Measurement of the production cross section for charmed baryons in proton–nucleus interactions at 70 GeV

Journal Article · Tue Mar 15 04:00:00 EDT 2016 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778816020150· OSTI ID:22612698

Aleev, A. N. ^[1]; Ardashev, E. N.; Afonin, A. G. ^[2]; Balandin, V. P. ^[1]; Basiladze, S. G.; Berezhnev, S. F.; Bogdanova, G. A. ^[3]; Bogolyubsky, M. Yu. ^[2]; Vischnevskaya, A. M.; Volkov, V. Yu. ^[3]; Vorobiev, A. P. ^[2]; Voronin, A. G. ^[3]; Golovkin, V. F.; Golovnia, S. N.; Gorokhov, S. A. ^[2]; Grishin, N. I.; Grishkevich, Ya. V.; Ermakov, G. G.; Ermolov, P. F. ^[3]; others, and

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1. Joint Institute for Nuclear Research (Russian Federation)
2. National Research Center Kurchatov Institute, Institute for High Energy Physics (Russian Federation)
3. Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation)

The results of an analysis of data from the SERP-E-184 experiment devoted to studying mechanisms of the production of charmed particles in proton–nucleus interactions at 70 GeV and their decays are presented. The data in question were obtained upon irradiating the SVD-2 active target consisting of carbon, silicon, and lead plates with a beam of 70-GeV protons. A detailed simulation on the basis of the FRITIOF7.02 and GEANT3.21 code packages made it possible to optimize event-selection criteria and to calculate the detection efficiency for Λ{sub c}{sup +} baryons. After selecting a signal from the threebody decay of a Λ{sub c}{sup +} baryon, the inclusive cross section for its production at near-threshold energies, its lifetime, and the parameter of the A dependence of the cross section were found. The Λ{sub c}{sup +} -baryon yields are tabulated along with data from other experiments and theoretical predictions.

• OSTI ID: 22612698
• Journal Information: Physics of Atomic Nuclei, Journal Name: Physics of Atomic Nuclei Journal Issue: 2 Vol. 79; ISSN 1063-7788; ISSN PANUEO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
CARBON
CHARMED BARYONS
COMPUTERIZED SIMULATION
CROSS SECTIONS
DATA ANALYSIS
DETECTION
GEV RANGE 10-100
LEAD
PROTON BEAMS
PROTON-NUCLEON INTERACTIONS
PROTONS
SILICON
THRESHOLD ENERGY