Small \(x\) divergences in a heavy quark-antiquark state

DOI10.1016/S0920-5632(02)01324-5zbMATH Open1080.81625arXivhep-ph/0111388OpenAlexW3103629710MaRDI QIDQ1597315

M. Brisudova

Publication date: 12 May 2002

Published in: Nuclear Physics. B. Proceedings Supplements (Search for Journal in Brave)

Abstract: With the current state of similarity renormalisation group approach to light-front QCD, it is possible to address with a degree of generality the issue of light-cone zero modes. We find, contrary to earlier results in a less general framework, that infrared divergences associated with the zero modes do not cancel out in a color singlet heavy quark-antiquark states, except for the lowest order in the nonrelativistic expansion.

Full work available at URL: https://arxiv.org/abs/hep-ph/0111388

zbMATH Keywords

light-cone zero modeslight-front QCDsimilarity renormalisation group approach

Mathematics Subject Classification ID

Strong interaction, including quantum chromodynamics (81V05)

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