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arXiv 1004.3676hep-ex
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用SVD-2装置在70 GeV记录pA-interactions中中性粲介子的产生和衰变

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, V. Ejov, G. Ermakov, P. Ermolov, N. Furmanec, S. Golov… 展开作者

1A. Aleev, E. Ardashev, A. Afonin, V. Balandin, S. Basiladze, S. Berezhnev, G. Bogdanova, M. Bogolyubsky, 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

备注：
8 pages, 10 figures, XXXIX International Symposium on Multiparticle Dynamics (ISMD) (Gomel, Belorussia). http://ismd2009.hep.by
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摘要：

本文介绍了用70 GeV质子束辐照碳、硅和铅靶的E-184实验的数据处理结果。选择了中性粲D_0和粲D_0介子衰变的两个分支。信号/背景比为（51+/-17）/（38+/-13）。定义了介子的登记效率，并给出了阈能下粲产生截面的计算结果：σ（粲）= 7.1 +/- 2.4（stat.）+/- 1.4（系统）（μ/核子）。

英文摘要：

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 Ď0 -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(cĉ) = 7.1 +/- 2.4(stat.) +/- 1.4(syst.) (μ/nucleon).

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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