On the observation of the isospin breaking decay $\Upsilon(10860)\to\Upsilon(1S)f_0(980)\to\Upsilon(1S)\eta\pi^0$ with the Belle II detector
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DOI: 10.1103/physrevd.96.091501
Abstract: Using the Belle data on the decay $\Upsilon(10860)\to \Upsilon(1S)f_0(980)\to\Upsilon(1S)\pi^+\pi^-$, we estimate the fraction of the process $\Upsilon(10860)\to\Upsilon(1S)f_0(980)\to \Upsilon(1S)\eta\pi^0$, caused by the mixing of $a^0_0(980)$ and $f_0(980)$ resonances that breaks the isotopic invariance due to the… read more here.
Keywords: upsilon 980; 980 upsilon; 10860 upsilon; upsilon eta ... See more keywords
Potential observation of the $\Upsilon(6S) \to \Upsilon(1^3D_J) \eta$ transitions at Belle II
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DOI: 10.1103/physrevd.97.094018
Abstract: We perform the investigation of two-body hidden-bottom transitions of the Upsilon(6S), which include Upsilon(6S) -> Upsilon(1(3)D(j))eta(J = 1, 2, 3) decays. For estimating the branching ratios of these processes, we consider contributions from the triangle… read more here.
Keywords: upsilon upsilon; potential observation; observation upsilon; upsilon ... See more keywords
A proposal of searching for the $\Upsilon(6S)$ hadronic decays into $\Upsilon(nS)$ plus $\eta^{(\prime)}$
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DOI: 10.1103/physrevd.98.054008
Abstract: In this work, we propose a possible experimental research topic on the $\Upsilon(6S)\to \Upsilon(nS)\eta^{(\prime)}$ ($n=1,2,3$) transitions. Considering the hadronic loop effect from the intermediate $S$-wave $B_{(s)}$ and $B_{(s)}^*$ mesons, we estimate the partial decay widths… read more here.
Keywords: upsilon upsilon; hadronic decays; proposal searching; upsilon eta ... See more keywords