Speaker
Prof.
Ronald Horgan
(DAMTP, University of Cambridge)
Description
I report on progress by the HPQCD Collaboration using radiatively-improved lattice NonRelativistic QCD on ensembles of gluon field configurations that now include u, d, s and c quarks in the sea with the u/d quark mass going down to its physical value. I describe the background field approach for determining the one-loop radiative improvement to coefficients in the NRQCD action, and I present the most accurate results yet for a range of quantities, including f_B/f_B_s,m_B_s/m_B, the B_Bbar mixing calculation, the determination of m_b and the Upsilon-eta_b hyperfine splitting.
Author
Prof.
Ronald Horgan
(DAMTP, University of Cambridge)
Co-authors
Dr
Chris Monahan
(College of William and Mary)
Prof.
Christine Davies
(Physics Dept., University of Glasgow)
Dr
Georg von Hippel
(Physics Dept., University of Mainz)
Prof.
Junko Shigemitsu
(Physics Dept., Ohio State University)
Prof.
Peter Lepage
(Physics Dept., Cornell University)
Dr
Rachel Dowdall
(DAMTP, University of Cambridge)
