Future axion searches with the International Axion Observatory (IAXO)

Abstract

DOI: will be assignedThe International Axion Observatory (IAXO) is a new generation axion helioscope aiming at a sensitivity to the axion-photon coupling of gaγ few × 10 −12 GeV −1 , i.e. 1-1.5 orders of magnitude beyond the one currently achieved by CAST. The project relies on improvements in magnetic field volume together with extensive use of x-ray focusing optics and low background detectors, innovations already successfully tested in CAST. Additional physics cases of IAXO could include the detection of electron-coupled axions invoked to explain the white dwarf cooling, relic axions, and a large variety of more generic axionlike particles (ALPs) and other novel excitations at the low-energy frontier of elementary particle physics. This contribution is a summary of our recent paper [1].

DANCE: Dark matter Axion search with riNg Cavity Experiment

“…The solid lines with shaded region are current bounds obtained from CAST [8] and ABRACADABRA-10cm [9] experiments, and the astrophysical constraints from the gamma-ray observations of SN1987A [10] and the X-ray observations of M87 galaxy [11]. The dashed lines are projected limits from ALPS-II [12], IAXO [13] and ABRACADABRA broadband configuration with 5 T and 1 m 3 [14]. The expected limits from Axion Interferometry proposal with intra-cavity power of 1 MW [2], the expected integrated limits from ADBC experiment with intra-cavity power of 1 MW [3], and the expected sensitivity of Advanced LIGO with a scheme proposed in Ref.…”

Distinguishing axion models with IAXO

“…In order to get information on the underlying fundamental model that gives rise to the axion or ALP, it is crucial to individually measure as many of its properties as possible. In this work, we show that a helioscope [4] such as IAXO [1][2][3] can indeed achieve more than just the discovery, but potentially allows us to measure g aγ and g ae separately. In addition, we consider the possibility to measure the mass in such a setup 2 .…”

“…The International Axion Observatory (IAXO) [1][2][3] is a next generation axion helioscope [4] and, when finished, will be the most sensitive broadband search for solar axions so far. It will explore new parameter space including KSVZ [5,6] and DFSZ [7,8] type axions -motivated by the Peccei-Quinn solution to the strong CPproblem [9][10][11][12] -in the mass range of (1-100) meV [13].…”

“…For example, we can check whether the measured mass and couplings are consistent with the same value of the axion decay constant, thereby providing evidence whether we are dealing with a true QCD axion. 3 In combination with information on the electron coupling, this would then point us in the direction of KSVZ or DFSZ axions. This note is structured as follows.…”

Extracting hidden-photon dark matter from an LC-circuit

“…Consequently, experimental efforts have increased in the last years, and several precision experiments have been and will be set up, like ADMX [13], ALPS [14,15], CAST, CROWS [16], IAXO [17] (just to name a few) and help to cover some of the unexplored parameter space.…”