Hexaquark

In particle physics, hexaquarks, alternatively known as sexaquarks,^[1] are a large family of hypothetical particles, each particle consisting of six quarks or antiquarks of any flavours. Six constituent quarks in any of several combinations could yield a colour charge of zero; for example a hexaquark might contain either six quarks, resembling two baryons bound together (a dibaryon), or three quarks and three antiquarks.^[2] Once formed, dibaryons are predicted to be fairly stable by the standards of particle physics.

A number of experiments have been suggested to detect dibaryon decays and interactions. In the 1990s, several candidate dibaryon decays were observed but they were not confirmed.^[3]^[4]^[5]

There is a theory that strange particles such as hyperons^[6] and dibaryons^[7]^[8] could form in the interior of a neutron star, changing its mass–radius ratio in ways that might be detectable. Accordingly, measurements of neutron stars could set constraints on possible dibaryon properties.^[9] A large fraction of the neutrons in a neutron star could turn into hyperons and merge into dibaryons during the early part of its collapse into a black hole ^{[citation needed]}. These dibaryons would very quickly dissolve into quark–gluon plasma during the collapse, or go into some currently unknown state of matter.

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[sexquarks-1] Cite error: The named reference sexquarks was invoked but never defined (see the help page).

[Vijande2011-2] Cite error: The named reference Vijande2011 was invoked but never defined (see the help page).

[Belz1996-3] Cite error: The named reference Belz1996 was invoked but never defined (see the help page).

[Stotzer1997-4] Cite error: The named reference Stotzer1997 was invoked but never defined (see the help page).

[AH2000-5] Cite error: The named reference AH2000 was invoked but never defined (see the help page).

[Ambartsumyan1960-6] Cite error: The named reference Ambartsumyan1960 was invoked but never defined (see the help page).

[Krivoruchenko1987-7] Cite error: The named reference Krivoruchenko1987 was invoked but never defined (see the help page).

[Kagiyama1992-8] Cite error: The named reference Kagiyama1992 was invoked but never defined (see the help page).

[Faessler1997-9] Cite error: The named reference Faessler1997 was invoked but never defined (see the help page).

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