Cross sections for the reactions $e^+ e^-\to K^0_S K^0_Lπ^0$, $K^0_S K^0_Lη$, and $K^0_S K^0_Lπ^0π^0$ from events with initial-state radiation

The BABAR Collaboration

doi:10.1103/PhysRevD.95.052001

paper

Cross sections for the reactions $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} π^{0}$ , $K_{S}^{0} K_{L}^{0} η$ , and $K_{S}^{0} K_{L}^{0} π^{0} π^{0}$ from events with initial-state radiation

arXiv:1701.08297 · doi:10.1103/PhysRevD.95.052001

Abstract

We study the processes $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} π^{0} γ$ , $K_{S}^{0} K_{L}^{0} η γ$ , and $K_{S}^{0} K_{L}^{0} π^{0} π^{0} γ$ , where the photon is radiated from the initial state, providing cross section measurements for the hadronic final states over a continuum of center-of-mass energies. The results are based on 469~ $f b^{- 1}$ of data collected at or near the $Υ (4 S)$ ~ resonance with the BaBar detector at SLAC. We present the first measurements of the $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} π^{0}$ , $K_{S}^{0} K_{L}^{0} η$ , and $K_{S}^{0} K_{L}^{0} π^{0} π^{0}$ cross sections up to a center-of-mass energy of 4~GeV, and study their intermediate resonance structures. We observe $J / ψ$ decays to all of these final states for the first time, present measurements of their $J / ψ$ branching fractions, and search for $ψ (2 S)$ decays.

18 pages, 27 postscript figures

Cross sections for the reactions $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} π^{0}$ , $K_{S}^{0} K_{L}^{0} η$ , and $K_{S}^{0} K_{L}^{0} π^{0} π^{0}$ from events with initial-state radiation

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Cross sections for the reactions e+e−→KS0​KL0​π0, KS0​KL0​η, and KS0​KL0​π0π0 from events with initial-state radiation

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Cross sections for the reactions $e^{+} e^{-} \to K_{S}^{0} K_{L}^{0} π^{0}$ , $K_{S}^{0} K_{L}^{0} η$ , and $K_{S}^{0} K_{L}^{0} π^{0} π^{0}$ from events with initial-state radiation