Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA
(2013) Journal of High Energy Physics (Print) — Vol. 2013, n° 5 (2013)
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- Charm production in deep inelastic ep scattering was measured with the ZEUS detector using an integrated luminosity of 354 pb<sup>-1</sup>. Charm quarks were identified by reconstructing D<sup>±</sup> mesons in the D <sup>±</sup> → K<sup>∓</sup>π<sup>±</sup>π <sup>±</sup> decay channel. Lifetime information was used to reduce combinatorial background substantially. Differential cross sections were measured in the kinematic region 5 < Q <sup>2</sup> < 1000 GeV <sup>2</sup>, 0.02 < y < 0.7, 1.5 < p <inf>T</inf> (D <sup>±</sup>) < 15 GeV and |η(D <sup>±</sup>)| < 1.6, where Q <sup>2</sup> is the photon virtuality, y is the inelasticity, and p <inf>T</inf> (D <sup>±</sup>) and η(D <sup>±</sup>) are the transverse momentum and the pseudorapidity of the D <sup>±</sup> meson, respectively. Next-to-leading-order QCD predictions are compared to the data. The charm contribution, F<inf>2</inf> <sup>cc̄</sup>, to the proton structure-function F <inf>2</inf> was extracted. © 2013 SISSA.
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Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aggarwal, R., Antonelli, S., Antonioli, P., Antonov, A., Arneodo, M., Arslan, O., Aushev, V., Aushev, Y., Bachynska, O., Bamberger, A., Barakbaev, A. N., Barbagli, G., Bari, G., Barreiro, F., Bartosik, N., et al. (2013). Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA. Journal of High Energy Physics (Print), 2013(5). https://doi.org/10.1007/JHEP05(2013)023 (Original work published 2013)