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V. Vrba

Joint Institute for Nuclear Research

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Featured researches published by V. Vrba.

Nuclear Physics | 1978

Inclusive ϱ0 production in pp interactions at 22.4 GeV/c

D.I. Ermilova; V.V. Filippova; V. V. Samojlov; T. Temiraliev; B. Batyunya; I. V. Boguslavsky; I. M. Gramenitsky; R. Lednický; L. A. Tikhonova; A. Valkarova; V. Vrba; Z. Zlatanov; J. Ervanne; E. Hannula; S. Ljung; R. Orava; H. Villanen; P. Villanen; J. Patočka; R. K. Dementiev; E. M. Leikin; T. Garanina; N. A. Pozhidaeva; V. I. Rud; J. Žáček; J. Cvach; I. Herynek; P. Reimer; Vladislav Simak

Abstract Inclusive ϱ 0 production has been investigated in p p reactions at 22.4 GeV/ c . The total cross section for ϱ 0 production is 8.1 ± 2.0 mb. The average ϱ 0 s per event is 0.17 ± 0.03. The average transverse momentum, as obtained by extrapolation of a fitted simple exponential to the p T 2 distribution, is 0.52 ± 0.12 GeV/ c . The Feynman x and c.m. rapidity distributions show ϱ 0 to be “centrally” produced.

Physics Letters B | 1979

Experimental verification of the dual unitarization scheme

B. Batyunya; M. Suk; A. M. Khudzhadze; V. V. Samoilov; Z. Zlatanov; E. G. Boos; V. D. Tsintsadze; P. Villanen; T. Temiralev; A. Valkárová; R.K. Dementev; I. V. Boguslavsky; J. Ervanne; V. Simak; L. A. Tikhonova; T.P. Topuriya; P. Reimer; J. Sedlak; V. V. Filippova; I. M. Gramenitsky; H. Villanen; V. Vrba; D. I. Ermilova; J. Ridky; R. Lednicky; A.G. Pavlova; E. M. Leikin; S. Dumbrajs-Ljung; V. I. Rud; V.E. Grechko

Abstract The connection between particle production in antiproton-proton annihilation and non-diffractive proton-proton processes is discussed in the framework of the dual unitarization scheme. We calculate relative multiplicity moments for antiproton-proton annihilation using the moments of non-diffractive proton-proton interactions and find good agreement with experimental annihilation data.

Czechoslovak Journal of Physics | 1981

Observation of the dependence of the interference effect of identical pions on pion pair velocity in inclusive ¯pp-interactions at 22·4 GeV/c

B. Batyunya; I. V. Boguslavsky; I. M. Gramenitsky; R. Lednický; L. A. Tikhonova; A. Valkárová; V. Vrba; Z. Zlatanov; S. V. Levonian; D. I. Ermilova; V. V. Filippova; Zh. S. Takibaev; T. Temiraliev; S. Dumbrajs; J. Ervanne; E. Hannula; P. Villanen; R. K. Dementiev; I. A. Korzhavina; E. M. Leikin; V. I. Rud; M. Suk; I. Herynek; P. Reimer; J. Řídký; V. Šimák; A.M. Khudzadze; G. O. Kuratashvili; T. P. Topuriya; V. D. Tsintsadze

The Bose-Einstein interference effect is studied using 7333 events of ¯pp-interactions withnch≧6 at 22·4 GeV/c. An essential dependence of the strength of this effect on the pion pair velocity is observed. An indication is obtained that processes with essentially different time characteristics (τ<1 fm and τ>2 fm) contribute to ¯pp-interactions at 22·4 GeV/c. The interpretation based on abundant resonance production in high energy collisions is discussed.

Nuclear Physics | 1979

Inclusive production of Δ++ (1236) in pp interactions at 22.4 GeV/c

E.G. Boos; D.I. Ermilova; V. Filipova; V. V. Samojlov; M. Zhanbosinova; T. Temiraliev; B.V. Batunya; I. V. Boguslavsky; I. M. Gramenitsky; R. Lednický; S.M. Takibaev; L. A. Tikhonova; A. Valkarova; V. Vrba; I. Ervanne; E. Hannula; S. Ljung; R. Orava; H. Villanen; P. Villanen; P. K. Dementiev; E. M. Leikin; V.E. Grechko; L.A. Ponomarev; N. A. Pozhidaeva; V. I. Rud; M. Suk; J. Žáček; J. Cvach; I. Herynek

Abstract The inclusive and semi-inclusive production of Δ ++ (1236) is investigated in p p interactions at 22.4 GeV/ c . The Δ ++ cross section is 1.78 ± 0.18 mb in the region of | t p Δ | ⩽ 0.74 (GeV/ c ) 2 . The differential cross section has been studied as a function of transverse and longitudinal variables. Evidence for the one-pion exchange contribution to the Δ ++ inclusive process has been obtained from the decay angular distributions of the Δ ++ .

European Physical Journal C | 1982

Inelastic\(\bar p\)p interactions at 22.4 GeV/c compared withe+e− annihilation into hadrons

E.G. Boos; D. I. Ermilova; V. V. Samoilov; T. Temiraliev; B. Batyunya; I. V. Boguslavsky; N. B. Dashian; I. M. Gramenitsky; R. Lednický; S. V. Levonian; V. Vrba; Z. Zlatanov; E. Hannula; P. Villanen; J. Patočka; R. K. Dementiev; I. A. Korzhavina; E. M. Leikin; A. G. Pyzyrny; V. I. Rud; L. A. Tikhonova; I. Herynek; M. Lokajíček; J. Řídký; V. Simak; M. Suk; A. Valkárová; A. M. Khudzhadze; G. O. Kuratashvili; T. P. Topuriya

AbstractThe 22.4 GeV/cn

Nuclear Physics | 1980

Inclusive and semi-inclusive production of positive pions and protons in pp interactions at 22.4 GeV/c

E.G. Boos; D.I. Ermilova; V. V. Samojlov; T. Temiraliev; B. Batyunya; I. V. Boguslavsky; N. B. Dashian; I. M. Gramenitsky; R. Lednický; S. V. Levonian; L. A. Tikhonova; A. Valkarova; V. Vrba; Z. Zlatanov; S. Dumbrajs; J. Ervanne; E. Hannula; P. Villanen; R. K. Dementiev; I. A. Korzhavina; E. M. Leikin; V. I. Rud; I. Herynek; O. Křepelová; P. Reimer; J. Řídký; V. Simak; M. Suk; A.M. Khudzadze; G. O. Kuratashvili

Nuclear Physics | 1987

Study of ϱ0 meson spin alignment in pp and pp interactions

B. Batyunya; I. V. Boguslavsky; R. K. Dementiev; I. M. Gramenitsky; I. Herynek; Ch. Kanazirski; I. A. Korzhavina; G. O. Kuratashvili; R. Lednicky; E. M. Leikin; R. Leitner; S. V. Levonian; P. Murin; V. I. Rud; V. Šimák; P. Staroba; M. Suk; L.A. Tikhonova; T. P. Topuriya; A. Valkárová; P. Villanen; V. Vrba; E. Walck; B.M. Whyman; Z. Zlatanov

bar p

Nuclear Physics | 1977

Charge asymmetry at large pT in inelastic pp reactions at 22.4 GeV/c

E.G. Boos; V.V. Filippova; Zh.S. Takibaev; T. Temiraliev; B. Batyunya; I. V. Boguslavsky; N.A. Buzdavina; I. M. Gramenitsky; V.G. Ivanov; R. Lednicky; L. A. Tikhonova; T. P. Topuriya; A. Valkarova; V. Vrba; Z. Zlatanov; J. Ervanne; S. Ljung; R. Orava; H. Villanen; P. Villanen; J. Patočka; R.K. Dementev; T. Garanina; E. M. Leikin; N. A. Pozhidaeva; V. I. Rud; L. Rob; J. Žáček; J. Chýla; J. Cvach

Nuclear Physics | 1977

Inclusive rho0 Production in anti-p p Interactions at 22.4-GeV/c

D.I. Ermilova; J. Patočka; V.V. Samoilov; Z. Zlatanov; P. Villanen; T. Temiralev; A. Valkarova; R.K. Dementev; N. A. Pozhidaeva; I. V. Boguslavsky; J. Ervanne; V. Simak; L. A. Tikhonova; T. P. Topuriya; B. Batyunya; P. Reimer; S. Ljung; J. Cvach; V.V. Filippova; J. Zacek; I. M. Gramenitsky; H. Villanen; V. Vrba; R. Lednicky; T. Garanina; R. Orava; E. M. Leikin; V. I. Rud; I. Herynek; E. Hannula

np interactions with the leading particle and the slow proton subtracted are used as data on soft processes. Considerable similarity between them and hard processes, such ase+e− annihilation into hadrons, is found by means of studying charged multiplicities, KNO scaling and longitudinal as well as transverse spectra.

European Physical Journal C | 1984

InclusiveK s 0 , Λ and\(\bar \Lambda\)-production in\(\bar p\)p-interactions at 22.4 GeV/c

B. Batyunya; I. V. Boguslavsky; I. M. Gramenitsky; R. Lednický; V. Vrba; E.G. Boos; D. I. Ermilova; V. V. Samoilov; T. Temiraliev; P. Villanen; E. Walck; R. K. Dementiev; I. A. Korzhavina; E. M. Leikin; V. I. Rud; L. A. Tikhonova; S. V. Levonian; I. Herynek; M. Lokajíček; J. Řídký; V. Šimák; M. Suk; A. Valkárová; G. O. Kuratashvili; T. P. Topuriya; V. D. Tsintsadze

New results on the inclusive and semi-inclusive production of π+ mesons and protons in the whole phase space are given for about 2.2 · 104 inelastic pp interactions at 22.4 GeV/c. A method of statistical separation for spectra of particles of the same charge which are produced in CP-symmetrical reactions is discussed in detail. Experimental data are compared with quark-parton model predictions.

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