Journal
PHYSICAL REVIEW LETTERS
Volume 120, Issue 15, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.152002
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Funding
- U.S. Department of Energy [DE-AC02-05CH11231, DE-FG02-04ER41302, DE-SC00-10337]
- Office of Science of the U.S. Department of Energy [DE-AC05-00OR22725]
- NSF (MRI) [PHY-1626177]
- Commonwealth of Virginia Equipment Trust Fund
- Office of Naval Research
- Maryland Center for Fundamental Physics
- U.S. Department of Energy Early Career Research Award [DE-SC0010495, DE-SC0011090]
- U.S. Department of Energy by LLNL [DE-AC52-07NA27344]
- STFC consolidated Grant [ST/P000681/1]
- JSA [DE-AC05-06OR23177]
- DOE [DE-SC0011090, DE-FG02-00ER41132]
- USQCD SciDAC project
- MIT Pappalardo Fellowship
- USQCD Scientific Discovery through Advanced Computing (SciDAC) project - U.S. Department of Energy, Office of Science, Offices of Advanced Scientific Computing Research, Nuclear Physics, and High Energy Physics
- National Science Foundation [NSF PHY11-25915]
- STFC [ST/P000681/1] Funding Source: UKRI
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Complete flavor decompositions of the matrix elements of the scalar, axial, and tensor currents in the proton, deuteron, diproton, and He-3 at SU(3)-symmetric values of the quark masses corresponding to a pion mass m(pi) similar to 806 MeV are determined using lattice quantum chromodynamics. At the physical quark masses, the scalar interactions constrain mean-field models of nuclei and the low-energy interactions of nuclei with potential dark matter candidates. The axial and tensor interactions of nuclei constrain their spin content, integrated transversity, and the quark contributions to their electric dipole moments. External fields are used to directly access the quark-line connected matrix elements of quark bilinear operators, and a combination of stochastic estimation techniques is used to determine the disconnected sea-quark contributions. The calculated matrix elements differ from, and are typically smaller than, naive single-nucleon estimates. Given the particularly large, O(10%), size of nuclear effects in the scalar matrix elements, contributions from correlated multinucleon effects should be quantified in the analysis of dark matter direct-detection experiments using nuclear targets.
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