In physics, a real neutral particle is a particle that is its own antiparticle. The spin, electromagnetic charge, weak charge, and strong charge of such a particle must be zero. An example is the photon.
Example Usage of particle
BrookhavenLab: Superconducting magnet advance opens the doors to more powerful particle colliders: http://bit.ly/5JJVsW
KeithleyInst: Dr. Jens Greiser of FEI Company talks about advanced particle beam methods for nano-characterization and analysis: http://ow.ly/M2y1
mnaqi_rochester: Forecast for Rochester
Wed, Dec 16: Moderate (55) - particle Pollution
Thu, Dec 17: Moderate (87) - particle Pollution