Measurements of normalized differential cross sections of inclusive η production in e⁺e⁻ annihilation at energy from 2.0000 to 3.6710 GeV
- Using data samples collected with the BESIII detector operating at the BEPCII storage ring, the cross section of the inclusive process e+e−→η+X, normalized by the total cross section of e+e−→hadrons, is measured at eight center-of-mass energy points from 2.0000 GeV to 3.6710 GeV. These are the first measurements with momentum dependence in this energy region. Our measurement shows a significant discrepancy from calculations with the existing fragmentation functions. To address this discrepancy, a new QCD analysis is performed at the next-to-next-to-leading order with hadron mass corrections and higher twist effects, which can explain both the established high-energy data and our measurements reasonably well.
URN: | urn:nbn:de:hebis:30:3-845561 |
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URL: | https://arxiv.org/abs/2401.17873v1 |
DOI: | https://doi.org/10.48550/arXiv.2401.17873 |
Parent Title (English): | arXiv |
Publisher: | arXiv |
Document Type: | Preprint |
Language: | English |
Date of Publication (online): | 2024/01/31 |
Date of first Publication: | 2024/01/31 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Creating Corporation: | BESIII Collaboration |
Release Date: | 2024/06/18 |
Issue: | 2401.17873v1 |
Edition: | Version 1 |
Page Number: | 9 |
Institutes: | Physik / Physik |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Sammlungen: | Universitätspublikationen |
Licence (German): | ![]() |