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The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions

Building upon the formulation of transverse-momentum resummation for heavy-quark hadroproduction, we present the first application of the [Formula: see text] subtraction formalism to the computation of electroweak corrections to massive lepton pairs through the Drell–Yan mechanism. We then study the...

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Autores principales: Buonocore, Luca, Grazzini, Massimiliano, Tramontano, Francesco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7089628/
https://www.ncbi.nlm.nih.gov/pubmed/32226282
http://dx.doi.org/10.1140/epjc/s10052-020-7815-z
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author Buonocore, Luca
Grazzini, Massimiliano
Tramontano, Francesco
author_facet Buonocore, Luca
Grazzini, Massimiliano
Tramontano, Francesco
author_sort Buonocore, Luca
collection PubMed
description Building upon the formulation of transverse-momentum resummation for heavy-quark hadroproduction, we present the first application of the [Formula: see text] subtraction formalism to the computation of electroweak corrections to massive lepton pairs through the Drell–Yan mechanism. We then study the power suppressed contributions to the [Formula: see text] subtraction formula in the parameter [Formula: see text] , defined as the minimum transverse momentum of the lepton pair normalised to its invariant mass. We analytically compute the leading power correction from initial and final-state radiation to the inclusive cross section. In the case of initial-state radiation the power correction is quadratic in [Formula: see text] and our analytic result is consistent with results previously obtained in the literature. Final-state radiation produces linear contributions in [Formula: see text] that may challenge the efficiency of the [Formula: see text] subtraction procedure. We explicitly compute the linear power correction in the case of the inclusive cross section and we discuss the extension of our calculation to differential distributions.
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spelling pubmed-70896282020-03-26 The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions Buonocore, Luca Grazzini, Massimiliano Tramontano, Francesco Eur Phys J C Part Fields Regular Article - Theoretical Physics Building upon the formulation of transverse-momentum resummation for heavy-quark hadroproduction, we present the first application of the [Formula: see text] subtraction formalism to the computation of electroweak corrections to massive lepton pairs through the Drell–Yan mechanism. We then study the power suppressed contributions to the [Formula: see text] subtraction formula in the parameter [Formula: see text] , defined as the minimum transverse momentum of the lepton pair normalised to its invariant mass. We analytically compute the leading power correction from initial and final-state radiation to the inclusive cross section. In the case of initial-state radiation the power correction is quadratic in [Formula: see text] and our analytic result is consistent with results previously obtained in the literature. Final-state radiation produces linear contributions in [Formula: see text] that may challenge the efficiency of the [Formula: see text] subtraction procedure. We explicitly compute the linear power correction in the case of the inclusive cross section and we discuss the extension of our calculation to differential distributions. Springer Berlin Heidelberg 2020-03-19 2020 /pmc/articles/PMC7089628/ /pubmed/32226282 http://dx.doi.org/10.1140/epjc/s10052-020-7815-z Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. Funded by SCOAP3
spellingShingle Regular Article - Theoretical Physics
Buonocore, Luca
Grazzini, Massimiliano
Tramontano, Francesco
The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title_full The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title_fullStr The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title_full_unstemmed The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title_short The [Formula: see text] subtraction method: electroweak corrections and power suppressed contributions
title_sort [formula: see text] subtraction method: electroweak corrections and power suppressed contributions
topic Regular Article - Theoretical Physics
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7089628/
https://www.ncbi.nlm.nih.gov/pubmed/32226282
http://dx.doi.org/10.1140/epjc/s10052-020-7815-z
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