Experimental estimation of the charm-production cross section in pp interactions at 70 GeV/c with the aid of the SVD setup

被引：4

作者：

Amaglobeli, NS ^{[1
]}

Ardashev, EN ^{[1
]}

Basiladze, SG ^{[1
]}

Bogdanova, GA ^{[1
]}

Bogolyubsky, MY ^{[1
]}

Boguslavsky, IV ^{[1
]}

Bulgakov, NK ^{[1
]}

Vischnevskaya, AM ^{[1
]}

Volkov, VY ^{[1
]}

Vorobiev, AP ^{[1
]}

Galyaev, NA ^{[1
]}

Gramenitsky, IM ^{[1
]}

Grishina, OV ^{[1
]}

Grishkevich, YV ^{[1
]}

Ermolov, PF ^{[1
]}

Zaitseva, OS ^{[1
]}

Zapolsky, VN ^{[1
]}

Zverev, EG ^{[1
]}

Zotkin, SA ^{[1
]}

Ivanova, NA ^{[1
]}

Karlov, GI ^{[1
]}

Kireev, VI ^{[1
]}

Kiryunin, AE ^{[1
]}

Kozlov, VV ^{[1
]}

Kramarenko, VA ^{[1
]}

Kubarovsky, AV ^{[1
]}

Kuratashvili, GO ^{[1
]}

Kurchaninov, LL ^{[1
]}

Kutov, AY ^{[1
]}

Larichev, AN ^{[1
]}

Levitsky, MS ^{[1
]}

Leflat, AK ^{[1
]}

Lyutov, SI ^{[1
]}

Medved, KS ^{[1
]}

Merkin, MM ^{[1
]}

Minaenko, AA ^{[1
]}

Moiseev, AM ^{[1
]}

Nedev, S ^{[1
]}

Orfanitsky, SV ^{[1
]}

Pleskach, AV ^{[1
]}

Popov, AI ^{[1
]}

Popov, VV ^{[1
]}

Prosin, BV ^{[1
]}

Ruzin, SM ^{[1
]}

Rukovichkin, VP ^{[1
]}

Rybnikov, VM ^{[1
]}

Ryadovikov, VN ^{[1
]}

Samsonov, VA ^{[1
]}

Selikov, AV ^{[1
]}

Tevzadze, YV ^{[1
]}

机构：

[1] Moscow MV Lomonosov State Univ, Inst Nucl Phys, Moscow 119899, Russia

来源：

PHYSICS OF ATOMIC NUCLEI | 2001年 / 64卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/1.1378879

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Charmed-particle production in pp interactions at 70 GeV/c was studied with the SVD setup at Mice IHEP accelerator (Protvino). The experimental procedure used and the data-selection methods are described. Data obtained by using a quickly cycling bubble chamber and a magnetic spectrometer are analyzed. The number of inelastic-interaction clients recorded in the chamber is 109 000, with the charge multiplicity being n(ch) greater than or equal to 4. The corresponding statistics are 4.96 event/mub. Part of the events were recorded in the magnetic spectrometer. Three three-prong decays of charged particles near the primary vertex are round on the films, two of these being recorded with the spectrometer. All three are interpreted as D- decays. Two neutral decays observed simultaneously in the chamber and in the spectrometer are interpreted as (D) over bar (0) decays. The total cross section for c (c) over bar production in the Feynman variable region -1 < x(F) < + 1 is estimated at sigma (c (c) over bar) = 1.6(-0.7)(+1.1) (stat.) +/- 0.3 (syst.) mub. The cross-section values and the mean values < \x(F)\> and <p(perpendicular to)> for D mesons are compared with other experimental results in the energy range 58-800 GeV. The data of this experiment are compatible with the cross-section estimates obtained in the beam-dump experiment at 70 GeV and with those predicted by perturbative QCD. (C) 2001 MAIK "Nauka/Interperiodica".

引用

页码：891 / 901

页数：11

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