出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We present the most recent lattice results for the lowest-order hadronic contribution to the muon
anomalous magnetic moment using 2+1 flavor improved staggered fermions. A precise fit to
the low-q2 region of the vacuum polarization is necessary to accurately extract the muon g−2.
To obtain this fit, we use staggered chiral perturbation theory with the inclusion of the vector
particles as resonances, to evaluate the vacuum polarization. We discuss the preliminary fit results
and attendant systematic uncertainties, paying particular attention to the relative contributions of
the pions and vector mesons.
