6533b821fe1ef96bd127ad67
RESEARCH PRODUCT
Effective-field-theory predictions of the muon-deuteron capture rate
Lucas PlatterBijaya AcharyaAndreas Ekströmsubject
Coupling constantPhysicsMuonNuclear Theory010308 nuclear & particles physicsFOS: Physical sciencesRadius01 natural sciencesComputational physicsInterpretation (model theory)Nuclear Theory (nucl-th)0103 physical sciencesEffective field theoryTruncation (statistics)Nuclear Experiment (nucl-ex)010306 general physicsNucleonNuclear ExperimentCommunication channeldescription
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 is 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 ${}^1S_0$ channel, we find an uncertainty of approximately $4.6~s^{-1}$ due to the truncation in the effective field theory and an uncertainty of $3.9~s^{-1}$ due to the uncertainty in the axial radius of the nucleon, both of which are similar in size to the targeted experimental precision.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2018-01-01 |