Potential NRQCD for unequal masses and the B<inf>c</inf> spectrum at N3LO

Clara Peset; Antonio Pineda; Maximilian Stahlhofen

doi:10.1007/JHEP05(2016)017

Potential NRQCD for unequal masses and the B<inf>c</inf> spectrum at N3LO

Clara Peset, Antonio Pineda, Maximilian Stahlhofen

Department of Physics

Research output: Contribution to journal › Article › Research › peer-review

12 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 language	English
Article number	17
Journal	Journal of High Energy Physics
Volume	2016
Issue number	5
DOIs	https://doi.org/10.1007/JHEP05(2016)017
Publication status	Published - 1 May 2016

Keywords

NLO Computations
QCD Phenomenology

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10.1007/JHEP05(2016)017

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title = "Potential NRQCD for unequal masses and the Bc spectrum at N3LO",

abstract = "{\textcopyright} 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).",

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T1 - Potential NRQCD for unequal masses and the Bc spectrum at N3LO

AU - Peset, Clara

AU - Pineda, Antonio

AU - Stahlhofen, Maximilian

PY - 2016/5/1

Y1 - 2016/5/1

N2 - © 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).

AB - © 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).

KW - NLO Computations

KW - QCD Phenomenology

U2 - 10.1007/JHEP05(2016)017

DO - 10.1007/JHEP05(2016)017

M3 - Article

VL - 2016

IS - 5

M1 - 17

ER -

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

Abstract

Keywords

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