Erratum: Time-like heavy-flavour thresholds for fragmentation functions: the light-quark matching condition at NNLO

We provide a correction to the coefficient proportional to (1z) in the NNLO time-like matching condition for lightquark fragmentation functions.Although the antenna function containing the double-real correction to the massive contribution is finite in four dimensions, it inheritances a scheme dependency when promoted to a distribution, due to the end-point soft regularisation.Therefore, Eq. ( 39) of the paper introduced a scheme-dependent terms proportional to (1-z) in the double-real contribution.A scheme transformation is needed to match the MS conventions of all the other ingredients entering the calculation.In order to be able to perform a scheme transformation to MS, for the fragmentation antenna B0,id.iih h (z, ), the prescription of Eq. ( 39) must be replaced as follows

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Publication Details

Journal
The European Physical Journal C
Published
2026-04-27
DOI
https://doi.org/10.1140/epjc/s10052-026-15628-w
Primary Topic
Particle physics theoretical and experimental studies
Type
article
Field-Weighted Citation Impact
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article

Erratum: Time-like heavy-flavour thresholds for fragmentation functions: the light-quark matching condition at NNLO

Leonardo Bonino, Christian Biello
The European Physical Journal C
Particle physics theoretical and experimental studies
article

Erratum: Time-like heavy-flavour thresholds for fragmentation functions: the light-quark matching condition at NNLO

Leonardo Bonino, Christian Biello
article en

Abstract

We provide a correction to the coefficient proportional to (1z) in the NNLO time-like matching condition for lightquark fragmentation functions.Although the antenna function containing the double-real correction to the massive contribution is finite in four dimensions, it inheritances a scheme dependency when promoted to a distribution, due to the end-point soft regularisation.Therefore, Eq. ( 39) of the paper introduced a scheme-dependent terms proportional to (1-z) in the double-real contribution.A scheme transformation is needed to match the MS conventions of all the other ingredients entering the calculation.In order to be able to perform a scheme transformation to MS, for the fragmentation antenna B0,id.iih h (z, ), the prescription of Eq. ( 39) must be replaced as follows

The European Physical Journal CVol. 86(4)
University of Zurich (CH), Instituto de Física Teórica (ES)
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Particle physics theoretical and experimental studies
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