Let us assume that there is a characteristic radius (residual radius) [r.sub.0] of the quark and
antiquark system (which is the smallest distance between the two quarks where they cannot collide with each other).
antiquark, or whether the extreme fleetingness of that which can not
Each particle also has an antiparticle, such as an
antiquark. Atomic nuclei are made of protons and neutrons, which in turn are made of quarks.
A quark (
antiquark) has a baryon number 1/3 (-1/3), while SM lepton has 0.
In meson for example (a simpler case) the quark and the
antiquark must undergo rapid interchange of identity into each other (through exchange of force particles) to remain in a stable form.
The two tree diagrams in first line of Figure 1 represent the color-favored tree diagram for D [right arrow] P(V) transition and the W-exchange diagram with the pseudoscalar (vector) meson containing the
antiquark from the weak vertex, respectively.
In the SU(3) representations the quark and
antiquark contributions cancel.
Like other mesons, DsJ(2632) is thought to contain one quark--a strange quark--and one antiquark--a charm
antiquark.
quarks of different colors, or a quark of one color and an
antiquark carrying the corresponding anticolor.