Search for e+e− → $$ {K}_S^0{K}_S^0{h}_c $$
DOI:
10.1007/jhep05(2025)144
Publication Date:
2025-05-20T15:16:54Z
AUTHORS (667)
ABSTRACT
A bstract Using e + − collision data at 13 center-of-mass energies ranging from 4.600 to 4.951 GeV collected with the BESIII detector, we conduct first search for → $$ {K}_S^0{K}_S^0{h}_c <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msubsup> <mml:mi>K</mml:mi> <mml:mi>S</mml:mi> <mml:mn>0</mml:mn> </mml:msubsup> <mml:msub> <mml:mi>h</mml:mi> <mml:mi>c</mml:mi> </mml:msub> </mml:math> process and investigate resonance structures in cross section line shape. No significant signal is observed, upper limits of Born sections each energy are presented. The ratio \frac{\sigma \left({e}^{+}{e}^{-}\to {K}_S^0{K}_S^0{h}_c\right)}{\sigma {K}_S^0{K}_S^0J/\psi \right)} <mml:mfrac> <mml:mrow> <mml:mi>σ</mml:mi> <mml:mfenced> <mml:msup> <mml:mi>e</mml:mi> <mml:mo>+</mml:mo> </mml:msup> <mml:mo>−</mml:mo> <mml:mo>→</mml:mo> </mml:mrow> </mml:mfenced> <mml:mi>J</mml:mi> <mml:mo>/</mml:mo> <mml:mi>ψ</mml:mi> </mml:mfrac> determined be 0.15 ± 0.22. This result indicates that if vector states exist this region, their decay into h c significantly suppressed compared decays J / ψ .
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