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Width effects on near threshold decays of the top quark<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>t</mml:mi><mml:mo>โ</mml:mo><mml:mi>c</mml:mi><mml:mi>W</mml:mi><mml:mi>W</mml:mi><mml:mo>,</mml:mo><mml:mi>c</mml:mi><mml:mi>Z</mml:mi><mml:mi>Z</mml:mi></mml:math>and of neutral Higgs bosons
The nonzero widths of heavy particles become significant when they appear in the final state of any decay occurring just around its kinematical threshold. To take into account such effects, a procedure, called the convolution method, was proposed by Altarelli, Conti, and Lubicz. We expand their study which included only โฆ