Charmed particles production in pA -interactions at √ s = 11 . 8 GeV

The results of the SERP-E-184 experiment at the U-70 accelerator (IHEP, Protvino) are presented. Interactions of the 70GeV proton beam with carbon, silicon and lead targets were studied to detect decays of charmed D 0 , D ¯ 0 , D + , D - mesons and Λ c + baryon near their production threshold. Measu...

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Veröffentlicht in:	The European physical journal. A, Hadrons and nuclei Hadrons and nuclei, 2017-03, Vol.53 (3), p.1-8
Hauptverfasser:	Aleev, A, Ardashev, E, Afonin, A, Balandin, V, Basiladze, S, Bogdanova, G, Bogolyubsky, M, Boguslavsky, M, Dunun, V, Gavrishchuk, O, Golovnia, S, Gorokhov, S, Golovkin, V, Grishin, N, Ya. Grishkevich, Ermolov, P, Furmanec, N, Karmanov, D, Kholodenko, A, Kireev, V, Kiriyakov, A, Konstantinov, V, Kosarev, I, Kokoulina, E, Kozlov, V, Kramarenko, V, Kubarovsky, A, Kuzmin, N, Kurchaninov, L, Lanshikov, G, Larichev, A, Leflat, A, Lyutov, S, Merkin, M, Mitrofanov, G, Moiseev, A, Nikitin, V, Orfanitsky, S, Petrov, V, Yu. Petukhov, Pleskach, A, Popov, V, Riadovikov, V, Ronjin, V, Rufanov, I, Senko, V, Shalanda, N, Soldatov, M, Tikhonova, L, Topuria, T, Yu. Tsyupa, Vasiliev, M, Vischnevskaya, A, Volkov, V, Vorobiev, A, Voronin, A, Yakimchuk, V, Yukaev, A, Zapolsky, V, Zmushko, V, Zotkin, S, Zotkin, D, Zverev, E
Format:	Artikel
Sprache:	eng
Schlagworte:	Nuclear cross sections Proton beams
Online-Zugang:	Volltext
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Zusammenfassung:	The results of the SERP-E-184 experiment at the U-70 accelerator (IHEP, Protvino) are presented. Interactions of the 70GeV proton beam with carbon, silicon and lead targets were studied to detect decays of charmed D 0 , D ¯ 0 , D + , D - mesons and Λ c + baryon near their production threshold. Measurements of lifetimes and masses have shown a good agreement with PDG data. The inclusive cross-sections of charm production and their A-dependences have been obtained. The yields of these particles are compared with the theoretical predictions and the data of other experiments. The measured cross-section of the total open charm production ( σ tot ( c c ¯ ) = 7 . 1 ± 2 . 3 ( stat ) ± 1 . 4 ( syst ) μb/nucleon) at the collision c.m. energy √ s = 11 . 8 GeV is well above the QCD model predictions. The contributions of different kinds of charmed particles to the total cross-section of the open charm production in proton-nucleus interactions vary with energy.
ISSN:	1434-6001 1434-601X
DOI:	10.1140/epja/i2017-12230-9