Vector and axial-vector couplings of D and D* mesons in 2+1 flavor lattice QCD

作者：Can K U; Erkol G^*; Oka M; Ozpineci A; Takahashi T T

来源：Physics Letters B, 2013, 719(1-3): 103-109.

DOI：10.1016/j.physletb.2012.12.050

• Charm mesons
• Coupling constants
• Lattice QCD

Using the axial-vector coupling and the electromagnetic form factors of the D and D* mesons in 2 + 1 flavor lattice QCD, we compute the D*D pi, DD rho and D*D*rho coupling constants, which play an important role in describing the charm hadron interactions in terms of meson-exchange models. We also extract the charge radii of D and D* mesons and determine the contributions of the light and charm quarks separately.

• 出版日期2013-2-12