Decay constants from twisted mass QCD
ETM Collaboration: P. Dimopoulos, C. McNeile, C. Michael, S. Simula,, and C. Urbach
TL;DR
This paper reports on the calculation of rho meson mass and decay constants using unquenched twisted mass QCD configurations, and discusses the importance of three decay constants in charmonium.
Contribution
It provides new results for rho meson properties from unquenched twisted mass lattice QCD and explains the role of decay constants in charmonium.
Findings
Chiral extrapolations of rho meson mass and decay constants presented.
Use of nf=2 unquenched gauge configurations with twisted mass fermions.
Explanation of the necessity of three decay constants in charmonium.
Abstract
We present results for chiral extrapolations of the mass and decay constants of the rho meson. The data sets used are the nf=2 unquenched gauge configurations generated with twisted mass fermions by the European Twisted Mass Collaboration. We describe a calculation of three decay constants in charmonium and explain why they are required.
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Taxonomy
TopicsQuantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies · High-Energy Particle Collisions Research