Masses and decay constants of the B-system in Lattice QCD

Details Masses and decay constants of the B-system in Lattice QCD Masses and decay constants of the B-system in Lattice QCD

1995-04-26

arxiv.org/abs/hep-lat/9504018v1

Physics

High Energy Physics

High Energy Physics - Lattice

16 pages, postscript. Invited talk at the Bogoliubov International Symposium, Dubna, 18-23 August 1994

Scientific paper

Heavy-light bound states are studied in Lattice QCD with emphasis on parameters of the B-system relevant to experiment. Results are obtained on lattices with lattice spacings from about 0.15 fm to 0.06 fm corresponding to $\beta=5.74, 6.0$ and 6.26, and covering sizes from about 0.7 fm to 2 fm. From our results at the infinite quark mass limit and from propagating heavy quarks with mass of about 1-2.5 GeV we extrapolate to the b-quark mass to obtain the decay constant of the B-meson as well as the mass of $\Lambda_b$ in the continuum. The necessary extrapolations introduce rather large errors and lead to the value $f_B=180(50)$ MeV. We compare with the results from other lattice groups as well as with predictions coming from sum rules. The phenomenological consequences of this value of $f_B$, together with new experimental constraints, are briefly discussed.

Affiliated with

Also associated with

No associations

Rating

Masses and decay constants of the B-system in Lattice QCD does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Masses and decay constants of the B-system in Lattice QCD, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Masses and decay constants of the B-system in Lattice QCD will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-334936