Accessing new physics with an undoped, cryogenic CsI CEvNS detector for COHERENT at the SNS

P S Barbeau,V Belov,I Bernardi,C Bock,A Bolozdynya,R Bouabid,J Browning,B Cabrera-Palmer,E Conley,V Da Silva,J Daughhetee,J Detwiler,K Ding,M R Durand,Y Efremenko,S R Elliott,A Erlandson,L Fabris,M Febbraro,A Galindo-Uribarri,M P Green,J Hakenmüller,M R Heath,S Hedges,B A Johnson,T Johnson,A Khromov,A Konovalov,E Kozlova,A Kumpan,O Kyzylova,J M Link,J Liu,A Major,K Mann,D M Markoff,J Mattingly,P E Mueller,J Newby,N Ogoi,J O’Reilly,D S Parno,D Pérez-Loureiro,S I Penttila,D Pershey,C G Prior,J Queen,R Rapp,H Ray,O Razuvaeva,D Reyna,G C Rich,D Rudik,J Runge,D J Salvat,J Sander,K Scholberg,A Shakirov,G Simakov,W M Snow,V Sosnovtsev,M Stringer,T Subedi,B Suh,B Sur,R Tayloe,K Tellez-Giron-Flores,Y.-T Tsai,J Vanderwerp,E E Van Nieuwenhuizen,R L Varner,C J Virtue,G Visser,K Walkup,E M Ward,T Wongjirad,Y Yang,J Yoo,C.-H Yu,A Zaalishvili

doi:10.1103/physrevd.109.092005

Abstract

We consider the potential for a 10 kg undoped cryogenic CsI detector operating at the Spallation Neutron Source to measure coherent elastic neutrino-nucleus scattering and its sensitivity to discover new physics beyond the standard model (BSM). Through a combination of increased event rate, lower threshold, and good timing resolution, such a detector would significantly improve on past measurements. We considered tests of several BSM scenarios such as neutrino nonstandard interactions and accelerator-produced dark matter. This detector’s performance was also studied for relevant questions in nuclear physics and neutrino astronomy, namely the weak charge distribution of Cs and I nuclei and detection of neutrinos from a core-collapse supernova. Published by the American Physical Society 2024

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