Definition/Description. Trapezius Myalgia is chronic pain of the upper trapezius muscle, most frequent is neck pain. It is a complex and multifactorial condition. Musculoskeletal pain is often intensifying by mental and social stress at home or work.
A hadron, in particle physics, is any subatomic (smaller than the atom) particle or antiparticle which is made of quarks. Quarks are fundamental particles which among other properties have an electrical charge and a name (e.g. 'up', 'down', 'strange'). The electrical charge of a single quark is always a fraction (e.g. 2/3).
Bubble chamber trace of the first observed Ï baryon event at Brookhaven National Laboratory. The Omega baryons are a family of subatomic hadron particles that are represented by the symbol Ï and are either neutral or have a +2, +1 or â1 elementary charge. They are baryons containing no up or down quarks. Omega baryons containing top quarks are not expected to be observed. This is because the Standard Model predicts the mean lifetime of top quarks to be roughly 6975500000000000000â 5Ã10â25 s, which is about a twentieth of the timescale for strong interactions, and therefore that they do not form hadrons.