TY - JOUR
T1 - Toward a unified treatment of Δs=0 parity violation in low-energy nuclear processes
AU - Gardner, Susan
AU - Muralidhara, Girish
N1 - Publisher Copyright:
© 2023 American Physical Society.
PY - 2023/5
Y1 - 2023/5
N2 - We revisit the unified treatment of low-energy hadronic parity violation espoused by Desplanques, Donoghue, and Holstein to the end of an ab initio treatment of parity violation in low-energy nuclear processes within the standard model. We use our improved effective Hamiltonian and precise nonperturbative assessments of the quark charges of the nucleon within lattice quantum chromodynamics (QCD) to make new assessments of the parity-violating meson-nucleon coupling constants. Comparing with recent, precise measurements of hadronic parity violation in few-body nuclear reactions, we find improved agreement with these experimental results, though some tensions remain. We thus note the broader problem of comparing low-energy constants from nuclear and few-nucleon systems, considering, too, unresolved theoretical issues in connecting an ab initio, effective Hamiltonian approach to chiral effective theories. We note how future experiments and lattice QCD studies could sharpen the emerging picture, promoting the study of hadronic parity violation as a laboratory for testing "end-to-end"theoretical descriptions of weak processes in hadrons and nuclei at low energies.
AB - We revisit the unified treatment of low-energy hadronic parity violation espoused by Desplanques, Donoghue, and Holstein to the end of an ab initio treatment of parity violation in low-energy nuclear processes within the standard model. We use our improved effective Hamiltonian and precise nonperturbative assessments of the quark charges of the nucleon within lattice quantum chromodynamics (QCD) to make new assessments of the parity-violating meson-nucleon coupling constants. Comparing with recent, precise measurements of hadronic parity violation in few-body nuclear reactions, we find improved agreement with these experimental results, though some tensions remain. We thus note the broader problem of comparing low-energy constants from nuclear and few-nucleon systems, considering, too, unresolved theoretical issues in connecting an ab initio, effective Hamiltonian approach to chiral effective theories. We note how future experiments and lattice QCD studies could sharpen the emerging picture, promoting the study of hadronic parity violation as a laboratory for testing "end-to-end"theoretical descriptions of weak processes in hadrons and nuclei at low energies.
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U2 - 10.1103/PhysRevC.107.055501
DO - 10.1103/PhysRevC.107.055501
M3 - Article
AN - SCOPUS:85161304453
SN - 2469-9985
VL - 107
JO - Physical Review C
JF - Physical Review C
IS - 5
M1 - 055501
ER -