query: Do neutrinos really have a massless state?
positive_passages.docid: 148751
positive_passages.text: Which is the lightest thing in this universe? Is that a photon or neutrino?
negative_passages.docid: 119217
negative_passages.text: If particles are points, then aren't atoms empty space?
negative_passages.docid: 38673
negative_passages.text: General relativity: For massless particles, is the momentum and velocity 4-vectors equal?
negative_passages.docid: 74367
negative_passages.text: Newtonian mechanics: massless particles
negative_passages.docid: 38703
negative_passages.text: Do virtual particles actually physically exist?
negative_passages.docid: 25560
negative_passages.text: Neutrinos arrived before the photons (supernova)
negative_passages.docid: 100687
negative_passages.text: Neutrino Oscillations and Conservation of Momentum
negative_passages.docid: 12433
negative_passages.text: How do $\pi^0$ particles exist?
negative_passages.docid: 105194
negative_passages.text: Quantum properties of objects with zero velocity
negative_passages.docid: 39244
negative_passages.text: References on the non-compositeness of the known elementary particles
negative_passages.docid: 118153
negative_passages.text: Neutrino annihilation and bosons
negative_passages.docid: 1613
negative_passages.text: Is temperature in vacuum zero?
negative_passages.docid: 80719
negative_passages.text: What defines the mass of elementary particle?
negative_passages.docid: 53415
negative_passages.text: Do neutrinos not couple to the Higgs field?
negative_passages.docid: 51589
negative_passages.text: Can virtual particle have mass?
negative_passages.docid: 115490
negative_passages.text: Is particle superposition reflected in the particle's gravitational footprint?
negative_passages.docid: 104024
negative_passages.text: Does the mass of an electron change with its "energy state"?