Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential

André H. Hoang; Maximilian Stahlhofen

doi:10.1007/JHEP06(2011)088

Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential

André H. Hoang (Corresponding author), Maximilian Stahlhofen

Particle Physics

Publications: Contribution to journal › Article › Peer Reviewed

Abstract

Using the nonrelativistic effective field theory vNRQCD, we determine the contribution to the next-to-leading logarithmic (NLL) running of the effective quark-antiquark potential at order upsilon (1/m /k/) from diagrams with one potential and two ultrasoft loops, upsilon being the velocity of the quarks in the c. m. frame. The results are numerically important and complete the description of ultrasoft next-to-next-to-leading logarithmic (NNLL) order effects in heavy quark pair production and annihilation close to threshold.

Original language	English
Article number	088
Number of pages	27
Journal	Journal of High Energy Physics
Volume	2011
Issue number	6
DOIs	https://doi.org/10.1007/JHEP06(2011)088
Publication status	Published - 2011

Austrian Fields of Science 2012

103036 Theoretical physics
103024 Quantum field theory
103034 Particle physics

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10.1007/JHEP06(2011)088

http://arxiv.org/abs/1102.0269

Cite this

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title = "Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential",

abstract = "Using the nonrelativistic effective field theory vNRQCD, we determine the contribution to the next-to-leading logarithmic (NLL) running of the effective quark-antiquark potential at order upsilon (1/m /k/) from diagrams with one potential and two ultrasoft loops, upsilon being the velocity of the quarks in the c. m. frame. The results are numerically important and complete the description of ultrasoft next-to-next-to-leading logarithmic (NNLL) order effects in heavy quark pair production and annihilation close to threshold.",

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AU - Hoang, André H.

AU - Stahlhofen, Maximilian

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AB - Using the nonrelativistic effective field theory vNRQCD, we determine the contribution to the next-to-leading logarithmic (NLL) running of the effective quark-antiquark potential at order upsilon (1/m /k/) from diagrams with one potential and two ultrasoft loops, upsilon being the velocity of the quarks in the c. m. frame. The results are numerically important and complete the description of ultrasoft next-to-next-to-leading logarithmic (NNLL) order effects in heavy quark pair production and annihilation close to threshold.

UR - http://arxiv.org/abs/1102.0269

U2 - 10.1007/JHEP06(2011)088

DO - 10.1007/JHEP06(2011)088

M3 - Article

SN - 1029-8479

VL - 2011

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

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M1 - 088

ER -

Ultrasoft NLL running of the nonrelativistic O(v) QCD quark potential

Abstract

Austrian Fields of Science 2012

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