Conveners
Parallel: Snowmass/Future colliders: [Room C]
- Caterina Vernieri (SLAC National Accelerator Laboratory (US))
- Isobel Ojalvo (Princeton University (US))
- Sally Dawson (BNL)
Description
Parallel C ZOOM Meeting: 617 4486 8526
Passcode: [please register to get this info]
Mattermost channel for discussions: https://mattermost.web.cern.ch/higgs2021/channels/snowmassfuture-colliders
The Muon Collider is a possible option for the next generation of high energy collider machines. It would permit to achieve very high energy in the center of mass using leptons without occurring in a significative synchrotron radiation losses as in the electrons rings. Due to the muon decay, the detector has to sustain a high level of background: beam decay products and subsequent particles...
Among the projects currently under study for the next generation of particle accelerators, the muon collider represents a unique machine, which has the capability to provide leptonic collisions at energies of several TeV. The multi-TeV energy regime is as yet unexplored and holds a huge physical potential that will enable a novel research programme ranging from high precision measurements of...
At e+e- colliders, it is possible to separately measure the branching ratios for Higgs decays to bb, cc, and light quark and gluon jets. However, this imposes extraordinary requirements on heavy quark tagging. We have been studying the capabilities of e+e- detectors for heavy quark tagging using the reactions e+e- -> qq, with qq = cc, bb, tt at 250 and 500 GeV. We will show with detailed...
We introduce here a new method to measure the Higgs decay branching ratios at future e⁺e⁻ Higgs factories, by directly exploiting class numeration.
Given the clean environment at a lepton collider, we build an event sample highly enriched in Higgs bosons and essentially unbiased for any decay mode.
The sample can be partitioned into categories using event properties linked to the expected...
Higgs self-coupling measurement provides a direct probe of the Higgs potential, which is important both for understanding of electroweak symmetry breaking and for testing of electroweak baryogenesis models. In this talk we will present studies addressing two aspects about the Higgs self-coupling measurement at the ILC at the center-of-mass energies of 500 GeV and 1 TeV. The first one is for...
Measuring the electron Yukawa is impossible in Higgs boson decays, H -> e+e- , given the smallness of the electron mass that leads to a vanishingly small decay branching fraction. The only direct method to extract the Higgs-electron coupling is through resonant s-channel production in e+e- collisions running at the Higgs pole mass. Such a measurement is possible at the FCC-ee provided one can...
Precision measurements and searches for new phenomena in the Higgs sector are among the most important goals in particle physics. Experiments at the Future Circular Colliders (FCC) are ideal to study these questions. Electron-positron collisions (FCC-ee) up to an energy of 365 GeV provide the ultimate precision with studies of Higgs boson couplings, mass, total width, and CP parameters, as...
Precision measurements and searches for new phenomena in the Higgs sector are among the most important goals in particle physics. Experiments at the Future Circular Colliders (FCC) are ideal to study these questions. Electron-positron collisions (FCC-ee) up to an energy of 365 GeV provide the ultimate precision with studies of Higgs boson couplings, mass, total width, and CP parameters, as...
The goal of a next-generation e+e- collider is to carry out precision measurements to per-cent level of the Higgs boson properties that are not accessible at the LHC and HL-LHC. In this talk will we present the study of a new concept for a high gradient, high power accelerator with beam characteristics suitable to study the Higgs boson, the Cool Copper Collider (C3), with the goal of...
