期刊
PHYSICAL REVIEW D
卷 86, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.86.034010
关键词
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资金
- PSC-CUNY Award [64133-00 42]
- NSF Grant [PHY-1068317]
- German Research Foundation [NE398/3-1, 577401]
- European Commission through the LHCPhenoNet Initial Training Network [PITN-GA-2010-264564]
- Schweizer Nationalfonds [200020-124773]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1068317] Funding Source: National Science Foundation
- Swiss National Science Foundation (SNF) [200020_124773] Funding Source: Swiss National Science Foundation (SNF)
We investigate the production of highly energetic top-quark pairs at hadron colliders, focusing on the case where the invariant mass of the pair is much larger than the mass of the top quark. In particular, we set up a factorization formalism appropriate for describing the differential partonic cross section in the double soft and small-mass limit, and explain how to resum simultaneously logarithmic corrections arising from soft gluon emission and from the ratio of the pair-invariant mass to that of the top quark to next-to-next-to-leading logarithmic accuracy. We explore the implications of our results on approximate next-to-next-to-leading order formulas for the differential cross section in the soft limit, pointing out that they offer a simplified calculational procedure for determining the currently unknown delta-function terms in the limit of high invariant mass.
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