Implementing invariant mass cuts and finite lifetime effects in top-antitop production at threshold

Details Implementing invariant mass cuts and finite lifetime effects in top-antitop production at threshold Implementing invariant mass cuts and finite lifetime effects in top-antitop production at threshold

2008-10-16

arxiv.org/abs/0810.2934v1

Nucl.Phys.Proc.Suppl.186:403-406,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 4 figures. Talk given at the 14th International QCD Conference (Montpellier 7-12th July 2008)

Scientific paper

10.1016/j.nuclphysbps.2008.12.09

The effects of the finite top quark width in the top pair production cross section close to the threshold are discussed in this talk. We introduce a $t\bar{t}$ cross section with a cut on the invariant masses of the top and antitop that can be calculated theoretically with effective field theory (EFT) methods. The matching procedure to implement the physical phase-space boundaries in the NRQCD framework (``phase-space matching'') is briefly outlined.

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