TY - JOUR
T1 - New Leading Contribution to Neutrinoless Double- β Decay
AU - Cirigliano, Vincenzo
AU - Dekens, Wouter
AU - De Vries, Jordy
AU - Graesser, Michael L.
AU - Mereghetti, Emanuele
AU - Pastore, Saori
AU - Van Kolck, Ubirajara
N1 - Funding Information:
V. C., W. D., M. G., E. M., and S. P. acknowledge support by the U.S. Department of Energy, Office of Science, and by the LDRD program at Los Alamos National Laboratory. V. C. and E. M. acknowledge partial support from the DOE topical collaboration on “Nuclear Theory for Double-Beta Decay and Fundamental Symmetries.” J. d. V. acknowledges support by the Dutch Organization for Scientific Research (NWO) through a VENI grant. The work of U. v. K. was supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under Award No. DE-FG02-04ER41338, and by the European Union Research and Innovation program Horizon 2020 under Grant No. 654002. We acknowledge stimulating discussions with Will Detmold and Martin Savage, which triggered this research. We thank Joe Carlson, Jon Engel, Amy Nicholson, Maria Piarulli, Petr Vogel, Andre Walker-Loud, and Bob Wiringa for discussions at various stages of this work.
Publisher Copyright:
© 2018 authors. Published by the American Physical Society.
PY - 2018/5/16
Y1 - 2018/5/16
N2 - 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 coordinate-space 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.
AB - 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 coordinate-space 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.
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U2 - 10.1103/PhysRevLett.120.202001
DO - 10.1103/PhysRevLett.120.202001
M3 - Article
C2 - 29864333
AN - SCOPUS:85047211495
VL - 120
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 20
M1 - 202001
ER -