Analysis of π0 , KS0 , and η fragmentation functions using single-inclusive annihilation data including BESIII measurements

IF 5 2区物理与天体物理 Q1 Physics and Astronomy

Physical Review D Pub Date : 2025-02-19 DOI:10.1103/physrevd.111.034030

Mengyang Li, Daniele Paolo Anderle, Hongxi Xing, Yuxiang Zhao

{"title":"Analysis of π0 , KS0 , and η fragmentation functions using single-inclusive annihilation data including BESIII measurements","authors":"Mengyang Li, Daniele Paolo Anderle, Hongxi Xing, Yuxiang Zhao","doi":"10.1103/physrevd.111.034030","DOIUrl":null,"url":null,"abstract":"This study presents a quantum chromodynamics (QCD) analysis of fragmentation functions (FFs) for neutral pions (π</a:mi>0</a:mn></a:msup></a:math>), neutral kaons (<c:math xmlns:c=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><c:msubsup><c:mi>K</c:mi><c:mi>S</c:mi><c:mn>0</c:mn></c:msubsup></c:math>), and eta mesons (<e:math xmlns:e=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><e:mi>η</e:mi></e:math>), utilizing world data of single-inclusive hadron production in <g:math xmlns:g=\"http://www.w3.org/1998/Math/MathML\" display=\"inline\"><g:msup><g:mi>e</g:mi><g:mo>+</g:mo></g:msup><g:msup><g:mi>e</g:mi><g:mo>−</g:mo></g:msup></g:math> annihilation involving the most recent BESIII data with low collision energy, to test the operational region of QCD collinear factorization for single-inclusive hadron production. We found that the QCD-based analysis at next-to-next-to-leading order in perturbative QCD with parametrized higher-twist effects can explain both existing high-energy world data and the BESIII new measurements, while the latter cannot be explained with existing FFs extracted with high-energy data. To investigate the higher-twist contributions to this discrepancy, a direct functional approach is employed, providing a testing framework for characterizing the experimental results over a wide range of energy scales, from low to high, thus extending the classical theoretical models to the BESIII domain. Published by the American Physical Society 2025 ","PeriodicalId":20167,"journal":{"name":"Physical Review D","volume":"130 1","pages":""},"PeriodicalIF":5.0000,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review D","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/physrevd.111.034030","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Physics and Astronomy","Score":null,"Total":0}

引用次数: 0

Abstract

This study presents a quantum chromodynamics (QCD) analysis of fragmentation functions (FFs) for neutral pions (π0), neutral kaons (KS0), and eta mesons (η), utilizing world data of single-inclusive hadron production in e+e− annihilation involving the most recent BESIII data with low collision energy, to test the operational region of QCD collinear factorization for single-inclusive hadron production. We found that the QCD-based analysis at next-to-next-to-leading order in perturbative QCD with parametrized higher-twist effects can explain both existing high-energy world data and the BESIII new measurements, while the latter cannot be explained with existing FFs extracted with high-energy data. To investigate the higher-twist contributions to this discrepancy, a direct functional approach is employed, providing a testing framework for characterizing the experimental results over a wide range of energy scales, from low to high, thus extending the classical theoretical models to the BESIII domain.

Published by the American Physical Society

2025

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Physical Review D 物理-天文与天体物理

CiteScore

9.20

自引率

36.00%

发文量

审稿时长

2 months

期刊介绍： Physical Review D (PRD) is a leading journal in elementary particle physics, field theory, gravitation, and cosmology and is one of the top-cited journals in high-energy physics. PRD covers experimental and theoretical results in all aspects of particle physics, field theory, gravitation and cosmology, including: Particle physics experiments, Electroweak interactions, Strong interactions, Lattice field theories, lattice QCD, Beyond the standard model physics, Phenomenological aspects of field theory, general methods, Gravity, cosmology, cosmic rays, Astrophysics and astroparticle physics, General relativity, Formal aspects of field theory, field theory in curved space, String theory, quantum gravity, gauge/gravity duality.