Novel approach to investigate ATOMKI anomaly using Coherent CAPTAIN-Mills detectors

Abstract

ATOMKI nuclear anomaly has suggested a new BSM (Beyond the Standard Model) boson with mass $\sim 17$ MeV emitted from excited nuclei and quickly decays into a pair of $e^{+}{e}^{-}$. In order to search for the new particle, we propose a new approach that utilizes the ongoing Coherent CAPTAIN-Mills (CCM) 10-ton LAr (liquid argon) detectors. The neutrons from the Lujan target can scatter inelastically by the PMT glass in the CCM detector can produce the new boson which solves the ATOMKI anomaly. The new boson can be detected from its decay to a $e^{+}{e}^{-}$ pair. We find that CCM probes a large area of the anomaly-allowable parameter space. We also show the prediction for a 100-ton LAr detector and 5-ton EOS water detector.

8 pages, 6 figures

References in corpus (14)

• Particle Physics Models for the 17 MeV Anomaly in Beryllium Nuclear Decays
• Shell-model study of boron, carbon, nitrogen and oxygen isotopes based on monopole-based-universal interaction
• A new anomaly observed in ${}^4$He supports the existence of the hypothetical X17 particle
• Quantified Gamow Shell Model interaction for $psd$-shell nuclei
• New anomaly observed in ${}^{12}$C supports the existence and the vector character of the hypothetical X17 boson
• First Dark Matter Search Results From Coherent CAPTAIN-Mills
• Dynamical Evidence For a Fifth Force Explanation of the ATOMKI Nuclear Anomalies
• Can a protophobic vector boson explain the ATOMKI anomaly?
• An updated view on the ATOMKI nuclear anomalies
• First Leptophobic Dark Matter Search from Coherent CAPTAIN-Mills
• EOS: a demonstrator of hybrid optical detector technology
• Prospects for detecting axionlike particles at the Coherent CAPTAIN-Mills experiment
• Calculation of the Thomas-Ehrman shift in ${}^{16}$F and ${}^{15}$O(p,p) cross section with the Gamow shell model
• A 17 MeV pseudoscalar and the LSND, MiniBooNE and ATOMKI anomalies