QCD sum-rule results for heavy-light meson decay constants and comparison with lattice QCD

Abstract

Updated predictions for the decay constants of the D, Ds, B and Bs mesons obtained from Borel QCD sum rules for heavy-light currents are presented and compared with the recent lattice averages performed by the Flavor Lattice Averaging Group. An excellent agreement is obtained in the charm sector, while some tension is observed in the bottom sector. Moreover, available lattice and QCD sum-rule calculations of the decay constants of the vector D*, Ds*, B* and Bs* mesons are compared. Again some tension in the bottom sector is observed.

arXiv commentProceedings of the 8th International Workshop on the CKM Unitarity Triangle (CKM 2014), Vienna, Austria, September 8-12, 2014

References in corpus (1)

• Leptonic Decays of Charged Pseudoscalar Mesons

Cited by in corpus (6)

• Heavy-Light Mesons on the Light Front
• Precise Ratios of Decay Constants of Vector over Pseudoscalar $B_{(s)}$ Mesons
• Lattice QCD Study of $B$-meson Decay Constants from ETMC
• Heavy-Meson Decay Constants: QCD Sum-Rule Glance at Isospin Breaking
• Heavy-Meson Decay Constants: Isospin Breaking from QCD Sum Rules
• Advances in QCD sum rule calculations