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Measurement of D*+/- diffractive cross sections in photoproduction at HERA

I. A. Korzhavina
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Abstract

The first measurement of D*+/- meson diffractive photoproduction cross sections has been performed with the ZEUS detector at the HERA $ep$ collider, using an integrated luminosity of 38 pb^-1. The measurement has been performed for photon--proton center-of-mass energies in the range 130 < W < 280 GeV and photon virtualities Q^2 < 1 GeV^2. D*+/- mesons have been reconstructed with p_T(D*)>2 GeV and -1.5<η(D*)<1.5 from the decay channel D*+ --> D^0 π^+_s with D^0 --> K-π^+ (+c.c.). The diffractive component has been selected with 0.001 e'D*Xp') = 0.74 +/- 0.21 (stat.)^{+0.27}_{-0.18} (syst.) +/-0.16 (p. diss.) ~nb (ZEUS preliminary). Measured integrated and differential cross sections have been compared to theoretical expectations.

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I. A. Korzhavina. 2001-03-04. Measurement of D*+/- diffractive cross sections in photoproduction at HERA. https://doi.org/10.1134/1.1451937

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