NNLO Unquenched Calculation of the b Quark Mass

Details NNLO Unquenched Calculation of the b Quark Mass NNLO Unquenched Calculation of the b Quark Mass

2000-02-07

arxiv.org/abs/hep-lat/0002007v1

JHEP 0003:018,2000

Physics

High Energy Physics

High Energy Physics - Lattice

19 pages, 1 figure

Scientific paper

10.1088/1126-6708/2000/03/018

By combining the first unquenched lattice computation of the B-meson binding energy and the two-loop contribution to the lattice HQET residual mass, we determine the (\bar{{MS}}) (b)-quark mass, (\bar{m}_{b}(\bar{m}_{b})). The inclusion of the two-loop corrections is essential to extract (\bar{m}_{b}(\bar{m}_{b})) with a precision of ({\cal O}(\Lambda^{2}_{QCD}/m_{b})), which is the uncertainty due to the renormalon singularities in the perturbative series of the residual mass. Our best estimate is (\bar{m}_{b}(\bar{m}_{b}) = (4.26 \pm 0.09) {\rm GeV}), where we have combined the different errors in quadrature. A detailed discussion of the systematic errors contributing to the final number is presented. Our results have been obtained on a sample of (60) lattices of size (24^{3}\times 40) at (\beta =5.6), using the Wilson action for light quarks and the lattice HQET for the (b) quark, at two values of the sea quark masses. The quark propagators have been computed using the unquenched links generated by the T(\chi)L Collaboration.

Affiliated with

Also associated with

No associations

Rating

NNLO Unquenched Calculation of the b Quark Mass 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 NNLO Unquenched Calculation of the b Quark Mass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and NNLO Unquenched Calculation of the b Quark Mass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-608665