I /f a with respect to the isotropic component, in line with the current absence of evidence of an anisotropic counterpart [34][35][36].…”

Section: Jcap11(2023)017mentioning

confidence: 99%

“…Ref. [30] provides a concrete example of axion's mixing and the implication for cosmic birefringence. Similarly, a correlation between the decay constant and the axion mass, which is exact for the QCD axion m ∝ f −1 a , can arise for string axions when axion's mixing is present [30,44,53].…”

Section: Jcap11(2023)017mentioning

confidence: 99%

Cosmic birefringence from the Axiverse

Gasparotto,

Sfakianakis

2023

J. Cosmol. Astropart. Phys.

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We revisit the evidence for CMB birefringence in the context of a rich Axiverse. Using probability density functions (PDFs) for various axion parameters, such as the mass and axion decay constant, we construct the PDF for the cosmic birefringence angle and investigate its properties. By relating the observed value of the birefringence angle to the mean or standard deviation of the constructed PDF, we constrain the shape of the input PDFs, providing insights into the statistical distribution of the Axiverse. We focus on three different types of axion potentials: cosine, quadratic, and asymptotically linear axion monodromy. Our analysis showcases the potential of cosmic birefringence in constraining the distribution of axion parameters and uncovering possible correlations among them. We additionally offer predictions for “birefringence tomography”, anticipating future measurements of birefringence from lower multipoles, and show how it can be used to rule out simpler versions of the Axiverse. Our findings contribute to the ongoing exploration of the Axiverse and its implications for cosmic birefringence.

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“…The integral runs over the photon's worldline X µ from the point of emission to detection. Isotropic birefringence has been studied in the context of an approximately homogeneous ALP field that may constitute the dark matter or dark energy [6][7][8][9][10][11], yielding information about the ALP-photon coupling (g aγγ ) and the mass of the ALP (m a ). ALPs may also form a network of topological defects in the Universe, and leave a distinctive imprint on the CMB polarization via cosmological birefringence [12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Searching for axion-like particles through CMB birefringence from string-wall networks

Jain

Hagimoto

Long

et al. 2022

J. Cosmol. Astropart. Phys.

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Axion-like particles (ALPs) can form a network of cosmic strings and domain walls that survives after recombination and leads to anisotropic birefringence of the cosmic microwave background (CMB). In addition to studying cosmic strings, we clarify and emphasize how the formation of ALP-field domain walls impacts the cosmic birefringence signal; these observations provide a unique way of probing ALPs with masses in the range 3H 0 ≲ ma ≲ 3H cmb. Using measurements of CMB birefringence from several telescopes, we find no evidence for axion-defect-induced anisotropic birefringence of the CMB. We extract constraints on the model parameters that include the ALP mass ma , ALP-photon coupling 𝒜 ∝ gaγγ fa , the domain wall number N dw, and parameters characterizing the abundance and size of defects in the string-wall network. Considering also recent evidence for isotropic CMB birefringence, we find it difficult to accommodate this with the non-detection of anisotropic birefringence under the assumption that the signal is generated by an ALP defect network.

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Implications of the cosmic birefringence measurement for the axion dark matter search

Cited by 17 publications

References 130 publications

Feebly-interacting particles: FIPs 2020 workshop report

Feebly-interacting particles: FIPs 2020 workshop report

Cosmic birefringence from the Axiverse

Searching for axion-like particles through CMB birefringence from string-wall networks

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