Search for 14.4 keV solar axions from M1 transition of {sup 57}Fe with CUORE crystals
We report the results of a search for axions from the 14.4 keV M1 transition from {sup 57}Fe in the core of the sun using the axio-electric effect in TeO{sub 2} bolometers. The detectors are 5 × 5 × 5 cm{sup 3} crystals operated at about 10 mK in a facility used to test bolometers for the CUORE experiment at the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 43.65 kg⋅d of data was made using a newly developed low energy trigger which was optimized to reduce the energy threshold of the detector. An upper limit of 0.58 c⋅kg{sup −1}⋅d{sup −1} is established at 95% C.L., which translates into lower bounds f{sub A} ≥ 3.12 × 10{sup 5} GeV 95% C.L. (DFSZ model) and f{sub A} ≥ 2.41 × 10{sup 4} GeV 95% C.L. (KSVZ model) on the Peccei-Quinn symmetry-breaking scale, for a value of S = 0.5 of the flavor-singlet axial vector matrix element. These bounds can be expressed in terms of axion masses as m{sub A} ≤ 19.2 eV and m{sub A} ≤ 250 eV at 95% C.L. in the DFSZ and KSVZ models respectively. Bounds are given also for the interval 0.35 ≤ S ≤ 0.55.
- OSTI ID:
- 22282859
- Journal Information:
- Journal of Cosmology and Astroparticle Physics, Vol. 2013, Issue 05; Other Information: Country of input: International Atomic Energy Agency (IAEA); ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
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