Back to Search Start Over

Study of ϕ→π+π−π0 with CMD-2 detector

Authors :
N.I. Root
D.A. Gorbachev
A. Bondar
Yu. M. Shatunov
D. V. Bondarev
K.Yu. Mikhailov
Igor Nesterenko
A.S. Zaitsev
A. P. Lysenko
R.R. Akhmetshin
E. P. Solodov
S.I. Eidelman
A. V. Otboev
G.V. Fedotovich
S.V. Karpov
A.V. Bragin
V.A. Sidorov
P. Krokovny
A.A. Ruban
N.M. Ryskulov
B.A. Shwartz
Fedor Ignatov
S.I. Redin
Vassili Kazanin
D. Epifanov
Yu.V. Yudin
I. Logashenko
S.G. Zverev
B.I. Khazin
A.S. Kuzmin
E.A. Perevedentsev
V.S. Okhapkin
I.G. Snopkov
L.M. Barkov
N.S. Bashtovoy
M.A. Nikulin
D.N. Grigoriev
I. A. Koop
V.M. Aulchenko
A.N. Skrinsky
A.A. Grebeniuk
P.A. Lukin
N. Gabyshev
V.Sh. Banzarov
A. I. Milstein
Vladimir Smakhtin
A.S. Popov
A.L. Sibidanov
Source :
Physics Letters B. 642:203-209
Publication Year :
2006
Publisher :
Elsevier BV, 2006.

Abstract

The cross section of the process e+e−→π+π−π0 has been measured in the c.m. energy range 984–1060 MeV with the CMD-2 detector at the VEPP-2M collider. The obtained value of Br(ϕ→e+e−)Br(ϕ→π+π−π0)=(4.51±0.16±0.11)×10−5 is in good agreement with the previous measurements and has the best accuracy. Analysis of the Dalitz plot was performed. The contributions of the dominant ϕ→ρπ mechanism as well as of a small direct ϕ→3π amplitude were determined.

Details

ISSN :
03702693
Volume :
642
Database :
OpenAIRE
Journal :
Physics Letters B
Accession number :
edsair.doi...........ffdf4f481d68152b96535bb5a33df350