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arxiv: 2411.12216 · v2 · pith:QOSV76F3new · submitted 2024-11-19 · ✦ hep-ex

Production cross sections of light and charmed mesons in e^+e^- annihilation near 10.58 GeV

Belle Collaboration: R. Seidl , I. Adachi , H. Aihara , T. Aushev , R. Ayad , Sw. Banerjee , K. Belous , J. Bennett
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classification ✦ hep-ex
keywords crosssectionsmesonsmeasurementsproductionbellecomparedfragmentation
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We report measurements of production cross sections for $\rho^+$, $\rho^0$, $\omega$, $K^{*+}$, $K^{*0}$, $\phi$, $\eta$, $K_S^0$, $f_0(980)$, $D^+$, $D^0$, $D_s^+$, $D^{*+}$, $D^{*0}$, and $D^{*+}_s$ in $e^+e^-$ collisions at a center-of-mass energy near 10.58 GeV. The data were recorded by the Belle experiment, consisting of 571 fb$^{-1}$ at 10.58 GeV and 74 fb$^{-1}$ at 10.52 GeV. Production cross sections are extracted as a function of the fractional hadron momentum $x_p$ . The measurements are compared to {\sc pythia} Monte Carlo generator predictions with various fragmentation settings, including those that have increased fragmentation into vector mesons over pseudo-scalar mesons. The cross sections measured for light hadrons are consistent with no additional increase of vector over pseudo-scalar mesons. The charmed-meson cross sections are compared to earlier measurements -- when available -- including older Belle results, which they supersede. They are in agreement before application of an improved initial-state radiation correction procedure that causes slight changes in their \xp shapes.

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