论文信息 - M_b and f_B from non-perturbatively renormalized HQET with Nf=2 light quarks

M_b and f_B from non-perturbatively renormalized HQET with Nf=2 light quarks

We present an updated analysis of the non-perturbatively renormalized b-quark mass and B meson decay constant based on CLS lattices with two dynamical non-perturbatively improved Wilson quarks. This update incorporates additional light quark masses and lattice spacings in large physical volume to improve chiral extrapolations and to reach the continuum limit. We use Heavy Quark Effective Theory (HQET) including 1/m_b terms with non-perturbative coefficients based on the matching of QCD and HQET developed by the ALPHA collaboration during the past years.

[1] J. Bulava,et al. B meson spectrum and decay constant from Nf=2 simulations , 2010, 1012.1357.

[2] J. Bulava,et al. The B*Bpi Coupling in the Static Limit , 2010 .

[3] N. Tantalo,et al. Non-perturbative improvement of quark mass renormalization in two-flavour lattice QCD , 2010, 1004.3978.

[4] Tereza Mendes,et al. HQET at order 1/m: II. Spectroscopy in the quenched approximation , 2010, 1004.2661.

[5] A. Collaboration,et al. HQET at order 1/m: I. Non-perturbative parameters in the quenched approximation , 2010, 1001.4783.

[6] Tereza Mendes,et al. On the generalized eigenvalue method for energies and matrix elements in lattice field theory , 2009, 0902.1265.

[7] F. Knechtli,et al. O(a) improvement of the HYP static axial and vector currents at one-loop order of perturbation theory , 2008 .

[8] M. Morte,et al. Heavy quark effective theory computation of the mass of the bottom quark , 2006, hep-ph/0609294.

[9] U. Heller,et al. Combining Quark and Link Smearing to Improve Extended Baryon Operators , 2005, hep-lat/0509179.

[10] M. Morte,et al. On lattice actions for static quarks , 2005, hep-lat/0506008.

[11] J. Heitger,et al. Non-perturbative heavy quark effective theory , 2003, hep-lat/0310035.