Isotensor Axial Polarizability and Lattice QCD Input for Nuclear Double-β Decay Phenomenology
Name
PhysRevLett.119.062003.pdf
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Author(s)
Tiburzi, Brian C.
Wagman, Michael L.
Winter, Frank
Chang, Emmanuel
Orginos, Kostas
Savage, Martin J.
Shanahan, Phiala E
Davoudi, Zohreh
Detmold, William
Date Issued
August 2017
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Shanahan, Phiala E. et al. "Isotensor Axial Polarizability and Lattice QCD Input for Nuclear Double- β Decay Phenomenology." Physical Review Letters 119, 6 (August 2017): 062003 © 2017 American Physical Society
Version
Final published version
Abstract
The potential importance of short-distance nuclear effects in double-β decay is assessed using a lattice QCD calculation of the nn→pp transition and effective field theory methods. At the unphysical quark masses used in the numerical computation, these effects, encoded in the isotensor axial polarizability, are found to be of similar magnitude to the nuclear modification of the single axial current, which phenomenologically is the quenching of the axial charge used in nuclear many-body calculations. This finding suggests that nuclear models for neutrinoful and neutrinoless double-β decays should incorporate this previously neglected contribution if they are to provide reliable guidance for next-generation neutrinoless double-β decay searches. The prospects of constraining the isotensor axial polarizabilities of nuclei using lattice QCD input into nuclear many-body calculations are discussed.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.119.062003
