New Way to Produce Dense Double-Antikaonic Dibaryon System, \bar{K}\bar{K} NN, through Lambda(1405)-Doorway Sticking in p+p Collisions

TL;DR

This paper proposes a new method for producing the dense double-antikaonic dibaryon system, K^-K^-pp, in proton-proton collisions via b1(1405)-doorway sticking, supported by theoretical analysis and recent experimental observations.

Contribution

It introduces a novel production mechanism for the dense K^-K^-pp system through b1(1405) resonance doorways in p+p collisions, with theoretical validation.

Findings

K^-K^-pp can be formed in p+p collisions if it is dense.

K^- -K^- repulsion does not significantly reduce density or binding energy.

Simultaneous b1(1405) production facilitates copious formation.

Abstract

A recent successful observation of a dense and deeply bound \bar{K} nuclear system, K^-pp, in the p + p \rightarrow K^+ + K^-pp reaction in a DISTO experiment indicates that the double-\bar{K} dibaryon, K^-K^-pp, which was predicted to be a dense nuclear system, can also be formed in p+p collisions. We find theoretically that the K^- -K^- repulsion plays no significant role in reducing the density and binding energy of K^-K^-pp and that, when two \Lambda(1405) resonances are produced simultaneously in a short-range p+p collision, they act as doorways to copious formation of K^-K^-pp, if and only if K^-K^-pp is a dense object, as predicted.