Search for the Neutron Decay n→X+γ , Where X is a Dark Matter Particle
- Award ID(s):
- 1614545
- PAR ID:
- 10063920
- Author(s) / Creator(s):
- ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »
- Publisher / Repository:
- American Physical Society
- Date Published:
- Journal Name:
- Physical Review Letters
- Volume:
- 121
- Issue:
- 2
- ISSN:
- 0031-9007
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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The decay is an ideal process in which to study flavor-conserving and violation beyond the Standard Model. We deduce the - and -odd quark operators that contribute to originating from the mass-dimension-six Standard Model effective field theory. The corresponding hadron-level operators that generate a nonvanishing amplitude at order in the chiral effective theory are presented for the first time, to the best of our knowledge, in addition to the leading-order operators ascribed to the final state. By fitting the KLOE-2 and the most recent BESIII experimental data, we determine the coefficients of the lowest-order and amplitudes and estimate the potential new physics energy scale. We also perform an impact study of the future experiments. Published by the American Physical Society2024more » « less
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