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Charmed particles production in pA-interactions at root s=3D11.8 GeV

Author:
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.  Grishkevich, Ya.  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.  Petukhov, Yu.  Pleskach, A.  Popov, V.  Riadovikov, V.  Ronjin, V.  Rufanov, I.  Senko, V.  Shalanda, N.  Soldatov, M.  Tikhonova, L.  Topuria, T.  Tsyupa, Yu.  Vasiliev, M.  Vischnevskaya, A.  Volkov, V.  Vorobiev, A.  Voronin, A.  Yakimchuk, V.  Yukaev, A.  Zapolsky, V.  Zmushko, V.  Zotkin, S.  Zotkin, D.  Zverev, E.  


Journal:
EUROPEAN PHYSICAL JOURNAL A


Issue Date:
2017


Abstract(summary):

The results of the SERP-E-184 experiment at the U-70 accelerator (IHEP, Protvino) are presented. Interactions of the 70 GeV proton beam with carbon, silicon and lead targets were studied to detect decays of charmed D-0, (D) over bar (0), D+, D- mesons and Lambda(+)(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 (sigma(tot)(c (c) over bar) =3D 7.1 +/- 2.3(stat) +/- 1.4(syst) mu b/nucleon) at the collision c.m. energy root s =3D 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.


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