KIT | KIT-Bibliothek | Impressum

Scattering of W and Z bosons at high-energy lepton colliders

Fleper, C.; Kilian, W.; Reuter, Jürgen; Sekulla, Marco

Abstract:
We present a new study of quasi-elastic W and Z scattering processes in high-energy
e+e−
collisions, based on and extrapolating the low-energy effective theory which extends the standard model with a 125GeV
Higgs boson. We parameterize deviations in the low-energy range in terms of the dimension-eight operators that arise in the effective theory. Smoothly extending this to higher energy, we study a set of simplified models of new physics in W / Z scattering, (1) a structureless extrapolation of the effective theory, and (2) scalar and tensor resonance multiplets. The high-energy asymptotics of all models is regulated by a universal unitarization procedure. This enables us to provide benchmark scenarios which can be meaningfully evaluated off shell and in exclusive event samples, and to determine the sensitivity of an
e+e−
collider to the model parameters. We analyze the longitudinal vector-boson scattering modes, where we optimize the cuts for the fiducial cross section for different collider scenarios. Here, we choose energy stages of 1.0, 1.4 and 3 TeV, as motivated by the extendability of the ILC project and the stagi ... mehr


Zugehörige Institution(en) am KIT Institut für Theoretische Physik (ITP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2017
Sprache Englisch
Identifikator DOI: 10.1140/epjc/s10052-017-4656-5
ISSN: 1434-6044, 1434-6052
URN: urn:nbn:de:swb:90-673013
KITopen ID: 1000067301
Erschienen in The European physical journal / C
Band 77
Heft 2
Seiten 77:120
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft KITopen Landing Page