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Peer-reviewedCC BY 4.0The European Physical Journal C

Renormalon-based resummation for B(D) mesons

  • César Ayala1
  • Gorazd Cvetič2
  1. 1Universidad de Tarapacá
  2. 2Universidad Técnica Federico Santa María
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Abstract

We apply a previously developed method of renormalon-based resummation of spacelike and timelike QCD observables, to evaluate of the values of the pole masses mq m q of q=b q = b and c quarks, using as input the knowledge of the values of the corresponding MS̅ MS ¯ masses m̅q ≡ m̅q(m̅q2) m ¯ q ≡ m ¯ q ( m ¯ q 2 ) . The evaluation also uses the knowledge of the first few coefficients of the perturbation expansion of mq m q (i.e., of mq/m̅q m q / m ¯ q ), as well as the known renormalon structure of that expansion. In the evaluation, we use the timelike QCD running coupling based on a specific holomorphic spacelike QCD coupling, in order to avoid additional ambiguities due to the Landau poles of the usual perturbative coupling. The principal IR regulator parameter of the coupling is varied in an expected range. We also reevaluate the chromomagnetic Wilson coefficient of heavy quark Ĉ(mq2) C ^ ( m q 2 ) , and extract values of several corresponding hadronic parameters.

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Cite

BibTeXRIS
BibTeX
@article{ayala2026renormalonbased,
  title = {{Renormalon-based resummation for B(D) mesons}},
  author = {César Ayala and Gorazd Cvetič},
  journal = {The European Physical Journal C},
  year = {2026},
  month = oct,
  doi = {10.1140/epjc/s10052-026-16480-8},
  url = {https://link.springer.com/article/10.1140/epjc/s10052-026-16480-8},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Renormalon-based resummation for B(D) mesons
AU  - César Ayala
AU  - Gorazd Cvetič
PY  - 2026
DA  - 2026/10/19
JO  - The European Physical Journal C
DO  - 10.1140/epjc/s10052-026-16480-8
UR  - https://link.springer.com/article/10.1140/epjc/s10052-026-16480-8
AB  - We apply a previously developed method of renormalon-based resummation of spacelike and timelike QCD observables, to evaluate of the values of the pole masses m_q m q of q=b q = b and c quarks, using as input the knowledge of the values of the corresponding MS̅ MS ¯ masses m̅_q ≡ m̅_q(m̅_q^2) m ¯ q ≡ m ¯ q ( m ¯ q 2 ) . The evaluation also uses the knowledge of the first few coefficients of the perturbation expansion of m_q m q (i.e., of m_q/m̅_q m q / m ¯ q ), as well as the known renormalon structure of that expansion. In the evaluation, we use the timelike QCD running coupling based on a specific holomorphic spacelike QCD coupling, in order to avoid additional ambiguities due to the Landau poles of the usual perturbative coupling. The principal IR regulator parameter of the coupling is varied in an expected range. We also reevaluate the chromomagnetic Wilson coefficient of heavy quark Ĉ(m_q^2) C ^ ( m q 2 ) , and extract values of several corresponding hadronic parameters.
SN  - 1434-6044
SN  - 1434-6052
ER  -