Thresholds in alpha(sub s) Evolution and the rho(sub T) Dependence of Jets

摘要

We point out that high-mass thresholds in the evaluation of the strong-interaction coupling parameter alpha s, due to gluinos, squarks and possible new heavy quarks, could introduce appreciable corrections to the transverse momentum dependence of jet production at the Tevatron. If the new thresholds were near scale mu = 200 GeV, then within the limits of asymptotic freedom they could introduce up to 11 percent increase in alpha s(mu) (and hence 23 percent increase in jet production) at scale mu = 500 GeV, compared to Standard Model extrapolations.