Potential NRQCD for unequal masses and the B<inf>c</inf> spectrum at N<sup>3</sup>LO

Clara Peset, Antonio Pineda, Maximilian Stahlhofen

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10 Citations (Scopus)

Abstract

© 2016, The Author(s). Abstract: We determine the 1/m and 1/m2 spin-independent heavy quarkonium potentials in the unequal mass case with O(α3) and O(α2) accuracy, respectively. We discuss in detail different methods to calculate the potentials, and show the equivalence among them. In particular we obtain, for the first time, the manifestly gauge invariant 1/m and 1/m2 potentials in terms of Wilson loops with next-to-leading order (NLO) precision. As an application of our results we derive the theoretical expression for the Bc spectrum in the weak-coupling limit through next-to-next-to-next-to-leading order (N3LO).
Original languageEnglish
Article number17
JournalJournal of High Energy Physics
Volume2016
Issue number5
DOIs
Publication statusPublished - 1 May 2016

Keywords

  • NLO Computations
  • QCD Phenomenology

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