Hadronic vacuum polarization of the muon on 2+1+1-flavor HISQ ensembles: an update
- Illinois U., Urbana
- U. Utah, Salt Lake City
- Granada U., Theor. Phys. Astrophys.
- Indiana U.
- Fermilab
- U. Colorado, Boulder
We give an update on the status of the Fermilab Lattice-HPQCD-MILC calculation of the contribution to the muon's anomolous magnetic moment from the light-quark, connected hadronic vacuum polarization. We present preliminary, blinded results in the intermediate window for this contribution, $$a_{\mu, \textrm{W}}^{ll}$$. The calculation is performed on $$N_f =2+1+1$$ highly-improved staggered quark (HISQ) ensembles from the MILC collaboration with physical pion mass at four lattice spacings between 0.15 fm and 0.06 fm. We also present preliminary results for a study of the two-pion contributions to the vector-current correlation function performed on the 0.15 fm ensemble where we see a factor of four improvement over traditional noise reduction techniques.
- Research Organization:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP)
- Contributing Organization:
- Fermilab Lattice; HPQCD; MILC
- DOE Contract Number:
- AC02-07CH11359
- OSTI ID:
- 1839554
- Report Number(s):
- FERMILAB-CONF-21-769-T; arXiv:2112.11647; oai:inspirehep.net:1995797
- Country of Publication:
- United States
- Language:
- English
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