Kavli Affiliate: Wei Gao
| First 5 Authors: BESIII Collaboration, BESIII Collaboration, , ,
| Summary:
Using data samples with a total integrated luminosity of 253 $rm pb^-1$ collected by the BESIII detector operating at the BEPCII collider, the differential cross-sections of inclusive $π^pm$ and $K^pm$ production, as a function of momentum and normalized by the total hadronic cross-section, are measured at center-of-mass energies from 2.000 to 3.671 GeV. The measured $π^pm$ cross sections are consistent with the previously reported $π^0$ cross-sections by BESIII, while the $K^pm$ cross sections are systematically higher than the $K^0_S$ cross sections by a factor of approximately 1.4. These new results are in agreement with state-of-the-art QCD analyses at next-to-next-to-leading order accuracy, particularly in the large hadron momentum region at energy scales down to 3 GeV. These findings support the validity of isospin symmetry in parton fragmentation processes.
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