Correct Answer - Option 1 : Hyperon
Concept:
Hyperon:
- Heavy, unstable elementary particles with a mass greater than that of a nucleon.
Nucleon:
- Nucleon, either of the subatomic particles, the proton and the neutron, constituting atomic nuclei.
- The mass of a neutron particle is nearly equal to 939.56 MeV, which is slightly greater than the mass of a proton.
Graviton:
- Graviton is the hypothetical quantum of gravity, an elementary particle that mediates the force of gravity.
- The graviton is expected to be massless because the gravitational force is very long-range and appears to propagate at the speed of light.
Lepton:
- These are the subatomic particles that respond only to the weak force. They are not affected by the strong force.
- These are the small mass range particle (0 - 135 Mev).
Meson:
- These are the member of a family of subatomic particles composed of a quark and an antiquark.
- Mesons are sensitive to strong force.
- Meson is an intermediate-mass range particle (135 - 938.3 MeV).
Explanation:
From the above discussion, we can see that,
- Mass of Lepton = 0 - 135 MeV.
- Mass of Meson = 135 - 938.3 MeV.
- Mass of graviton nearly equal to zero.
- Mass of neutron = 939.56 MeV, which is greater than a proton.
- The mass of hyperon is greater than the mass of nucleon.
Hence, hyperon has the highest mass in the given particles.
