The study of physics in the standard model by a pair of tt'bar' spin correlations

Spin correlations of tt'bar' pair represent a possible way to study physics expressions for the standard model and therefore a powerful tool to investigate a validity of the Standard Model. Physical quantity characterizing the spin correlations is the spin correlation coefficient, which is in direct connection with the spin asymmetry of tt'bar' pair production if the two quarks (top-anti-top) are equally oriented spins and where both quarks have opposite oriented spins. The value of the spin asymmetry is determined by the Standard Model. Deviations from this value asymmetry could adumbrate existence of physics behind Standard model, which will be represented in this work by co-called Randall-Sundrum model. (author)