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arXiv · 1106.1563

Properties of Neutral Charmed Mesons in Proton--Nucleus Interactions at 70 GeV

2 Collaboration·A. N. Aleev·E. N. Ardashev·A. G. Afonin·V. P. Balandin·S. G. Basiladze·S. F. Berezhnev·G. A. Bogdanova·M. Yu. Bogolyubsky·A. M. Vishnevskaya·V. Yu. Volkov·A. P. Vorobiev·A. G. Voronin·G. G. Ermakov·P. F. Ermolov·S. N. Golovnia·S. A. Gorokhov·V. F. Golovkin·N. I. Grishin·Ya. V. Grishkevich·V. N. Zapolsky·E. G. Zverev·S. A. Zotkin·D. S. Zotkin·D. E. Karmanov·V. I. Kireev·A. A. Kiriakov·V. N. Kramarenko·A. V. Kubarovsky·N. A. Kouzmine·L. L. Kurchaninov·G. I. Lanshikov·A. K. Leflat·S. I. Lyutov·M. M. Merkin·G. Ya. Mitrofanov·V. S. Petrov·Yu . P. Petukhov·A. V. Pleskach·V. V. Popov·V. M. Ronjin·V. N. Ryadovikov·D. V. Savrina·V. A. Senko·M. M. Soldatov·L. A. Tikhonova·N. F. Furmanec·A. G. Kholodenko·Yu. P. Tsyupa·N. A. Shalanda·A. I. Yukaev·V. I. Yakimchuk
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Abstract

The results of treatment of data obtained in the SERP-E-184experiment "Investigation of mechanisms of the production of charmed particles in proton-nucleus interactions at 70 GeV and their decays" by irradiating the active target of the SVD-2 facility consisting of carbon, silicon, and lead plates, are presented. After separating a signal from the two-particle decay of neutral charmed mesons and estimating the cross section for charm production at a threshold energy σ(cč)=7.1 \pm 2.4(stat.) \pm 1.4(syst.) \mub/nucleon, some properties of D mesons are investigated. These include the dependence of the cross section on the target mass number (its A dependence); the behavior of the differential cross sections dσ/dpt2 and dσ/dxF; and the dependence of the parameter α on the kinematical variables xF, pt2, and plab. The experimental results in question are compared with predictions obtained on the basis of the FRITIOF7.02 code.

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2 Collaboration, A. N. Aleev, E. N. Ardashev, A. G. Afonin, V. P. Balandin, S. G. Basiladze, S. F. Berezhnev, G. A. Bogdanova, M. Yu. Bogolyubsky, A. M. Vishnevskaya, V. Yu. Volkov, A. P. Vorobiev, A. G. Voronin, G. G. Ermakov, P. F. Ermolov, S. N. Golovnia, S. A. Gorokhov, V. F. Golovkin, N. I. Grishin, Ya. V. Grishkevich, V. N. Zapolsky, E. G. Zverev, S. A. Zotkin, D. S. Zotkin, D. E. Karmanov, V. I. Kireev, A. A. Kiriakov, V. N. Kramarenko, A. V. Kubarovsky, N. A. Kouzmine, L. L. Kurchaninov, G. I. Lanshikov, A. K. Leflat, S. I. Lyutov, M. M. Merkin, G. Ya. Mitrofanov, V. S. Petrov, Yu . P. Petukhov, A. V. Pleskach, V. V. Popov, V. M. Ronjin, V. N. Ryadovikov, D. V. Savrina, V. A. Senko, M. M. Soldatov, L. A. Tikhonova, N. F. Furmanec, A. G. Kholodenko, Yu. P. Tsyupa, N. A. Shalanda, A. I. Yukaev, V. I. Yakimchuk. 2011-06-08. Properties of Neutral Charmed Mesons in Proton--Nucleus Interactions at 70 GeV. https://doi.org/10.1134/s1063778811020189

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