neutrinolike
Neutrinolike is an informal descriptor used in high-energy physics to refer to particles or signals that resemble neutrinos in their key properties or behavior: they are electrically neutral, have very small masses (in many models), and interact only weakly with ordinary matter. Because of these traits they typically produce signatures characterized by missing energy or uncharged, weakly interacting final states in detectors, rather than easily observable charged tracks.
In theory and experiment, neutrinolike particles can be real neutrinos or new species predicted to mix with
Experimental implications: neutrinike signals complicate measurements that target true neutrinos, appearing as missing energy or unusual
Cosmology and astrophysics: neutrino-like particles can contribute to the radiation content of the early universe, influencing
Usage and caveats: neutrinolike is not a precise technical term with a single definition; it is used