QQCWB

GV

Nuclear Decay Anomalies As A Signature Of Axion Dark Matter

Di: Ava

Axions have a double motivation: they solve the ‘strong CP problem’ of the Standard Model of elementary particles and they are a candidate for the dark matter of the Universe. Dark matter axions can be detected on Earth by converting them to photons in an electromagnetic cavity permeated by a strong magnetic field. A signal in such a detector, called Searching for axion dark matter via nuclear decay anomalies γ Nick Houston, Beijing University of Technology In collaboration with Xin Zhang (NAOC)and Tianjun Li (ITP-CAS) Based on 2212.XXXX Abstract We propose to investigate the time modulation of radioisotope decays deep underground as a method to explore axion dark matter. In this work, we focus on the α -decay of heavy isotopes and develop a theoretical description for the θ -dependence of α -decay half-lives, which enables us to predict the time variation of α -radioactivity in response to an

Explore the intriguing connection between nuclear decay anomalies and axion dark matter in this 44-minute lecture by Nick Houston at the Galileo Galilei Institute. Delve into the latest research and theories surrounding unexplained variations in nuclear decay rates and their potential link to the elusive axion particle, a leading candidate for dark matter. Gain insights into cutting-edge We calculate the accurate spectrum of the stochastic gravitational-wave background from U(1) gauge fields produced by axion dark matter. The explosive production of gauge fields soon invalidates the applicability of the linear analysis and one needs nonlinear schemes. We make use of numerical lattice simulations to properly follow the nonlinear Nuclear decay anomalies as a signature of axion dark matter 19 May 2023, 10:20 25m Hawking Auditorium (Texas A&M University)

Nuclear decay anomalies as a signature of axion dark matter

(PDF) Oscillations of atomic energy levels induced by QCD axion dark matter

To this end, we develop a theoretical framework to compute the θ-dependence of weak nuclear decays, including electron capture and β decay, which enables us to predict the time variation of weak radioactivity in response to an oscillating axion dark matter background. A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate a seismic shift in our understanding of fundamental physics. We provide the first mechanism to explain these findings, via the misalignment mechanism of QCD axion dark Abstract The axion has been proposed as a candidate for dark matter and a solution to the Strong Charge-Parity (CP) problem in quantum chromodynamics (QCD). Here, we examine the theoretical basis for axions, a hypothetical particle with a small mass and no electric charge, and discuss alternative dark matter candidates, including WIMPs and sterile neutrinos.

We investigate the time modulation of weak nuclear decays as a method to probe axion dark matter. To this end, we develop a theoretical framework to compute the θ dependence of weak nuclear decays, including electron capture and β decay, which enables us to predict the time variation of weak radioactivity in response to an oscillating axion dark matter background.

A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate a seismic shift in our understanding of fundamental physics. We provide the first mechanism to explain these findings, via the misalignment mechanism of QCD axion dark A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate a seismic shift in our understanding of fundamental physics. We provide the first mechanism to explain these findings, via the misalignment mechanism of QCD axion dark

Nuclear decay anomalies as a signature of axion dark matter Preprint Mar 2023 Xin Zhang Nick Houston Li Tianjun

  • Sensitivity of JWST to eV-Scale Decaying Axion Dark Matter
  • Axions:AnOverviewoftheTheoreticalandExperimentalintheSearch for Dark Matter
  • Detecting neutrino-boosted axion dark matter in the MeV gap

A quantum sensing technique to scan for axion dark matter using superconducting qubits boosts search speed 20-fold by circumventing quantum noise limits. This scalable approach enables dark matter experiments with unprecedented sensitivity. A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate a seismic shift in our understanding of fundamental physics. We provide the first mechanism to explain these findings, via the misalignment mechanism of QCD axion dark

New Limit on Axionlike Dark Matter Using Cold Neutrons

Title题目 Nuclear decay anomalies as a signature of axion dark matter Speaker报告人 Nick Houston (Beijing University of Technology) Date日期 2025年3月14日 16:00 Venue地点 北楼322 Abstract摘要 A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports The axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force. We then discuss how the axion emerges Axions are hypothetical particles that constitute leading candidates for the identity of dark matter. Here, the authors improve previous exclusion bounds on axion-like particles in the range of 1.

Nuclear decay anomalies as a signature of axion dark matter Article Full-text available Oct 2023 PHYS REV D 赵振华：15164023728 李春花：15909856053 郭禹辰：15504118985 Nuclear decay anomalies as a signature of axion dark matter 2 Nov 2024, 17:00 20m Session 4 We propose a dark matter direct-detection strategy using charged particle decays at accelerator-based experiments. If ultralight (mφ ≪ eV) dark matter has a misalignment abundance, its local field oscillates in time at a frequency set by its mass. If it also couples to flavor-changing neutral currents, rare exotic decays such as μ → eφ′ and τ → e(μ)φ′ inherit this modulation

A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate Axion dark matter QCD effects produce an effective periodic potential in which the axion field moves. [1] Expanding the potential about one of its minima, one finds that the product of the axion mass with the axion decay constant is determined by the topological susceptibility of We give for the first time theoretical estimates of unknown rare electron-capture (EC) decay branchings of $^{44}\\mathrm{Ti}$, $^{57}\\mathrm{Co}$, and $^{139}\\mathrm{Ce}$, relevant for searches of (exotic) dark-matter particles. The nuclear-structure calculations have been done exploiting the nuclear shell model with well-established Hamiltonians and an

The axion has emerged in recent years as a leading particle candidate to provide the mysterious dark matter in the cosmos, as we review here for a general scientific audience. We describe first the historical roots of the axion in the Standard Model of particle physics and the problem of charge-parity invariance of the strong nuclear force. We then discuss how the axion emerges We present a theoretical model for detecting axions from neutron stars in a QCD phase of quark matter. The axions would be produced from a quark-antiquark pair u u ¯ or d d ¯ , in loop (s) involving gluons. The chiral anomaly of QCD and the spontaneously broken symmetry are invoked to explain the non-conservation of the axion current.

First signatures of electronic states that permit axion dynamics have been reported in condensed-matter systems.

We propose a dark matter direct-detection strategy using charged particle decays at accelerator-based experiments. If ultralight (mφ ≪ eV) dark matter has a misalignment abundance, its local field oscillates in time at a frequency set by its mass. If it also couples to flavor-changing neutral currents, rare exotic decays such as μ → eφ′ and τ → e(μ)φ′ inherit this

Measurements made by the JWST observatory could be used to detect photons emitted by the decay of a hypothetical form of dark matter particle known as the axion. Measurements made by the JWST observatory could be used to detect photons emitted by the decay of a hypothetical form of dark matter particle known as the axion. A number of nuclear decay anomalies have been reported in the literature, which purport to show periodic variations in the decay rates of certain radioisotopes. If these reports reflect reality, they would necessitate a seismic shift in our understanding of fundamental physics. We provide the first mechanism to explain these findings, via the misalignment mechanism of QCD axion dark

Nuclear decay anomalies as a signature of axion dark matter Preprint Mar 2023 Xin Zhang Nick Houston Li Tianjun

The axion has been proposed as a candidate for dark matter and a solution to the Strong Charge-Parity (CP) problem in quantum chromodynamics (QCD). Here, we examine the theoretical basis for axions, a hypothetical particle with a small mass and no electric charge, and discuss alternative dark matter candidates, including WIMPs and sterile neutrinos. We also highlight