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 |
|---|---|
| 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): |  Creative Commons - CC BY - Namensnennung 4.0 International |
