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    New Leading Contribution to Neutrinoless Double-beta Decay

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    PhysRevLett.120.202001.pdf
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    Author
    Cirigliano, Vincenzo
    Dekens, Wouter
    de Vries, Jordy
    Graesser, Michael L.
    Mereghetti, Emanuele
    Pastore, Saori
    van Kolck, Ubirajara
    Affiliation
    Univ Arizona, Dept Phys
    Issue Date
    2018-05-16
    
    Metadata
    Show full item record
    Publisher
    AMER PHYSICAL SOC
    Citation
    Cirigliano, V., Dekens, W., De Vries, J., Graesser, M. L., Mereghetti, E., Pastore, S., & Van Kolck, U. (2018). New Leading Contribution to Neutrinoless Double-β Decay. Physical review letters, 120(20), 202001. https://doi.org/10.1103/PhysRevLett.120.202001
    Journal
    PHYSICAL REVIEW LETTERS
    Rights
    Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    Within the framework of chiral effective field theory, we discuss the leading contributions to the neutrinoless double-beta decay transition operator induced by light Majorana neutrinos. Based on renormalization arguments in both dimensional regularization with minimal subtraction and a coordinatespace cutoff scheme, we show the need to introduce a leading-order short-range operator, missing in all current calculations. We discuss strategies to determine the finite part of the short-range coupling by matching to lattice QCD or by relating it via chiral symmetry to isospin-breaking observables in the two-nucleon sector. Finally, we speculate on the impact of this new contribution on nuclear matrix elements of relevance to experiment.
    ISSN
    0031-9007
    1079-7114
    PubMed ID
    29864333
    DOI
    10.1103/PhysRevLett.120.202001
    Version
    Final published version
    Sponsors
    DOE topical collaboration on "Nuclear Theory for Double-Beta Decay and Fundamental Symmetries"; Dutch Organization for Scientific Research (NWO); U.S. Department of Energy, Office of Science, Office of Nuclear Physics [DE-FG02-04ER41338]; European Union Research and Innovation program Horizon 2020 [654002]
    Additional Links
    https://link.aps.org/doi/10.1103/PhysRevLett.120.202001
    ae974a485f413a2113503eed53cd6c53
    10.1103/PhysRevLett.120.202001
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