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Publication
Featured researches published by P. Chliapnikov.
Physics Letters B | 2011
Bernardo Adeva; J.M. Rodriguez; J. Marin; K. Kuroda; P. Chliapnikov; G. Caragheorgheopol; C. Petrascu; A. Penzo; D. Drijard; C. Ciocarlan; A. Lopez Aguera; A. I. Kulikov; J. Kluson; C. Willmott; A. Pazos; F. Gomez; A. Lanaro; V. Yazkov; A. Lamberto; Richard Lednicky; M. Zhabitsky; T. Nunez Pardo; O. Voskresenskaya; M. V. Gallas Torreira; V. Kruglov; L. Kruglova; T. Ponta; P. Levi Sandri; Z. Hons; T. Trojek
The DIRAC experiment at CERN has achieved a sizeable production of + atoms and has significantly improved the precision on its lifetime determination. From a sample of 21227 atomic pairs, a 4% measurement of the S-wave scattering length di erence ja0 a2j = 0:2533 +0:0080 0:0078 stat
Physics Letters B | 2009
Bernardo Adeva; Y. Allkofer; C. Amsler; A. Anania; A. Benelli; V. Brekhovskikh; G. Caragheorgheopol; T. Cechak; M. Chiba; P. Chliapnikov; C. Ciocarlan; S. Constantinescu; C. Curceanu; C. Detraz; D. Dreossi; D. Drijard; A. Dudarev; M. Duma; D. Dumitriu; J.L. Fungueiriño; J. Gerndt; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; M. Iliescu
Abstract We present evidence for the first observation of electromagnetically bound π ± K ∓ -pairs (πK-atoms) with the DIRAC experiment at the CERN-PS. The πK-atoms are produced by the 24 GeV / c proton beam in a thin Pt-target and the π ± and K ∓ -mesons from the atom dissociation are analyzed in a two-arm magnetic spectrometer. The observed enhancement at low relative momentum corresponds to the production of 173 ± 54 πK-atoms. The mean life of πK-atoms is related to the s-wave πK-scattering lengths, the measurement of which is the goal of the experiment. From these first data we derive a lower limit for the mean life of 0.8 fs at 90% confidence level.
Physics Letters B | 2014
Bernardo Adeva; L. Kruglova; C. Mariñas; T. Ponta; M. Kobayashi; A. Romero Vidal; C. Amsler; Shigeki Sugimoto; M. Plo; Aldo Penzo; Z. Hons; D. Drijard; T. Trojek; C. Ciocarlan; A.M. Gorin; V. Brekhovskikh; S. Trusov; Yoshihisa Iwashita; S. Horikawa; S. Aogaki; J. Schacher; Alexander V. Sidorov; J. Kluson; K. Gritsay; A. Ryazantsev; Y. Yoshimura; M. Pentia; Y. Allkofer; K. Okada; M. Gugiu
The results of a search for hydrogen-like atoms consisting of π∓K±π∓K± mesons are presented. Evidence for πK atom production by 24 GeV/c protons from CERN PS interacting with a nickel target has been seen in terms of characteristic πK pairs from their breakup in the same target (178±49178±49) as well as in terms of produced πK atoms (653±42653±42). Using these results, the analysis yields a first value for the πK atom lifetime of View the MathML sourceτ=(2.5−1.8+3.0) fs and a first measurement of the S-wave isospin-odd πK scattering length View the MathML source|a0−|=13|a1/2−a3/2|=(0.11−0.04+0.09)Mπ−1 (aIaI for isospin I).
Physical Review D | 2017
Bernardo Adeva; L. Kruglova; C. Mariñas; M. Kobayashi; A. Romero Vidal; C. Amsler; M. Plo; L. Tauscher; A. Penzo; Z. Hons; D. Drijard; T. Trojek; A.M. Gorin; V. Brekhovskikh; S. Trusov; Yoshihisa Iwashita; S. Horikawa; S. Aogaki; J. Schacher; P. Federicova; Alexander V. Sidorov; J. Kluson; K. Gritsay; A. Ryazantsev; Y. Yoshimura; M. Pentia; Y. Allkofer; K. Okada; M. Gugiu; V.I. Rykalin
After having announced the statistically significant observation (5.6~
Physical Review Letters | 2016
Bernardo Adeva; L. Kruglova; A. Romero Vidal; C. Mariñas; M. Kobayashi; C. Amsler; M. Plo; L. Tauscher; A. Penzo; Z. Hons; D. Drijard; T. Trojek; A.M. Gorin; V. Brekhovskikh; S. Trusov; Yoshihisa Iwashita; S. Horikawa; S. Aogaki; Alexander V. Sidorov; J. Kluson; K. Gritsay; A. Ryazantsev; Y. Yoshimura; M. Pentia; Y. Allkofer; K. Okada; M. Gugiu; V.I. Rykalin; T. Cechak; P. Chliapnikov
\sigma
Physics Letters B | 2015
Bernardo Adeva; A. Anania; S. Aogaki; A. Benelli; V. Brekhovskikh; T. Cechak; M. Chiba; P. Chliapnikov; P. Doskarova; D. Drijard; A. Dudarev; M. Duma; D. Dumitriu; D. Fluerasu; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Yoshihisa Iwashita; V. Karpukhin; J. Kluson; M. Kobayashi; V. Kruglov; L. Kruglova; A. I. Kulikov; E. Kulish
) of the new exotic
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2016
Bernardo Adeva; Y. Allkofer; C. Amsler; A. Anania; S. Aogaki; A. Benelli; V. Brekhovskikh; G. Caragheorgheopol; T. Cechak; M. Chiba; P. Chliapnikov; C. Ciocarlan; S. Constantinescu; C. Detraz; P. Doskarova; D. Drijard; A. Dudarev; M. Duma; D. Dumitriu; D. Fluerasu; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Yoshihisa Iwashita; V. Karpukhin
\pi K
Physical Review Letters | 2016
Bernardo Adeva; Y. Allkofer; C. Amsler; A. Anania; S. Aogaki; A. Benelli; Brekhovskikh; T. Cechak; M. Chiba; P. Chliapnikov; P. Doskarova; D. Drijard; A. Dudarev; D. Dumitriu; D. Fluerasu; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Yoshihisa Iwashita; Karpukhin; J. Kluson; M. Kobayashi; Kruglov; L. Kruglova; A. I. Kulikov
atom, the DIRAC experiment at the CERN proton synchrotron presents the measurement of the corresponding atom lifetime, based on the full
Physical Review Letters | 2016
Bernardo Adeva; Y. Allkofer; C. Amsler; A. Anania; S. Aogaki; A. Benelli; Brekhovskikh; T. Cechak; M. Chiba; P. Chliapnikov; P. Doskarova; D. Drijard; A. Dudarev; D. Dumitriu; D. Fluerasu; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Yoshihisa Iwashita; Karpukhin; J. Kluson; M. Kobayashi; Kruglov; L. Kruglova; A. I. Kulikov
\pi K
Physical Review Letters | 2016
Bernardo Adeva; Y. Allkofer; C. Amsler; A. Anania; S. Aogaki; A. Benelli; V. Brekhovskikh; T. Cechak; M. Chiba; P. Chliapnikov; P. Doskarova; D. Drijard; A. Dudarev; D. Dumitriu; D. Fluerasu; A.M. Gorin; O. Gorchakov; K. Gritsay; C. Guaraldo; M. Gugiu; M. Hansroul; Z. Hons; S. Horikawa; Yoshihisa Iwashita; V. Karpukhin; J. Kluson; M. Kobayashi; V. Kruglov; L. Kruglova; A. I. Kulikov
data sample:
