Speaker
Description
The intense flux of low-energy reactor electron antineutrinos ($\bar{\nu}_{e}$), together with compact low-threshold germanium detectors, provides a powerful experimental platform for precision measurements of coherent elastic neutrino-nucleus scattering ($\nu A_{el}$) [1,2] as well as sensitive probes of neutrino electromagnetic properties [3]. We will present recent experimental results from the TEXONO Collaboration at the Kuo-Sheng Reactor Neutrino Laboratory, with emphasis on $\nu A_{el}$ measurements [4] and searches for neutrino electromagnetic properties. The study utilizes 420(800) kg$\cdot$days of Reactor ON(OFF) exposure acquired with two electro-cooled $p$-type point-contact germanium ($p$PCGe) detectors of 500 g and 1434 g, operated at an ionization-energy threshold of 200 eV. In addition, we will discuss the current status and prospective developments of the TEXONO experiment, including our strategies for enhanced background suppression and systematic treatment of analysis thresholds, with the aim of further improving the physics sensitivity in the reactor energy regime.
References
[1] S. Kerman, et al. (TEXONO Collaboration), Phys. Rev. D 93, 113006 (2016).
[2] V. Sharma et al. (TEXONO Collaboration), Phys. Rev. D 103, 092002 (2021).
[3] H.T. Wong et al. (TEXONO Collaboration), Phys. Rev. D 75, 012001 (2007).
[4] S. Karmakar et al. (TEXONO Collaboration), Phys. Rev. Lett. 134, 121802 (2025).