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

High Energy Physics - Experiment 2012-08-27 v1
Authors: 2 Collaboration , R. R. Akhmetshin , V. M. Aulchenko , V. Sh. Banzarov , L. M. Barkov , S. E. Baru , N. S. Bashtovoy , A. E. Bondar , D. V. Bondarev , A. V. Bragin , S. I. Eidelman , D. A. Epifanov , G. V. Fedotovich , N. I. Gabyshev , A. A. Grebeniuk , D. N. Grigoriev , F. V. Ignatov , S. V. Karpov , V. F. Kazanin , B. I. Khazin , I. A. Koop , P. P. Krokovny , A. S. Kuzmin , I. B. Logashenko , P. A. Lukin , A. P. Lysenko , K. Yu. Mikhailov , V. S. Okhapkin , E. A. Perevedentsev , A. S. Popov , S. I. Redin , A. A. Ruban , N. M. Ryskulov , Yu. M. Shatunov , B. A. Shwartz , A. L. Sibidanov , I. G. Snopkov , E. P. Solodov , Yu. V. Yudin
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Abstract

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).

Keywords

electron-positron annihilation cross sections kloe detector kaon physics

Cite

@article{arxiv.0804.0178,
  title  = {Measurement of e+e- -> phi -> K+K- cross section with the CMD-2 detector at VEPP-2M Collider},
  author = {2 Collaboration and R. R. Akhmetshin and V. M. Aulchenko and V. Sh. Banzarov and L. M. Barkov and S. E. Baru and N. S. Bashtovoy and A. E. Bondar and D. V. Bondarev and A. V. Bragin and S. I. Eidelman and D. A. Epifanov and G. V. Fedotovich and N. I. Gabyshev and A. A. Grebeniuk and D. N. Grigoriev and F. V. Ignatov and S. V. Karpov and V. F. Kazanin and B. I. Khazin and I. A. Koop and P. P. Krokovny and A. S. Kuzmin and I. B. Logashenko and P. A. Lukin and A. P. Lysenko and K. Yu. Mikhailov and V. S. Okhapkin and E. A. Perevedentsev and A. S. Popov and S. I. Redin and A. A. Ruban and N. M. Ryskulov and Yu. M. Shatunov and B. A. Shwartz and A. L. Sibidanov and I. G. Snopkov and E. P. Solodov and Yu. V. Yudin},
  journal= {arXiv preprint arXiv:0804.0178},
  year   = {2012}
}

Comments

12 pages, 6 figures, 2 tables, uses elsart.cls (second version - some figures are corrected)

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