Comparison of the Standard Theory Predictions of M_W and Sin^2 theta^lept_eff with their Experimental Values

TL;DR

This paper compares Standard Theory predictions of M_W and Sin^2 theta^lept_eff with experimental data, finding good agreement for Sin^2 theta^lept_eff and a slight deviation for M_W, supporting the Higgs boson identification.

Contribution

It provides a detailed comparison of Standard Theory predictions with experimental measurements for key electroweak observables, highlighting their consistency and deviations.

Findings

Sin^2 theta^lept_eff prediction matches experimental value

M_W prediction deviates by 1.33 sigma from experiment

Results support the Higgs boson as the Standard Theory particle

Abstract

Assuming that the recently discovered particle at LHC is the Standard Theory (ST) Higgs Boson, we compare the ST predictions of M_W and Sin^2 theta^lept_eff with the experimental values of these basic observables. While the Sin^2 theta^lept_eff prediction is in excellent agreement with its experimental value, that of M_W shows a 1.33 sigma deviation. Implications of these comparisons for possible future developments at LHC and a future GigaZ linear collider are briefly discussed. It is also pointed out that these comparisons are consistent with the conjecture that the newly discovered particle is indeed the ST Higgs boson.