If you mean the omega baryon, it's a baryon, which means it has mass by definition ("barytes" is Greek for "heavy").
Otherwise ... I've never heard of an "ohm particle" and frankly it sounds like the sort of thing that would feature in a particularly crackpotty reimagination of physics, along the lines of magnetic immortality bracelets and the "plutonium atom totality" nonsense.
A particle without mass is called a massless particle. Massless particles travel at the speed of light and do not experience gravitational forces. They have energy and momentum, but no rest mass. Examples of massless particles include photons (particles of light) and gluons (particles that mediate the strong nuclear force).
The lightest subatomic particle is the electron.
The " Ohm " is. 1 ohm is the resistance across which 1 volt of EMF appears when the current through it is 1 Ampere.
Acceleration = force/mass
The mass and size of an alpha particle compare with the masa and size of beta particle in the sense that the alpha particle is significantly larger in both size and mass that the beta and gamma particles. This is why it is called the alpha particle.
The atomic mass is the mass of a molecule, atomic particle or sub-atomic particle.
An alpha particle is a helium-4 nucleus. It has a mass of about 4 atomic mass units.
The tau neutrino has mass and is denoted with the symbol μ.
A particle that has a mass of 1 and a charge of 1 plus is a proton.
you can't get mass you can acquire it mass is govern by a particle known as the Bassa Nova Higgs the smallest particle in the mutiverse or universe.
This particle is the neutron.
The electron is the subatomic particle with the least mass. It has a mass of about 1/1836 of a proton or neutron.