Isotensor Axial Polarizability and Lattice QCD Input for Nuclear Double- Decay Phenomenology
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
- City College of New York, NY (United States)
- Univ. of Washington, Seattle, WA (United States). Inst. for Nuclear Theory and Dept. of Physics
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Univ. of Washington, Seattle, WA (United States). Inst. for Nuclear Theory
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States); College of William and Mary, Williamsburg, VA (United States)
The potential importance of short-distance nuclear effects in double-$$\beta$$ decay is assessed using a lattice QCD calculation of the $$nn\rightarrow pp$$ transition and effective field theory methods. At the unphysical quark masses used in the numerical computation, these effects, encoded in the isotensor axial polarisability, 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-$$\beta$$ decays should incorporate this previously neglected contribution if they are to provide reliable guidance for next-generation neutrinoless double-$$\beta$$ decay searches. The prospects of constraining the isotensor axial polarisabilities of nuclei using lattice QCD input into nuclear many-body calculations are discussed.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- NPLQCD Collaboration
- Grant/Contract Number:
- NSF PHY11-25915; PHY15-15738; AC02-05CH11231; SC0010337; FG02-00ER41132; SC0010495; SC0011090; FG02-04ER41302; AC05-00OR22725; AC05-06OR23177
- OSTI ID:
- 1376680
- Alternate ID(s):
- OSTI ID: 1374765
- Report Number(s):
- JLAB-THY-17-2502; DOE/OR/23177-4169; arXiv:1701.03456; MIT-CTP-4867; INT-PUB-16-056; PRLTAO
- Journal Information:
- Physical Review Letters, Vol. 119, Issue 6; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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