Search for $K^{-}pp$ bound state via $\gamma d\to K^{+}{\pi }^{-}X$ reaction at $E_{\gamma }=1.5-2.4$ GeV

Abstract

A search for $K^{-}pp$ bound state (the lightest kaonic nucleus) has been performed using the $\gamma d\to K^{+}{\pi }^{-}\mathrm{X}$ reaction at E${}_{\gamma }$=1.5-2.4 GeV at LEPS/SPring-8. The differential cross section of $K^{+}{\pi }^{-}$ photo-production off deuterium has been measured for the first time in this energy region, and a bump structure was searched for in the inclusive missing mass spectrum. A statistically significant bump structure was not observed in the region from 2.22 to 2.36 GeV/$c^2$, and the upper limits of the differential cross section for the $K^{-}pp$ bound state production were determined to be 0.1$-$0.7 $\mu$ b (95 confidence level) for a set of assumed binding energy and width values.

References in corpus (9)

• Faddeev calculation of a $K^{-}pp$ quasi-bound state
• Strange dibaryon resonance in the anti-KNN--piYN system
• Variational calculation of the ppK^- system based on chiral SU(3) dynamics
• Indication of a deeply bound compact K-pp state formed in the pp -> p Lambda K+ reaction at 2.85 GeV
• The basic K nuclear cluster K- pp and its enhanced formation in the p + p -> K+ + X reaction
• $\bar{K}NN$ quasi-bound state and the $\bar{K}N$ interaction: coupled-channel Faddeev calculations of the $\bar{K}NN-\pi \Sigma N$ system
• Energy dependence of barKN interactions and resonance pole of strange dibaryons
• Nucleon and Delta resonances in K Sigma(1385) photoproduction from nucleons
• Search for strange tribaryon states in the inclusive ^4He(K^{-}_{stopped}, p) reaction

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