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arXiv · 1411.5566

Lattice QCD Study of $B$-meson Decay Constants from ETMC

A. Bussone·N. Carrasco·P. Dimopoulos·R. Frezzotti·V. Giménez·G. Herdoíza·P. Lami·V. Lubicz·C. Michael·E. Picca·L. Riggio·G. C. Rossi·F. Sanfilippo·A. Shindler·S. Simula·C. Tarantino
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Abstract

We discuss a lattice QCD computation of the $B$-meson decay constants by the ETM collaboration where suitable ratios allow to reach the bottom quark sector by combining simulations around the charm-quark mass with an exactly known static limit. The different steps involved in this ratio method are discussed together with an account of the assessment of various systematic effects. A comparison of results from simulations with two and four flavour dynamical quarks is presented.

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A. Bussone, N. Carrasco, P. Dimopoulos, R. Frezzotti, V. Giménez, G. Herdoíza, P. Lami, V. Lubicz, C. Michael, E. Picca, L. Riggio, G. C. Rossi, F. Sanfilippo, A. Shindler, S. Simula, C. Tarantino. 2014-11-20. Lattice QCD Study of $B$-meson Decay Constants from ETMC. https://arxiv.org/abs/1411.5566

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