Two-particle kinematic distributions from new physics at an electron-positron collider with polarized beams

Abstract

The kinematic distributions in two-particle inclusive processes at an e+e- collider arising from standard-model s-channel exchange of a virtual gamma or Z and the interference of the standard-model contribution with contributions from physics beyond the standard model involving s-channel exchanges are derived entirely in terms of the space-time signature of such new physics. Transverse as well as longitudinal polarizations of the electron and positron beams are taken into account. We show how these model-independent distributions can be used to deduce some general properties of the nature of the interaction. We then specialize to two specific two-particle final states, viz., ZH, where H is one of the Higgs bosons in a model with an extended Higgs sector, and f fbar, where f, fbar are a pair of conjugate charged fermions, wherein distributions of two (of the possibly several) decay products are measured. We show how some of the properties of the distributions have been realized in the analysis of physics beyond the standard model in earlier work which made use of two-particle angular distributions.

v2 is now 18 pages long, latex, uses axodraw. Expanded version of v1 corresponding to version accepted for publication by European Physical Journal

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Cited by in corpus (7)

• Angular distributions as a probe of anomalous ZZH and gammaZH interactions at a linear collider with polarized beams
• Use of transverse beam polarization to probe anomalous VVH interactions at a Linear Collider
• Decay-lepton correlations as probes of anomalous ZZH and gammaZH interactions in e+e- --> ZH with polarized beams
• Top-spin analysis of new scalar and tensor interactions in e^+ e^- collisions with beam polarization
• Spin and Chirality Effects in Antler-Topology Processes at High Energy $e^{+}{e}^{-}$ Colliders
• Inclusive spin-momentum analysis and new physics at a polarized electron-positron collider
• Effective fermion-Higgs interactions at an $e^{+}{e}^{-}$ collider with polarized beams