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hep-ph2002
Understanding Heavy Quarkonium Systems in Perturbative QCD
Y. Sumino
We review the recent theoretical progress in heavy quarkonium spectroscopy within the boundstate theory based on perturbative QCD. New microscopic pictures of the heavy quarkonium…
hep-ex2002
Kinematical Reconstruction of the ttbar System Near its Threshold at Future e+e- Linear Colliders
Katsumasa Ikematsu, Keisuke Fujii, Zenro Hioki +2
We developed a new method for full kinematical reconstruction of the ttbar system near its threshold at future linear e+e- colliders. In the core of the method lies likelihood fitt…
hep-ph2002
Corrections to quarkonium 1S energy level at O(alpha_S^4 m) from non-instantaneous Coulomb vacuum polarization
Y. Kiyo, Y. Sumino
We calculate O(alpha_S^4 m) and O(alpha_S^4 m log(alpha_S)) corrections to the quarkonium 1S energy level analytically, which have been overlooked in recent studies. These are the…