Neutral technicolor pseudo Goldstone bosons production and QCD (quantum chromodynamics) background at the SSC (Superconducting Super Collider)

摘要

The production of the neutral technicolor pseudo Goldstone bosons, P(sup 0)(prime)and P(sub 8)(sup 0)(prime), at large transverse momentum in pp collisions, pp (yields) g(q)P(sup 0)(prime) (P(sub 8)(sup 0)(prime))X has been investigated in reactions at a high energy collider such as the SSC. The major two-body and three-body decay modes in tree diagrams are investigated in detail. The t(bar t) decay channel would dominate both the decays of P(sup 0)(prime) and P(sub 8)(sup 0)(prime) if it is allowed. Otherwise, gg and 3g will be the dominant decay modes unless the mass of the P(sup 0)(prime) and P(sub 8)(sup 0)(prime) are below 40 GeV, where b(bar b) becomes dominant. According to the QCD backgrounds, which we have also investigated in detail in this work, the signal for t(bar t) is much larger than the background and will be the ideal signal for detecting these bosons. However, in the absence of the t(bar t) channel, the (tau)(bar (tau)) mode can be used to identify P(sup 0)(prime) up to m(sub P) = 300 GeV in the transverse momentum range P(sub (perpendicular)) (approx lt) 100 GeV. Similarly, the b(bar b) decay mode can serve us a signal to identify P(sub 8)(sup 0)(prime) up to m(sub P) = 300 GeV for P(sub (perpendicular)) between 500 and 700 GeV. Our results show that these high transverse momentum production processes are useful for the searching for the P(sub 8)(sup 0)(prime) at the SSC. 63 refs.