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

V. F. Golovkin; S. N. Golovnia; S. A. Gorokhov; N. I. Grishin; Ya. V. Grishkevich; G. G. Ermakov; P. F. Ermolov; I. N. Erofeeva; V. N. Zapolsky; E. G. Zverev; D. E. Karmanov; V. I. Kireev; A. A. Kiriakov; V. N. Kramarenko; A. V. Kubarovsky; N. A. Kouzmine; L. L. Kurchaninov; G. I. Lanshikov; A. K. Leflat; M. M. Merkin; G. Ya. Mitrofanov; V. S. Petrov; Yu. P. Petukhov; A. V. Pleskach; V. V. Popov; V. M. Ronjin; V. N. Ryadovikov; V. A. Senko; M. M. Soldatov; L. L. Tikhonova; N. F. Furmanec; A. G. Kholodenko; Yu. P. Tsyupa; N. A. Shalanda; A. I. Yukaev; V. I. Yakimchuk; V. N. Ryadovikov; A. N. Aleev; E. N. Ardashev; A. G. Afonin; V. P. Balandin; S. G. Basiladze; S. F. Berezhnev; G. A. Bogdanova; M. Yu. Bogolyubsky; A. M. Vischnevskaya; V. Yu. Volkov; A. P. Vorobiev; A. G. Voronin

doi:10.1134/S1063778816020150

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

Authors: Golovkin V.F.¹, Golovnia S.N.¹, Gorokhov S.A.¹, Grishin N.I.², Grishkevich Y.V.², Ermakov G.G.², Ermolov P.F.², Erofeeva I.N.², Zapolsky V.N.¹, Zverev E.G.², Karmanov D.E.², Kireev V.I.³, Kiriakov A.A.¹, Kramarenko V.N.², Kubarovsky A.V.², Kouzmine N.A.³, Kurchaninov L.L.¹, Lanshikov G.I.³, Leflat A.K.², Merkin M.M.², Mitrofanov G.Y.¹, Petrov V.S.¹, Petukhov Y.P.³, Pleskach A.V.¹, Popov V.V.¹, Ronjin V.M.¹, Ryadovikov V.N.¹, Senko V.A.¹, Soldatov M.M.¹, Tikhonova L.L.², Furmanec N.F.³, Kholodenko A.G.¹, Tsyupa Y.P.¹, Shalanda N.A.¹, Yukaev A.I.³, Yakimchuk V.I.¹, Ryadovikov V.N.³, Aleev A.N.³, Ardashev E.N.¹, Afonin A.G.¹, Balandin V.P.³, Basiladze S.G.², Berezhnev S.F.², Bogdanova G.A.², Bogolyubsky M.Y.¹, Vischnevskaya A.M.², Volkov V.Y.², Vorobiev A.P.¹, Voronin A.G.²
Affiliations:
1. Institute for High Energy Physics
2. Skobeltsyn Institute of Nuclear Physics
3. Joint Institute for Nuclear Research
Issue: Vol 79, No 2 (2016)
Pages: 144-154
Section: Elementary Particles and Fields
URL: https://journals.rcsi.science/1063-7788/article/view/189760
DOI: https://doi.org/10.1134/S1063778816020150
ID: 189760

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Abstract

The results of an analysis of data from the SERP-Е-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_c⁺ baryons. After selecting a signal from the threebody decay of a Λ_c⁺ 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_c⁺ -baryon yields are tabulated along with data from other experiments and theoretical predictions.

Keywords

Atomic Nucleus, Total Cross Section, Simulated Event, Dalitz Plot, Nucleus Interaction

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

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Abstract

Keywords

About the authors

Supplementary files