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arxiv 1004.3676 v1 pith:SEGCSYAK submitted 2010-04-21 hep-ex

Registration of neutral charmed mesons production and their decays in pA-interactions at 70 GeV with SVD-2 setup

1A. Aleev , E. Ardashev , A. Afonin , V. Balandin , S. Basiladze , S. Berezhnev , G. Bogdanova , M. Bogolyubsky
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V. Ejov G. Ermakov P. Ermolov N. Furmanec S. Golovnia S. Gorokhov V. Golovkin N. Grishin Ya. Grishkevich D. Karmanov A. Kholodenko V. Kireev A. Kiriakov N. Kouzmine V. Konstantinov V. Kramarenko A. Kubarovsky L. Kurchaninov G. Lanshikov A. Leflat S. Lyutov M. Merkin G. Mitrofanov V. Petrov Yu. Petukhov A. Pleskach V. Popov V. Riadovikov V. Ronjin D. Savrina V. Senko N. Shalanda M. Soldatov L. Tikhonova T. Topuria Yu. Tsyupa A. Vischnevskaya V. Volkov A. Vorobiev A. Voronin V. Yakimchuk A. Yukaev V. Zapolsky S. Zotkin D. Zotkin E. Zverev
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classification hep-ex
keywords mesonscharmeddecaysneutralpresentedproductionregistrationactive
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The results of data handling for E-184 experiment obtained with 70 GeV proton beam irradiation of active target with carbon, silicon and lead plates are presented. Two-prongs neutral charmed D0 and \v{D}0 -mesons decays were selected. Signal / background ratio was (51+/-17) / (38+/-13). Registration efficiency for mesons was defined and evaluation for charm production cross section at threshold energy is presented: sigma(c\^c) = 7.1 +/- 2.4(stat.) +/- 1.4(syst.) (\mu/nucleon).

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