Subscribe to the gold package and get unlimited access to Shamra Academy
Register a new userHadronic three-body decays of light vector mesons
418
0
0.0
(
0
)
Authors
S. Leupold
Ask ChatGPT about the research
No Arabic abstract
The decays of light vector mesons into three pseudoscalar mesons are calculated to leading order in the recently proposed counting scheme that is based on the hadrogenesis conjecture. Fully differential as well as integrated decay widths are presented. Since the required parameters have been fixed by other processes, the considered three-body decays are predictions of the presented approach. The decay width of the omega meson into three pions agrees very well with experiment. The partial decay widths of the K^* into its three K-pi-pi channels are predicted.
rate research
Read More
The new data on $rho,omega,phi$ radiative decays into $pi^0gamma,etagamma,etagamma$ from SND experiment at VEPP-2M $e^+e^-$ collider are presented.
Results are presented on the study of three body decays of D0 -> K0s h+ h-, where h=pi/K and DS+ -> K0S K0S pi+. The data have been collected by the BaBar experiment at SLAC and are extracted from continuum e+ e- annihilations at the Upsilon(4S) energy.
Using a total of 2.74 x 10^7 decays of the psi(2S) collected with the CLEO-c detector, we present a study of chi_cJ -> gamma V, where V = rho^0, omega, phi. The transitions chi_c1 -> gamma rho^0 and chi_c1 -> gamma omega are observed with B(chi_c1 -> gamma rho^0) = (2.43 +- 0.19 +- 0.22) x 10^-4 and B(chi_c1 -> gamma omega) = (8.3 +- 1.5 +- 1.2) x 10^-5. In the chi_c1 -> gamma rho^0 transition, the final state meson is dominantly longitudinally polarized. Upper limits on the branching fractions of other chi_cJ states to light vector mesons are presented.
With an extended quark pair creation model we systematically study the OZI-allowed three body open flavor decays of higher vector charmonium and bottomonium states. We obtain that the $BB^*pi$ and $B^*B^*pi$ partial decay widths of $Upsilon(10860)$ are consistent with experiment, and the corresponding partial decay widths of $Upsilon(11020)$ can reach up to 2$sim$3 MeV. Meanwhile the partial widths of $DD^*pi$ and $D^*D^*pi$ modes for most higher vector charmonium states can reach up to several MeV.
Within the framework of covariant confined quark model, we compute the transition form factors of $D$ and $D_s$ mesons decaying to light scalar mesons $f_0(980)$ and $a_0(980)$. The transition form factors are then utilized to compute the semileptonic branching fractions. We study the channels namely, $D_{(s)}^+ to f_0(980) ell^+ u_ell$ and $D to a_0(980) ell^+ u_ell$ for $ell = e$ and $mu$. For computation of semileptonic branching fractions, we consider the $a_0(980)$ meson to be the conventional quark-antiquark structure and the $f_0(980)$ meson as the admixture of $sbar{s}$ and light quark-antiquark pairs. Our findings are found to support the recent BESIII data.
Log in to be able to interact and post comments
comments
Fetching comments
Sign in to be able to follow your search criteria
