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P. A. Lukin

Publications and source records attributed to P. A. Lukin.

29 records · Page 2Linked to original sources
arXiv2016

Measurement of the $e^+e^- \to K^+K^-π^+π^-$ cross section with the CMD-3 detector at the VEPP-2000 collider

The process $e^+e^- \to K^+K^-π^+π^-$ has been studied in the center-of-mass energy range from 1500 to 2000\,MeV using a data sample of 23 pb$^{-1}$ collected with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using about 24000 selected events, the $e^+e^- \to K^+K^-π^+π^-$ cross section has been measured with a systematic uncertainty decreasing from 11.7\% at 1500-1600\,MeV to 6.1\% above 1800\,MeV. A preliminary study of $K^+K^-π^+π^-$ production dynamics has been performed.

hep-ex↗
arXiv2015

Mini-Proceedings, 17th meeting of the Working Group on Radiative Corrections and MC Generators for Low Energies

The mini-proceedings of the 17$^{\mathrm{th}}$ Meeting of the "Working Group on Radiative Corrections and MonteCarlo Generators for Low Energies" held in Frascati, 20$^{\mathrm{th}}$ - 21$^{\mathrm{st}}$ April, are presented. These meetings, started in 2006, have as aim to bring together experimentalists and theoreticians working in the fields of meson transition form factors, hadronic contributions to the anomalous magnetic moment of the leptons, and the effective fine structure constant. The development of MonteCarlo generators and Radiative Corrections for precision $e^+e^-$ and $τ$-lepton physics are also covered, with emphasis on meson production. Heavy quark masses were covered as well in this edition.

hep-ph↗
arXiv2014

Mini-Proceedings, 16th meeting of the Working Group on Radiative Corrections and MC Generators for Low Energies

The mini-proceedings of the 16th Meeting of the "Working Group on Radiative Corrections and MonteCarlo Generators for Low Energies" held in Frascati, 18th - 19th November, are presented. These meetings, started in 2006, have as aim to bring together experimentalists and theoreticians working in the fields of meson transition form factors, hadronic contributions to the anomalous magnetic moment of the leptons, and the effective fine structure constant. The development of MonteCarlo generators and Radiative Corrections for precision $e^+e^-$ and τ-lepton physics are also covered.

hep-ph↗
arXiv2014

Search for the process $e^+e^-\to η^\prime(958)$ with the CMD-3 detector

A search for the process $\epem\to η^\prime(958)$ in the $\pipiη\to\pipiγγ$ final state has been performed with the CMD-3 detector at the VEPP-2000 $e^+e^-$ collider. Using an integrated luminosity of 2.69 pb$^{-1}$ collected at the center-of-mass energy \Ecm = 957.68 MeV we set an upper limit for the product of electronic width and branching fractions $Γ_{η^\prime(958)\to\epem}\cdot\BR_{η^\prime(958)\to\pipiη}\cdot\BR_{η\toγγ}<0.00041$ eV at 90\% C.L.

hep-ex↗
arXiv2014

Mini-Proceedings of the 15th meeting of the Working Group on Rad. Corrections and MC Generators for Low Energies

The mini-proceedings of the 15th Meeting of the "Working Group on Rad. Corrections and MC Generators for Low Energies" held in Mainz on April 11, 2014, are presented. These meetings, started in 2006, have as aim to bring together experimentalists and theorists working in the fields of meson transition form factors, hadronic contributions to $(g-2)_μ$ and the effective fine structure constant, and development of Monte Carlo generators and Radiative Corrections for precision e+e- and tau physics.

hep-ph↗
arXiv2010

Measurement of $ϕ$(1020) meson leptonic width with CMD-2 detector at VEPP-2M Collider

The $ϕ$(1020) meson leptonic width has been determined from the combined analysis of 4 major decay modes of the resonance ($ϕ\to K^+ K^-,K^0_LK^0_S,π^+π^-π^0,ηγ$) studied with the CMD-2 detector at the VEPP-2M $e^+e^-$ collider. The following value has been obtained: $Γ(ϕ\to e^+e^-) = 1.235\pm 0.006\pm 0.022$ keV. The $ϕ(1020)$ meson parameters in four main decay channels have been also recalculated: $B(ϕ\to K^+K^-) = 0.493\pm 0.003\pm 0.007$, $B(ϕ\to K_LK_S) = 0.336\pm 0.002\pm 0.006$, $B(ϕ\toπ^+π^-π^0) = 0.155\pm 0.002\pm 0.005$, $B(ϕ\toηγ) = 0.0138\pm 0.0002\pm 0.0002$.

hep-ex↗
arXiv2008

Measurement of e+e- -> phi -> K+K- cross section with the CMD-2 detector at VEPP-2M Collider

The process e+ e- -> phi -> K+ K- has been studied with the CMD-2 detector using about 542 000 events detected in the center-of-mass energy range from 1.01 to 1.034 GeV. The systematic error of the cross section is estimated to be 2.2%. The phi(1020) meson parameters in the phi -> K+K- decay channel have been measured: sigma_0(phi-> K+K-) = 2016 +- 8 +- 44 nb, m(phi) = 1019.441 +- 0.008 +- 0.080 MeV/c2, Gamma(phi) = 4.24 +- 0.02 +- 0.03 MeV, B(e+e-)B(K+K-) = (14.27 +- 0.05 +- 0.31)*10(-5).

hep-ex↗
arXiv2003

Reanalysis of Hadronic Cross Section Measurements at CMD-2

The updated results of the precise measurements of the processes e+e-->rho->pi+pi-, e+e-->omega->pi+pi-pi0 and e+e-->phi->KLKS performed by the CMD-2 collaboration are presented. The update appeared necessary due an overestimate of the integrated luminosity in previous analyses.

hep-ex↗