Charmed particles production in pA -interactions at GeV

A. Aleev; E. Ardashev; A. Afonin; V. Balandin; S. Basiladze; G. Bogdanova; M. Bogolyubsky; M. Boguslavsky; V. Dunun; O. Gavrishchuk; S. Golovnia; S. Gorokhov; V. Golovkin; N. Grishin; Ya. Grishkevich; P. Ermolov; N. Furmanec; D. Karmanov; A. Kholodenko; V. Kireev; A. Kiriyakov; V. Konstantinov; I. Kosarev; E. Kokoulina; V. Kozlov; V. Kramarenko; A. Kubarovsky; N. Kuzmin; L. Kurchaninov; G. Lanshikov; A. Larichev; A. Leflat; S. Lyutov; M. Merkin; G. Mitrofanov; A. Moiseev; V. Nikitin; S. Orfanitsky; V. Petrov; Yu. Petukhov; A. Pleskach; V. Popov; V. Riadovikov; V. Ronjin; I. Rufanov; V. Senko; N. Shalanda; M. Soldatov; L. Tikhonova; T. Topuria; Yu. Tsyupa; M. Vasiliev; A. Vischnevskaya; V. Volkov; A. Vorobiev; A. Voronin; V. Yakimchuk; A. Yukaev; V. Zapolsky; V. Zmushko; S. Zotkin; D. Zotkin; E. Zverev

doi:10.1140/epja/i2017-12230-9

2023 Impact factor 2.6

Hadrons and Nuclei

Eur. Phys. J. A (2017) 53: 45
https://doi.org/10.1140/epja/i2017-12230-9

Regular Article - Experimental Physics

Charmed particles production in pA -interactions at $\surd s = 11.8$ GeV

SVD-2 Collaboration
A. Aleev¹, E. Ardashev², A. Afonin², V. Balandin¹, S. Basiladze³, G. Bogdanova³, M. Bogolyubsky², M. Boguslavsky¹, V. Dunun¹, O. Gavrishchuk¹, S. Golovnia², S. Gorokhov², V. Golovkin², N. Grishin³, Ya. Grishkevich³, P. Ermolov³, N. Furmanec¹, D. Karmanov³, A. Kholodenko², V. Kireev¹, A. Kiriyakov², V. Konstantinov¹, I. Kosarev¹, E. Kokoulina¹^*, V. Kozlov³, V. Kramarenko³, A. Kubarovsky³, N. Kuzmin¹, L. Kurchaninov², G. Lanshikov¹, A. Larichev³, A. Leflat³, S. Lyutov³, M. Merkin³, G. Mitrofanov², A. Moiseev², V. Nikitin¹, S. Orfanitsky³, V. Petrov², Yu. Petukhov¹, A. Pleskach², V. Popov³, V. Riadovikov², V. Ronjin², I. Rufanov¹, V. Senko², N. Shalanda², M. Soldatov², L. Tikhonova³, T. Topuria¹, Yu. Tsyupa², M. Vasiliev², A. Vischnevskaya³, V. Volkov³, A. Vorobiev², A. Voronin³, V. Yakimchuk², A. Yukaev¹, V. Zapolsky², V. Zmushko², S. Zotkin³, D. Zotkin³ and E. Zverev³

¹ Joint Institute for Nuclear Research, St. Joliot-Curie 6, 141980, Dubna, Moscow region, Russia
² Institute for High Energy Physics, Sq. Nauki 1, 142281, Protvino, Moscow region, Russia
³ Federal State Budget Educational Institution of Higher Education M.V. Lomonosov, Moscow State University, Skobeltsyn Institute of Nuclear Physics (SINP MSU), 1(2), Leninskie gory, GSP-1, 119991, Moscow, Russia

^* e-mail: kokoulin@sunse.jinr.ru

Received: 14 May 2016
Accepted: 13 February 2017
Published online: 7 March 2017

Abstract

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 $D^{0}$ , $\bar{D}^{0}$ , $D^{+}$ , $D^{-}$ 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 ( $\sigma_{\rm tot}(c\bar{c}) = 7.1 \pm 2.3({\rm stat}) \pm 1.4({\rm syst})$ μb/nucleon) at the collision c.m. energy $\surd s = 11.8$ 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.