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DIRAC Notes

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2024-02-16
12:13
The investigation of the Coulomb interaction in $\pi^+ \pi^-$ pair production and application of the effect to the event simulation and setup description / Benelli, A. (CTU, Prague) ; Nemenov, L. (JINR, Dubna) ; Pentia, M. (IFIN-HH, Bucharest) ; Smolik, J. (CTU, Prague)
In this work we present the Coulomb effects in the π +π − pair analysis and show the application of these effects in high energy physics investigations. [...]
DIRAC-NOTE-2023-01. - 2023. - 16 p.
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2021-06-16
09:00
Identification and analyses of $K^+K^−$ pairs / Benelli, A. ; Smolik, J. ; Yazkov, V.
DIRAC-NOTE-2020-01. - 2020. - 14 p.
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2021-06-16
08:57
A constructive way to calculate a yield of $π^+π^ −$-atoms from the Be target / Zhabitsky, M. (Dubna, JINR)
This note describes details of a constructive approach to calculate with sufficient precision a yield of $π^+π^−$-atoms from the Be target..
DIRAC-NOTE-2018-02. - 2019. - 4 p.
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2021-06-16
08:49
Fractions of $K^+K^−$ pairs with $K^+$ or $K^−$ mesons from the resonance decays in pp interactions at 24 GeV/$c$ / Chliapnikov, P. V. (Serpukhov, IHEP)
The Coulomb $K^+K^−$ correlations might be sensitive to non point-like $K^+K^−$ pair production due to influence of kaons from decays of resonances with relatively small widths [...]
DIRAC-NOTE-2018-01. - 2018. - 4 p.
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2017-02-14
09:49
The estimation of production rates of $K^+ K^−$ and $p\bar{p}$ atoms in proton-nucleus interactions at 450 GeV/c / Gorchakov, O ; Nemenov, L
DIRAC-Note-2016-07. - 2016. - 11 p.
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2017-02-14
09:33
An improved $\pi$K atom lifetime measurement / Yazkov, V (SINP, Moscow) ; Zhabitsky, M (Dubna, JINR)
This note describes details of analysis of data samples collected by DIRAC experiment on a Pt target in 2007 and Ni targets in 2008–2010 in order to estimate the lifetime of πK atoms. [...]
DIRAC-Note-2016-06. - 2016. - 9 p.
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2016-08-11
14:06
Estimation of beam time needed for measurement of pion-kaon s-wave scattering length combination $a_{\bar{0}}$ with a statistical accuracy 5% / Yazkov, V (SINP, Moscow)
Measurement of s-wave pion-kaon scattering length combina tion $a_{\bar{0}} = 1/3( a^{1/2}_0 − a^{3/2}_0)$ with an accuracy 5% provides check of prediction made by Chir al Perturbation theory and Lattice QCD. [...]
DIRAC-Note-2016-05. - 2016. - 14 p.
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2016-08-11
14:03
The estimation of production rates of $π^+ K^−, π^− K^+$ and $π^+π^−$ atoms in proton-nucleus interactions at 24 and 450 GeV/c / Gorchakov, O ; Nemenov, L
Short-lived ( τ ∼ 3 × 10 − 15 s ) π + K − , K + π − and π + π − atoms as well as long-lived ( τ ≥ 1 × 10 − 11 s) π + π − atoms produced in proton-nucleus interactions at 24 GeV/c are observed and studied in the DIRAC experiment at the CERN P S. [...]
DIRAC-Note-2016-04. - 2016. - 19 p.

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2016-08-11
14:00
Update in the SFD detector response simulation / Benelli , A (Dubna, JINR) ; Yazkov, V (SINP, Moscow)
DIRAC-Note-2016-03. - 2016. - 12 p.
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2016-03-09
09:27
Update in the Multiple Scattering description of the SFD detector in Geant-Dirac / Benelli , A (Dubna, JINR) ; Yazkov, V (SINP, Moscow)
DIRAC-Note-2016-02. - 2016. - 5 p.
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