Measurement of ω meson parameters in π+π−π0 decay mode with CMD-2

R. R. Akhmetshin,E. V. Anashkin,V. Aulchenko,V.Sh. Banzarov,L. M. Barkov,S. E. Baru,N.S. Bashtovoy,A. Bondar,D.V. Bondarev,D. V. Chernyak,S. Eidelman,G. V. Fedotovich,N. Gabyshev,A. A. Grebeniuk,D. N. Grigoriev,B. I. Khazin,I. A. Koop,L.M. Kurdadze,A.S. Kuzmin,I. B. Logashenko,P. Lukin,A. P. Lysenko,I. N. Nesterenko,V.S. Okhapkin,E. A. Perevedentsev,A. A. Polunin,T. A. Purlatz,N. Root,A.A. Ruban,N.M. Ryskulov,A. G. Shamov,Yu. M. Shatunov,A. I. Shekhtman,A. Sher,B. Shwartz,V. Sidorov,A.N. Skrinsky,V.P. Smakhtin,I. G. Snopkov,E. P. Solodov,P. Yu. Stepanov,A.I. Sukhanov,V.M. Titov,A. A. Valishev,Yu.V. Yudin,S. G. Zverev,J. Thompson,S. Dhawan,V.W. Hughes

Measurement of ω meson parameters in π+π−π0 decay mode with CMD-2

2000

Abstract About 11 200 e + e − → ω → π + π − π 0 events selected in the center of mass energy range from 760 to 810 MeV were used for the measurement of the ω meson parameters. The following results have been obtained: σ 0 =(1457±23±19) nb, m ω =(782.71±0.07±0.04) MeV/c 2 , Γ ω =(8.68±0.23±0.10) MeV, Γ e + e − ·Br( ω → π + π − π 0 )=(0.528±0.012±0.007)·10 −3 MeV.

Keywords:

Meson
Particle physics
Center of mass
Physics

Correction
Cite
Save
Machine Reading By IdeaReader

References

Citations