I. Boyko
Joint Institute for Nuclear Research
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Featured researches published by I. Boyko.
European Physical Journal C | 2010
A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; A. Elagin; D. Emelyanov; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; Yu. Nefedov; K. Nikolaev; Alexey Zhemchugov; F. Dydak; J. Wotschack; A. De Min; V. Ammosov; V. Gapienko; V. Koreshev; A. Semak; Yu. M. Sviridov; E. Usenko; V. Zaets
We report on the comparison of production characteristics of secondary protons and charged pions in the interactions of protons and charged pions with momentum between 3xa0GeV/c and 15xa0GeV/c with beryllium, copper, and tantalum nuclei, with simulations by the FLUKA program and the Geant4 tool kit. Overall production cross-sections are reasonably well reproduced, within factors of two. In more detail, there are areas with poor agreement that are unsatisfactory and call for modelling improvements. Overall, the current FLUKA simulation fares better than the current Geant4 simulation.
Physical Review D | 2012
A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; Andrey Elagin; D. Emelyanov; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; Yu. Nefedov; K. Nikolaev; A. Zhemchugov; F. Dydak; J. Wotschack; A. De Min; V. Ammosov; V. Gapienko; V. Koreshev; A. Semak; Yu. M. Sviridov; E. Usenko; V. Zaets
This paper, together with a subsequent paper, questions the so-called LSND anomaly: a 3.8 {sigma} excess of anti-electronneutrino interactions over standard backgrounds, observed by the LSND Collaboration in a beam dump experiment with 800 MeV protons. That excess has been interpreted as evidence for the anti-muonneutrino{to} anti-electronneutrino oscillation in the {Delta}m2 range from 0.2 eV2 to 2 eV2. Such a {Delta}m2 range is incompatible with the widely accepted model of oscillations between three light neutrino species and would require the existence of at least one light sterile neutrino. In this paper, new data on pion production by protons on nuclei are presented, and four decades old data on pion production by neutrons on nuclei are recalled, that together increase significantly the estimates of standard backgrounds in the LSND experiment, and decrease the significance of the LSND anomaly from 3.8 {sigma} to 2.9 {sigma}. In a subsequent paper, in addition the LSND Collaborations data analysis will be questioned, rendering a further reduction of the significance of the LSND anomaly.
European Physical Journal C | 2011
A. Bolshakova; J. Wotschack; V. Zaets; A. Elagin; Yu. Nefedov; Z.V. Kroumchtein; V. Ammosov; A. Guskov; F. Dydak; V. Koreshev; I. Boyko; G. A. Chelkov; E. Usenko; A. Zhemchugov; A. Semak; D. Dedovitch; K. Nikolaev; Yu. M. Sviridov; V. Gapienko; A. De Min; M. I. Gostkin
We report on double-differential inclusive cross-sections of the production of secondary protons, charged pions, and deuterons, in the interactions with a 5% λint thick stationary tin target, of proton and pion beams with momentum from ±3xa0GeV/c to ±15xa0GeV/c. Results are given for secondary particles with production angles 20○<θ<125○. Cross-sections on tin nuclei are compared with cross-sections on beryllium, carbon, copper, tantalum and lead nuclei.
Physical Review D | 2012
A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; Andrey Elagin; D. Emelyanov; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; Yu. Nefedov; K. Nikolaev; A. Zhemchugov; F. Dydak; J. Wotschack; A. De Min; V. Ammosov; V. Gapienko; V. Koreshev; A. Semak; Yu. M. Sviridov; E. Usenko; V. Zaets
This paper, together with a preceding paper, questions the so-called ``LSND anomaly: a
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2008
V. Ammosov; A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; F. Dydak; A. Elagin; V. Gapienko; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; V. Koreshev; L. Linssen; A. De Min; Yu. Nefedov; K Nikolaev; A. Semak; Yu. M. Sviridov; E. Usenko; J. Wotschack; V. Zaets; Alexey Zhemchugov
3.8ensuremath{sigma}
European Physical Journal C | 2010
A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; A. Elagin; D. Emelyanov; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; Yu. Nefedov; K. Nikolaev; A. Zhemchugov; F. Dydak; J. Wotschack; Alberto De Min; V. Ammosov; V. Gapienko; V. Koreshev; A. Semak; Yu. M. Sviridov; E. Usenko; V. Zaets
excess of
arXiv: High Energy Physics - Experiment | 2011
A. Bolshakova; I. Boyko; G. A. Chelkov; D. Dedovitch; A. Elagin; D. Emelyanov; M. I. Gostkin; A. Guskov; Z.V. Kroumchtein; Yu. Nefedov; K. Nikolaev; A. Zhemchugov; F. Dydak; J. Wotschack; Alberto De Min; V. Ammosov; V. Gapienko; V. Koreshev; A. Semak; Yu. M. Sviridov; E. Usenko; V. Zaets
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