REVIEW 5 cited by
Lattice QCD determination of neutron-antineutron matrix elements with physical quark masses
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
Matrix elements of six-quark operators are needed to extract new physics constraints from experimental searches for neutron-antineutron oscillations. This work presents in detail the first lattice quantum chromodynamics calculations of the necessary neutron-antineutron transition matrix elements including calculation methods and discussions of systematic uncertainties. Implications of isospin and chiral symmetry on the matrix elements, power counting in the isospin limit, and renormalization of a chiral basis of six-quark operators are discussed. Calculations are performed with a chiral-symmetric discretization of the quark action and physical light quark masses in order to avoid the need for chiral extrapolation. Non-perturbative renormalization is performed, including a study of lattice cutoff effects. Excited-state effects are studied using two nucleon operators and multiple values of source-sink separation. Results for the dominant matrix elements are found to be significantly larger compared to previous results from the MIT bag model. Future calculations are needed to fully account for systematic uncertainties associated with discretization and finite-volume effects but are not expected to significantly affect this conclusion.
Forward citations
Cited by 5 Pith papers
-
Block Lanczos algorithm for lattice QCD spectroscopy and matrix elements
Block Lanczos is shown to generalize the GEVP method for lattice QCD correlator matrices, providing faster convergence, two-sided error bounds, and improved signal-to-noise.
-
Anisotropic excited bottomonia from a basis of smeared operators
Excited bottomonia masses and widths are extracted from lattice NRQCD using a smeared-operator GEVP, showing a width hierarchy and a slowly melting ground state.
-
New Avenues for $|\Delta B|$ = 2 Processes Beyond Neutron-Antineutron Oscillations
Lambda-antilambda oscillations are already bounded far more strongly by Super-Kamiokande's pp→K+K+ limit (δmΛ ≲ 10^-32 GeV) than by BESIII's direct search, making dedicated oscillation searches non-competitive in the ...
-
Finite temperature hadronic spectral properties
Doubly charmed baryons stay stable and the bottomonium ground state loses 30 to 40 MeV as quark-gluon plasma temperature rises, according to new lattice QCD ensembles.
-
Baryon Number Violation: From Nuclear Matrix Elements to BSM Physics
A workshop report that maps the current experimental and theoretical landscape for baryon number violation, from proton decay and neutron-antineutron oscillation searches to the EFT, lattice QCD, and astrophysical con...
Discussion (0). Continue with ORCID to comment.