PlumX Metrics
Embed PlumX Metrics

Two-loop QCD corrections to the heavy quark form factors: Anomaly contributions

Nuclear Physics B, ISSN: 0550-3213, Vol: 723, Issue: 1, Page: 91-116
2005
  • 80
    Citations
  • 0
    Usage
  • 2
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    80
    • Citation Indexes
      80
  • Captures
    2

Article Description

We present closed analytic expressions for the order αs2 triangle diagram contributions to the matrix elements of the singlet and non-singlet axial vector currents between the vacuum and a quark–antiquark state. We have calculated these vertex functions for arbitrary momentum transfer and for four different sets of internal and external quark masses. We show that both the singlet and non-singlet vertex functions satisfy the correct chiral Ward identities. Using the exact expressions for the finite axial vector form factors, we check the quality and the convergence of expansions at production threshold and for asymptotic energies.

Provide Feedback

Have ideas for a new metric? Would you like to see something else here?Let us know