Consider the following statements about Glueballs: 1. They are hypothetical composite particles made entirely of gluons, arising from the self-interaction of gluons through the strong nuclear force. 2. Unlike ordinary hadrons such as protons and neutrons, glueballs contain no valence quarks and are expected to be electrically neutral. Which of the statements given above is/are correct? |ForumIAS

Q. Consider the following statements about Glueballs:
1.They are hypothetical composite particles made entirely of gluons, arising from the self-interaction of gluons through the strong nuclear force.
2.Unlike ordinary hadrons such as protons and neutrons, glueballs contain no valence quarks and are expected to be electrically neutral.
Which of the statements given above is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 nor 2

Answer: C

Notes:

Explanation: Both 1 and 2

Statement 1 is correct: Glueballs are predicted by Quantum Chromodynamics (QCD) as bound states composed entirely of gluons. Since gluons themselves carry colour charge and interact with one another through the strong force, they can theoretically form bound states.

Statement 2 is correct: Glueballs are expected to contain no valence quarks and, because gluons have zero electric charge, glueballs are expected to be electrically neutral.

Source: TH

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