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Updated measurement of the e+e−→ωπ0→π0π0γ cross section with the SND detector

Authors :
A. A. Botov
V. P. Druzhinin
L. V. Kardapoltsev
Dmitry Berkaev
M. N. Achasov
E. V. Pakhtusova
A. N. Kirpotin
V. B. Golubev
Yu. M. Shatunov
A.N. Skrinsky
A. V. Berdyugin
Yu. A. Rogovsky
Ivan Koop
I. K. Surin
A. A. Korol
S. I. Serednyakov
A. S. Kasaev
A. Yu. Barnyakov
T. V. Dimova
Dmitry Shtol
A. V. Vasiljev
A. I. Senchenko
D. B. Shwartz
A. E. Obrazovsky
S. V. Koshuba
Konstantin Beloborodov
Alexander Bogdanchikov
Alexey Kharlamov
Z. K. Silagadze
D. P. Kovrizhin
K. A. Martin
Source :
Physical Review D. 94
Publication Year :
2016
Publisher :
American Physical Society (APS), 2016.

Abstract

We analyze a 37 pb$^{-1}$ data sample collected with the SND detector at the VEPP-2000 $e^+e^-$ collider in the center-of-mass energy range 1.05--2.00 GeV and present an updated measurement of the $e^+e^- \to \omega \pi^0 \to \pi^0\pi^0\gamma$ cross section. In particular, we correct the mistake in radiative correction calculation made in our previous measurement based on a part of the data. The measured cross section is fitted with the vector meson dominance model with three $\rho$-like states and used to test the conserved vector current hypothesis in the $\tau^-\to\omega\pi^-\nu_{\tau}$ decay.

Details

ISSN :
24700029 and 24700010
Volume :
94
Database :
OpenAIRE
Journal :
Physical Review D
Accession number :
edsair.doi...........7430216bd795beccaf5d16134cb2bd3a