Experimental Sensitivities in Reactor Neutrino Nucleus Elastic Scattering with Germanium

Shuvadeep Karmakar^1,2*, V. Sharma³, H.T. Wong¹

¹Institute of Physics, Academia Sinica, Taipei, Taiwan
²Department of Physics, GLA University, Mathura, India
³Department of Physics, H.N.B. Garhwal University, Uttarakhand, India

* Presenter:Shuvadeep Karmakar, email:skarmakar@gate.sinica.edu.tw

Neutrino Nucleus elastic scattering (νA_el ) is a great tool to look at neutrinos with small-sized detectors. Its cross-section was first measured by COHERENT collaboration with CsI(Na) detector [1-5]. The current aim of the Taiwan EXperiment On NeutrinO (TEXONO) is to measure νAel with low-energy neutrinos at Kuo-Sheng (KS) nuclear power plant. Reactor neutrinos with energy <10 MeV produces few keV nuclear recoils in the low threshold germanium detector [1], it further gets quenched due to some undetectable heat generation. Quantum mechanical coherency is complete in this kinematical range [3-8]. We compare our latest TEXONO results with other νA_el experiments with germanium detector in particular on Standard Model cross sections as well as constraints on quenching modeling.


References
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[2] Akimov et al., Science 357, 1123 (2017)
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[4] V. Sharma et al., Phys. Rev. D 103, 092002 (2021)
[5] H. T. Wong et al, Int. J. Mod. Phys. D 33, 1830014 (2018).
[6] J. Lindhard et. al., Mat. Fys. Medd. 33, 10 (1963).
[7] V. Sharma et al., Indian J. of Phys. 92, 1145 (2018).
[8] L. Singh, et al., Phys. Rev. D 99, 032009 (2019).

Keywords: Neutrino Nucleus elastic scattering, Quenching factor, Sub-keV Germanium