Search for Dark Matter Axions with CAST-CAPP

Adair, C. M.; Altenmüller, K.; Anastassopoulos, V.; Cuendis, S. Arguedas; Baier, Joseph G.; Barth, K.; Белов, А. С.; Bozicevic, D.; Bräuninger, H.; Cantatore, G.; Caspers, F.; Castel, J.; Çetin, S. A.; Chung, Woohyun; Choi, Hyoungsoon; Choi, Jihoon; Dafní, T.; Davenport, M.; Dermenev, A.; Desch, K.; Döbrich, Babette; Fischer, H.; Funk, W.; Galán, J.; Gardikiotis, A.; Gninenko, S.; Golm, J.; Hasinoff, M.; Hoffmann, D. H. H.; Ibáñez, D. Díez; Irastorza, I.G.; Jakovčić, K.; Kamiński, J.; Karuza, M.; Krieger, C.; Kutlu, Çağlar; Lakić, B.; Laurent, J.; Lee, J.; Lee, S.; Luzón, G.; Malbrunot, C.; Margalejo, C.; Maroudas, Marios; Miceli, L.; Mirallas, H.; Obis, L.; Özbey, A.; Özbozduman, Kaan; Pivovaroff, M. J.; Rosu, M.; Ruz, J.; Ruiz-Choliz, Elisa; Schmidt, Sebastian; Schümann, M.; Semertzidis, Yannis K.; Solanki, S. K.; Stewart, L.; Tsagris, I.; Vafeiadis, T.; Vogel, Julia K.; Vretenar, Mario; Youn, Sung Woo; Zioutas, K.

doi:10.1038/s41467-022-33913-6

Cited by 37 publications

(13 citation statements)

References 37 publications

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“…This includes the 10 % prior update contour (solid red) as well as the 90 % aggregate exclusion (dashed red). (c) Results of this work are shown alongside previous exclusion results from HAYSTAC Phase I[31,32] as well as from other haloscopes RBF[56], UF[57] ADMX[19,[58][59][60], CAPP[18,[61][62][63][64], CAST-CAPP[65] and TASEH[66]. The QCD axion model band representing the most natural KSVZ and DFSZ models are shown in yellow[67], with the benchmark KSVZ[10,11] and DFSZ[12,13] model lines shown as black dashed lines.…”

mentioning

confidence: 71%

New Results from HAYSTAC's Phase II Operation with a Squeezed State Receiver

Jewell¹,

Leder²,

Backes³

et al. 2023

Preprint

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A search for dark matter axions with masses >10 µeV/c 2 has been performed using the HAYSTAC experiment's squeezed state receiver to achieve sub-quantum limited noise. This report includes details of the design and operation of the experiment previously used to search for axions in the mass ranges 16.96-17.12 and 17.14-17.28 µeV/c 2 (4.100-4.140 GHz and 4.145-4.178 GHz) as well as upgrades to facilitate an extended search at higher masses. These upgrades include improvements to the data acquisition routine which have reduced the effective dead time by a factor of 5, allowing for the new region to be scanned ∼1.6 times faster with comparable sensitivity. No statistically significant evidence of an axion signal is found in the range 18.44-18.71 µeV/c 2 (4.459-4.523 GHz), leading to an aggregate upper limit exclusion at the 90 % level on the axion-photon coupling of 2.06×g KSVZ γ .

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mentioning

confidence: 71%

New Results from HAYSTAC's Phase II Operation with a Squeezed State Receiver

Jewell¹,

Leder²,

Backes³

et al. 2023

Preprint

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“…Currently, there is a large interest in axion-photon conversion [21][22][23], as axions are presently the leading candidates for dark matter. In a process much like the Gertsenshtein mechanism, axions emerging from the sun can be transformed into X-ray photons by a strong laboratory magnetic field and subsequently detected by an X-ray telescope.…”

Section: Axion-photon Conversionmentioning

confidence: 99%

A Simple Derivation of the Gertsenshtein Effect

Palessandro¹,

Rothman²

2023

Preprint

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As shown by Gertsenshtein in 1961, an external magnetic field can catalyze the mixing of graviton and photon states in a manner analogous to neutrino-flavor oscillations. We first present a straightforward derivation of the mechanism by a method based on unpublished notes of Freeman Dyson. We next extend his method to include boundary conditions and retrieve the results of Boccaletti et al. from 1970. We point out that, although the coupling between the graviton and photon states is extremely weak, the large magnetic fields around neutron stars ∼ 10 14 G make the Gertsenshtein effect a plausible source of gravitons. We also point out that axion-photon mixing, a subject of active current research, is essentially the same process as the Gertsenshtein effect, and so the general mechanism may be of broad astrophysical and cosmological interest.

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“…Green colors are used for limits which are set by dedicated searches for dark photons specifically, [70,[77][78][79][80][81][82][83] while red colors are for recasted axion limits. [36,38,[40][41][42]47,49,[84][85][86][87][88][89][90][91][92][93][94][95][96] We assume the fixed-polarization scenario throughout in this case, and rescale limits to the same common assumed dark matter density of 0.45 GeV cm −3 . Limit data and up-to-date plots can be found in ref.…”

Section: Scalar Dark Matter Limitsmentioning

confidence: 99%

Limits on Dark Photons, Scalars, and Axion‐Electromagnetodynamics with the ORGAN Experiment

et al. 2023

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Axions are a well‐motivated dark matter candidate, with a host of experiments around the world searching for direct evidence of their existence. The ORGAN Experiment is a type of axion detector known as an axion haloscope, which takes the form of a cryogenic resonant cavity embedded in a strong magnetic field. ORGAN recently completed Phase 1a, a scan for axions ≈65 µeV, and placed the most stringent limits to date on the dark matter axion–photon coupling in this region, . It has been shown that axion haloscopes such as ORGAN are automatically sensitive to other kinds of dark matter candidates, such as dark photons, scalar field/dilaton dark matter, and exotic axion–electromagnetic couplings motivated by quantum electromagnetodynamics. The exclusion limits placed on these various dark matter candidates are computed by ORGAN 1a, and sensitivity for some future ORGAN phases are projected. In particular, the dark photon limits are the most sensitive to date in some regions of the parameter space.

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Search for Dark Matter Axions with CAST-CAPP

Cited by 37 publications

References 37 publications

New Results from HAYSTAC's Phase II Operation with a Squeezed State Receiver

New Results from HAYSTAC's Phase II Operation with a Squeezed State Receiver

A Simple Derivation of the Gertsenshtein Effect

Limits on Dark Photons, Scalars, and Axion‐Electromagnetodynamics with the ORGAN Experiment

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