Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userThe $phitoetapi^0gamma$ decay
171
0
0.0
(
0
)
Ask ChatGPT about the research
No Arabic abstract
Rare radiative decay $phitoetapi^0gamma$ was studied with SND detector at {VEPP-2M} electron-positron collider and its branching ratio was measured: $B(phitoetapi^0gamma)=(0.88pm0.14pm0.09)cdot 10^{-4}$. Significant contribution of the $a_0(980)gamma$ intermediate state was observed in the decay. The result is based on total integrated luminosity corresponding to $2cdot10^7$ produced $phi$ mesons.
rate research
Read More
In the SND experiment at VEPP-2M $e^+e^-$ collider the $phi(1020)topi^0pi^0gamma$ decay was studied and its branching ratio was measured: $B(phitopi^0pi^0gamma)=(1.221pm 0.098pm0.061)cdot10^{-4}$. It was shown, that $f_0(980)gamma$ intermediate state dominates in this decay and the $f_0(980)$-meson parameters were obtained.
The cross section of the $e^+e^-toomegapi^0topi^0pi^0gamma$ reaction was measured by the SND detector at VEPP-2M $e^+e^-$ collider in the energy range from threshold up to 1.4 GeV. Results of the cross section fitting by the sum of $rho$, $rho^{prime}$ and $rho^{primeprime}$ contributions are presented.
We investigate the feasibility of studying in-medium properties of the $omega$ meson in photoproduction experiments via the decay $omegarightarrowpi^0gamma$. We use the GiBUU transport model to compare different methods of obtaining in-medium information, such as the invariant mass spectrum, transparency ratio, excitation function and momentum spectrum. We show that the final-state interaction of the pion poses a major obstacle for the interpretation of the invariant mass spectrum. The other three observables turn out to be fairly independent of final-state interactions and thus can give access to the $omega$s in-medium properties.
The process $e^+e^- to pi^0gamma$ has been studied in the experiment with the SND detector at the VEPP-2M $e^+e^-$ collider. The $e^+e^- to pi^0gamma$ cross section has been measured in the center-of-mass energy range from 0.60 to 1.38 GeV. The cross section is well described by the vector meson dominance model. From the fit to the cross section data we have determined the branching fractions $B(rhotopi^0gamma)=(4.20pm0.52)times10^{-4}$, $B(omegatopi^0gamma)=(8.88pm0.18)%$, $B(phitopi^0gamma)=(1.367pm0.072)times10^{-3}$, and the relative phase between the $rho$ and $omega$ amplitudes $varphi_{rho}=(-12.7pm4.5)^circ$. Our data on the process $e^+e^- to pi^0gamma$ are the most accurate to date.
The process $e^+e^- to pi^0gamma$ is studied with the SND detector at the VEPP-2000 $e^+e^-$ collider. Basing on data with an integrated luminosity of 41 pb$^{-1}$ recorded in 2010-2012 we measure the $e^+e^- to pi^0gamma$ cross section in the center-of-mass energy range from 1.075 up to 2 GeV. In the range 1.4-2.0 GeV the process $e^+e^- to pi^0gamma$ is studied for the first time.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
