2021-06-23
06:01 |
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2021-06-22
06:00 |
First $nK$ atom lifetime measurement and recent results from the DIRAC experiment
/ Zhabitsky, Mikhail (Dubna, JINR)
/DIRAC Collaboration
We report evidence for $\pi K$ atoms production, using 24 GeV/c proton beam from CERN PS interacting with a thin Ni target. We have identified $(178 \pm 49) \pi K$ pairs, which were produced in a bound state - $\pi K$ atom, which was subsequently broken-up (ionized) in the Ni target. [...]
DIRAC-CONF-2014-01.-
2014 - 6 p.
- Published in : EPJ Web Conf. 81 (2014) 01019
Fulltext: PDF;
In : 13th International Workshop on Meson Production, Properties and Interaction, Cracow, Poland, 29 May - 3 Jun 2014, pp.01019
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2017-10-08
06:00 |
First observation of $\pi^{-}K^+$ and $\pi^{+}K^-$ atoms, their lifetime measurement and $\pi K$ scattering lengths evaluation
/ Afanasyev, Leonid (Dubna, JINR)
/DIRAC Collaboration
The Low Energy QCD allows to calculate the ππ and π K scattering lengths with high precision. There are accurate relations between these scattering lengths and π + π − , π − K + , π + K − atoms lifetimes. [...]
DIRAC-CONF-2016-02.-
SISSA, 2016 - 6 p.
- Published in : PoS ICHEP2016 (2016) 637
Fulltext: PDF; External link: PoS server
In : 38th International Conference on High Energy Physics, Chicago, IL, USA, 03 - 10 Aug 2016, pp.637
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2017-08-10
06:48 |
The investigation of $K^+\pi^−, \pi^+K^−$ and $\pi^+\pi^−$ atoms
/ Yazkov, Valeriy (SINP, Moscow)
Theory, using Low Energy QCD, predicts with high precision the pion-pion and pion-kaon scattering lengths. There is accurate relation between $K^+\pi^−$ and $\pi^+K^-$ atoms lifetime and pion-kaon S-wave scattering lengths with isospin 1/2 and 3/2. [...]
DIRAC-CONF-2016-01.-
2016 - 6 p.
- Published in : EPJ Web Conf. 130 (2016) 01015
In : 14th International Workshop on Meson Production, Properties and Interaction, Krakow, Poland, 2 - 7 Jun 2016, pp.01015
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2017-06-21
07:22 |
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2012-09-03
16:17 |
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2011-09-06
10:20 |
Investigation of $\pi^+ \pi^-$ and $pi$K atoms at DIRAC
/ Yazkov, Valeriy (SINP, Moscow)
/DIRAC Collaboration
Measurement of $π^+π^−$ and $πK$ atom lifetimes allows to check prediction of Chiral Perturbation Theory for pion-pion scattering lengths with isospin 0 and 2, and pion-kaon scattering lengths with isospin 1/2 and 3/2. Current status of DIRAC experiment, expected results and proposal for future investigations are presented..
DIRAC-CONF-2009-02.-
2009
- Published in : PoS: CD09 (2009) , pp. 003
Published version from PoS: PDF;
In : 6th International Workshop on Chiral Dynamics, Bern, Switzerland, 6 - 10 Jul 2009, pp.003
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2011-09-06
10:14 |
Evidence for $\pi$K atoms with DIRAC
/ Benelli, A (CERN ; Zurich U.)
/DIRAC-II Collaboration
Electromagnetically bound $π^{\pm}K^{\mp}$-pairs ($πK$-atoms) have been observed by the DIRAC-II experiment at the CERN-PS. The $πK$-atoms were produced by the 24 GeV/c proton beam impinging on a thin Pt-target. [...]
DIRAC-CONF-2009-01.-
2009
- Published in : PoS: CD09 (2009) , pp. 008
Published version from PoS: PDF;
In : 6th International Workshop on Chiral Dynamics, Bern, Switzerland, 6 - 10 Jul 2009, pp.008
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2011-09-06
09:54 |
The C$_4$F$_{10}$ Cherenkov detector for DIRAC-II
/ Horikawa, S (Zurich U.) ; Allkofer, Y (Zurich U.) ; Amsler, C (Zurich U.) ; Brekhovskikh, V (Serpukhov, IHEP) ; Kuptsov, A (Dubna, JINR) ; Pentia, M (Bucharest, IFIN-HH) ; Ullaland, O (CERN) ; Zhabitsky, M (Dubna, JINR)
/DIRAC Collaboration
A new threshold Cherenkov detector using C$_4$F$_{10}$ gas radiator was built and put into operation in the DIRAC-II experiment at CERN. Running on the C$_4$F$_{10}$ at room temperature and atmospheric pressure, the detector discriminates between pions and kaons in the momentum range of 4–8GeV/$c$. [...]
DIRAC-CONF-2007-04; DIRAC-PUB-2008-04.-
2008
- Published in : Nucl. Instrum. Methods Phys. Res., A 595 (2008) 212-215
In : 6th International Workshop on Ring Imaging Cherenkov Counters, Trieste, Italy, 15 - 20 Oct 2007, pp.212-215
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2011-09-06
09:45 |
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