Mesons
are combinations of two quarks.

The pseudoscalar mesons have quark and antiquark spins antialigned and
zero orbital angular momentum, resulting in j=0. They have negative parity.
The diagrams are plotted with strangeness
on the vertical axis and isospin
on the horizontal axis.

Table
of mesons

Index

Particle
concepts

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Mesons
are combinations of two quarks.

The vector mesons have quark and antiquark spins aligned and zero
orbital angular momentum, resulting in j=1. They have negative parity.
The diagrams are plotted with strangeness
on the vertical axis and isospin
on the horizontal axis.

The rho vector meson has a mass dramatically larger than the
pseudoscalar pi meson which has the same quark content, illustrating the
extraordinary variation of effective quark
masses.

Table
of mesons

Index

Particle
concepts

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Baryons
are combinations of three quarks.

The diagrams are plotted with strangeness
on the vertical axis and isospin
projection on the horizontal axis.

Table
of Baryons

Index

Particle
concepts

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Quantum Physics

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Baryons
are combinations of three quarks.

The diagrams are plotted with strangeness
on the vertical axis and isospin
projection on the horizontal axis.

Table
of Baryons

Index

Particle
concepts

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Quantum Physics

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