期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 9, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP09(2010)034
关键词
Heavy Quark Physics; Hadronic Colliders; QCD
资金
- MEXT, Japan [20540246]
- Grants-in-Aid for Scientific Research [20540246] Funding Source: KAKEN
First we present a theoretical framework to compute the fully differential cross sections for the top-quark productions and their subsequent decays at hadron colliders, incorporating the bound-state effects which are important in the t (t) over bar threshold region. We include the bound-state effects such that the cross sections are correct in the LO approximation both in the threshold and high-energy regions. Then, based on this framework we compute various kinematical distributions of top quarks as well as of their decay products at the LHC, by means of Monte-Carlo event-generation. These are compared with the corresponding predictions based on conventional perturbative QCD. In particular, we find a characteristic bound-state effect on the (bW(+))-((b) over bar bW(-)) double-invariant-mass distribution, which is deformed to the lower invariant-mass side in a correlated manner.
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