منابع مشابه
Top quark production near threshold and the top quark mass
We consider top-anti-top production near threshold in e+e− collisions, resumming Coulomb-enhanced corrections at next-to-next-to-leading order (NNLO). We also sum potentially large logarithms of the small top quark velocity at the next-toleading logarithmic level using the renormalization group. The NNLO correction to the cross section is large, and it leads to a significant modification of the...
متن کامل– 1– the Top Quark
A. Introduction: The top quark is the Q = 2/3, T3 = +1/2 member of the weak-isospin doublet containing the bottom quark (see the review on the “Standard Model of Electroweak Interactions” for more information). This note summarizes the properties of the top quark (mass, production cross section, decay branching ratios, etc.), and provides a discussion of the experimental and theoretical issues ...
متن کامل– 1 – the Top Quark
A. Introduction: The top quark is the Q = 2/3, T3 = +1/2 member of the weak-isospin doublet containing the bottom quark (see our review on the “Standard Model of Electroweak Interactions” for more information). This note summarizes its currently measured properties, and provides a discussion of the experimental and theoretical issues involved in the determination of its parameters (mass, produc...
متن کاملThe Top Quark
member of the weak-isospin doublet containing the bottom quark (see our review on the \Standard Model of Electroweak Interactions" for more information). This note summarizes its currently measured properties, and provides a discussion of the experimental and theoretical issues involved in the determination of its parameters (mass, production cross section, decay branching ratios, etc.). B. Top...
متن کاملThe Top Quark Must Exist
I compare the anticipated properties of the top quark with what is known experimentally about the heaviest fermion. I review the scienti c opportunities that will be presented in the near future by copious samples of top. These include re ned tests of electroweak radiative corrections, studies of the nature of top itself, and exploration of electroweak symmetry breaking. I conclude by illustrat...
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ژورنال
عنوان ژورنال: Europhysics News
سال: 1990
ISSN: 0531-7479,1432-1092
DOI: 10.1051/epn/19902111203