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Updated measurement of the e+e−→ωπ0→π0π0γ cross section with the SND detector
- 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.
- Subjects :
- Physics
Particle physics
010308 nuclear & particles physics
Electron–positron annihilation
Vector meson dominance
01 natural sciences
Omega
law.invention
Nuclear physics
Cross section (physics)
law
0103 physical sciences
Radiative transfer
High Energy Physics::Experiment
Vector meson
010306 general physics
Collider
Energy (signal processing)
Subjects
Details
- ISSN :
- 24700029 and 24700010
- Volume :
- 94
- Database :
- OpenAIRE
- Journal :
- Physical Review D
- Accession number :
- edsair.doi...........7430216bd795beccaf5d16134cb2bd3a