We present an accurate lattice QCD computation of the b-quark mass, the B and Bs decay constants, the B-mixing bag-parameters for the full four-fermion operator basis, as well as estimates for \xi and f_{Bq}\sqrt{B_q} extrapolated to the continuum limit and the physical pion mass. We have used Nf = 2 dynamical quark gauge configurations at four values of the lattice spacing generated by ETMC. Extrapolation in the heavy quark mass from the charm to the bottom quark region has been carried out using ratios of physical quantities computed at nearby quark masses, having an exactly known infinite mass limit.

Carrasco N, Ciuchini M, Dimopoulos P, Frezzotti R, Gimenez V, Herdoiza H, et al. (2014). B-physics computations from Nf=2 tmQCD. Paper presented at 31st International Symposium on Lattice Field Theory (Lattice 2013), Mainz, Germany.

### B-physics computations from Nf=2 tmQCD

#### Abstract

We present an accurate lattice QCD computation of the b-quark mass, the B and Bs decay constants, the B-mixing bag-parameters for the full four-fermion operator basis, as well as estimates for \xi and f_{Bq}\sqrt{B_q} extrapolated to the continuum limit and the physical pion mass. We have used Nf = 2 dynamical quark gauge configurations at four values of the lattice spacing generated by ETMC. Extrapolation in the heavy quark mass from the charm to the bottom quark region has been carried out using ratios of physical quantities computed at nearby quark masses, having an exactly known infinite mass limit.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/169958
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