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

Abstract

We report measurements of production cross sections for ${\rho }^{+}$, ${\rho }^0$, $\omega$, $K^{\ast +}$, $K^{\ast 0}$, $\varphi$, $\eta$, $K_S^0$, $f_0(980)$, $D^{+}$, $D^0$, $D_s^{+}$, $D^{\ast +}$, $D^{\ast 0}$, and $D_s^{\ast +}$ 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.

arXiv comment21 pages, 18 figures, published in Phys. Rev. D

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Cited by in corpus (2)

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