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Charm production in deep inelastic e p scattering was measured with the ZEUS detector using an integrated luminosity of 354 pb(-1). Charm quarks were identified by reconstructing D-+/- mesons in the D-+/- -> K--/+pi(+/-)pi(+/-) decay channel. Lifetime information was used to reduce combinatorial background substantially. Differential cross sections were measured in the kinematic region 5 < Q(2) < 1000 GeV2, 0.02 < y < 0.7, 1.5 < p(T)(D-+/-) < 15 GeV and vertical bar eta(D-+/-)vertical bar < 1.6, where Q(2) is the photon virtuality, y is the inelasticity, and p(T)(D-+/-) and eta(D-+/-) are the transverse momentum and the pseudorapidity of the D-+/- meson, respectively. Next-to-leading-order QCD predictions are compared to the data. The charm contribution, F-2(c (c) over bar), to the proton structure-function F-2 was extracted.

Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA / H., A., I., A., L., A., M., A., R., A., S., A., P., A., A., A., M., A., O., A., V., A., Y., A., O., B., A., B., A. N., B., G., B., G., B., F., B., N., B., D., B., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2013:5(2013). [10.1007/jhep05(2013)023]

Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA

D'AGOSTINI, Giulio;NIGRO, Andrea;
2013

Abstract

Charm production in deep inelastic e p scattering was measured with the ZEUS detector using an integrated luminosity of 354 pb(-1). Charm quarks were identified by reconstructing D-+/- mesons in the D-+/- -> K--/+pi(+/-)pi(+/-) decay channel. Lifetime information was used to reduce combinatorial background substantially. Differential cross sections were measured in the kinematic region 5 < Q(2) < 1000 GeV2, 0.02 < y < 0.7, 1.5 < p(T)(D-+/-) < 15 GeV and vertical bar eta(D-+/-)vertical bar < 1.6, where Q(2) is the photon virtuality, y is the inelasticity, and p(T)(D-+/-) and eta(D-+/-) are the transverse momentum and the pseudorapidity of the D-+/- meson, respectively. Next-to-leading-order QCD predictions are compared to the data. The charm contribution, F-2(c (c) over bar), to the proton structure-function F-2 was extracted.
2013
heavy quark production; lepton-nucleon scattering
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of D ± production in deep inelastic ep scattering with the ZEUS detector at HERA / H., A., I., A., L., A., M., A., R., A., S., A., P., A., A., A., M., A., O., A., V., A., Y., A., O., B., A., B., A. N., B., G., B., G., B., F., B., N., B., D., B., et al.. - In: JOURNAL OF HIGH ENERGY PHYSICS. - ISSN 1029-8479. - 2013:5(2013). [10.1007/jhep05(2013)023]
01a Articolo in rivista
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/610787
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