$Υ(1S)-->γ(η',η,f_2(1270))$ decays

Details $Υ(1S)-->γ(η',η,f_2(1270))$ decays $Υ(1S)-->γ(η',η,f_2(1270))$ decays

2009-09-22

arxiv.org/abs/0909.4002v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages. To be published in the proceedings of DPF - 2009, Detroit, MI, July 2009, eConf C090726

Scientific paper

$\Upsilon(1s)\to\gamma(\eta',\eta, f_2(1270))$ are studied by an approach in which the glueball components of these mesons play dominant role. Strong dependence on quark mass has been found in the decays $(J/\psi, \Upsilon(1s))\to\gamma(\eta',\eta)$. Very small decay rates of $\Upsilon(1s)\to\gamma(\eta',\eta)$ are predicted. d-wave dominance has been found in $\Upsilon(1s)\to\gamma f_2(1270)$, which leads to larger $B(\Upsilon(1s)\to\gamma f_2(1270)).$

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