Quark matter or new particles?

Abstract
It has been argued that compression of nuclear matter to somewhat higher densities may lead to the formation of stable quark matter. A plausible alternative, which leads to radically new astrophysical scenarios, is that the stability of quark matter simply represents the stability of new particles compounded of quarks. A specific example is the SU(3)-symmetric version of the α particle, composed of spin-zero pairs of each of the baryon octet (an ‘‘octet’’ particle).

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