PANIC 2014 CLICdp abstracts

Session: Standard model physics at the TeV scale (Session ID 6)

Higgs Physics at CLIC

• Speaker: Frank Simon
• Status: Accepted
• Abstract: The Compact Linear Collider (CLIC) is an attractive option for a future multi-TeV linear electron-positron collider, offering the potential for a rich precision physics programme, combined with sensitivity to a wide range of new phenomena. The physics reach of CLIC has been studied in the context of three distinct centre-of-mass energy stages, 350 GeV, 1.4 TeV and 3.0 TeV. This staged scenario provides the ideal environment for precise studies of the properties of the ~125 GeV Higgs boson. Operation at 350 GeV allows the couplings and width of the Higgs boson to be determined in a model-independent manner through the study of the Higgs-strahulung and WW-fusion processes. Operation at higher centre-of-mass energies provides high statistics for even more precise measurements and the potential to study the top Yukawa coupling and even the Higgs boson self-coupling. In this talk we explore the potential of the CLIC Higgs physics programme, based on full simulation studies of a wide range of final states. The evolution of the physics sensitivity with centre-of-mass energy is presented in terms of model-independent coupling fits and the constrained kappa fits employed at the LHC.
• Slides

Top Quark Precision Physics at Linear Colliders

• Speaker: Frank Simon
• Status: Submitted via LCC, accepted
• Abstract: The future precision studies of the Standard Model require excellent knowledge of the top quark mass, to an accuracy of 100 MeV or better. A threshold scan in e+e- annihilation enables a precise measurement in theoretically well-defined mass schemes. The measurement requires a combination of precise QCD calculations, excellent detection efficiency and recognition of top quark events, and excellent control of the initial beam energy and profile. Above the production threshold, the efficient identification to top pair events combined with polarized beams provides the potential to extract the form factors for the top quark couplings with high precision and in a model-independent way, resulting in excellent sensitivity to physics beyond the standard model. We will provide an overview of top physics at linear colliders based on results from full-simulation studies of top quark pair production in the detectors proposed for ILC and CLIC.
• Slides

Session: Energy frontier physics beyond the standard model (Session ID 7)

Prospects for Beyond Standard Model Physics at CLIC

• Speaker: Lucie Linssen
• Status: Accepted
• Abstract: The Compact Linear Collider (CLIC) is an attractive option for a future multi-TeV linear electron-positron collider. A staged construction in several centre-of-mass energy steps from a few hundred GeV up to 3 TeV is foreseen. At high energies, CLIC provides sensitivity to a wide range of phenomena beyond the Standard Model through direct observation of new particles and precision measurements. An overview of these opportunities is given in this presentation. CLIC is in particular well suited for the measurement of weakly interacting states due to the clean experimental conditions and low backgrounds compared to hadron colliders. Most studies are based on full detector simulations using Geant 4 and considering pileup from gamma gamma -> hadrons interactions. The production of supersymmetric particles like sleptons and gaugions was studied in detail in several different models. The scenarios discussed in this presentation include an extended Higgs sector, Z' physics and other models.
• Slides