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Cosmas Zachos
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Quarks are most peculiar elementary particles: they cannot be asymptotic states, and be observed in isolation outside hadrons.

So, no, a photon cannot excite them to some type of resonant hadronic bound state. How could it?

(A photon could, and often does, knock them out of the hadron, but they drag the requisite gluons and quarks out with them to generate their own color-singlet hadron cocoon.)

Quarks are most peculiar elementary particles: they cannot be asymptotic states, and be observed in isolation outside hadrons.

So, no, a photon cannot excite them to some type of resonant hadronic bound state.

Quarks are most peculiar elementary particles: they cannot be asymptotic states, and be observed in isolation outside hadrons.

So, no, a photon cannot excite them to some type of resonant hadronic bound state. How could it?

(A photon could, and often does, knock them out of the hadron, but they drag the requisite gluons and quarks out with them to generate their own color-singlet hadron cocoon.)

Source Link
Cosmas Zachos
  • 66.3k
  • 6
  • 110
  • 248

Quarks are most peculiar elementary particles: they cannot be asymptotic states, and be observed in isolation outside hadrons.

So, no, a photon cannot excite them to some type of resonant hadronic bound state.