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This Resource Book reviews the physics opportunities of a next-generation e + e − linear collider and discusses options for the experimental program. Part 4 discusses options for the linear collider program, at a number of levels. First, it presents a broad review of physics beyond the Standard Model, indicating how the linear collider is relevant to each(More)
A new method for the reduction of one-loop tensor 5-point integrals to related 4-point integrals is proposed. In contrast to the usual Passarino–Veltman reduction and other methods used in the literature, this reduction avoids the occurrence of inverse Gram determinants, which potentially cause severe numerical instabilities in practical calculations.(More)
We discuss the complete virtual and soft-photonic O(α) corrections to γγ → W + W − within the electroweak Standard Model for arbitrary polarized photons. In the on-shell renormalization scheme for fixed M W no leading corrections associated with the running of α or heavy top-quark and Higgs-boson masses occur. The corrections turn out to be of the order of(More)
We have calculated the complete O(α) and O(α s) radiative corrections to the Higgs-production process e + e − → t ¯ tH in the Standard Model. This process is particularly interesting for the measurement of the top-quark Yukawa coupling at a future e + e − col-lider. The calculation of the O(α) corrections is described in some detail including, in(More)
The complete electroweak O(α) corrections have been calculated for the charged-current four-fermion production processes e + e − → ν τ τ + µ − ¯ ν µ , u ¯ dµ − ¯ ν µ , and u ¯ ds¯ c. Here, technical details of this calculation are presented. These include the algebraic reduction of spinor chains to a few standard structures and the consistent implementation(More)
The radiative corrections of the strong and electroweak interactions are calculated at next-to-leading order for Higgs-boson production in the weak-boson-fusion channel at hadron colliders. Specifically, the calculation includes all weak-boson fusion and quark– antiquark annihilation diagrams to Higgs-boson production in association with two hard jets,(More)
We present new methods for the evaluation of one-loop tensor integrals which have been used in the calculation of the complete electroweak one-loop corrections to e + e − → 4 fermions. The described methods for 3-point and 4-point integrals are, in particular, applicable in the case where the conventional Passarino–Veltman reduction breaks down owing to the(More)
The complete matrix elements for e + e − → 4f and e + e − → 4f γ are calculated in the Electroweak Standard Model for polarized massless fermions. The matrix elements for all final states are reduced to a few compact generic functions. Monte Carlo generators for e + e − → 4f and e + e − → 4f γ are constructed. We compare different treatments of the finite(More)