Effective-field-theory predictions of the muon-deuteron capture rate
Journal article, 2018

We quantify the theoretical uncertainties of chiral effective-field-theory predictions of the muon-deuteron capture rate. Theoretical error estimates of this low-energy process are important for a reliable interpretation of forthcoming experimental results by the MuSun Collaboration. Specifically, we estimate the three dominant sources of uncertainties that impact theoretical calculations of this rate: those resulting from uncertainties in the pool of fit data used to constrain the coupling constants in the nuclear interaction, those due to the truncation of the effective field theory, and those due to uncertainties in the axial radius of the nucleon. For the capture rate into the S01 channel, we find an uncertainty of approximately 4.6s-1 due to the truncation in the effective field theory and an uncertainty of 3.9s-1 due to the uncertainty in the axial radius of the nucleon, both of which are similar in size to the targeted experimental precision of a few percent.

Author

B. Acharya

Johannes Gutenberg University Mainz

University of Tennessee

Andreas Ekström

Chalmers, Physics, Subatomic and Plasma Physics

Lucas Platter

University of Tennessee

Oak Ridge National Laboratory

Physical Review C

24699985 (ISSN) 24699993 (eISSN)

Vol. 98 6 065506

Subject Categories

Subatomic Physics

Other Physics Topics

Theoretical Chemistry

DOI

10.1103/PhysRevC.98.065506

More information

Latest update

1/24/2019