Elementary-Particle Physics Revealing the Secrets of Energy and Matter (1998) / Chapter Skim
Currently Skimming:
7 The Role of New Facilities
7 The Role of New Facilities
Pages 101-109
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 101... ...
The tremendous enthusiasm throughout the field for the LHC derives from its power to discover new phenomena associated with breaking electroweak symmetry. Simple, elegant, and unequivocal arguments indicate that there will be clues to the origins of electroweak symmetry breaking in the energy range accessible at the LHC.
|
From page 102... ...
detectors are to find evidence for the mechanism of electroweak symmetry breaking and to uncover and explore the origins of particle masses. The simplest model of how gauge bosons, leptons, and quarks acquire mass, and how electroweak symmetry is broken, includes a single neutral boson, the Higgs particle.
|
From page 103... ...
Some, if not all, Higgs states should be observable at the LHC, and the experiments are likely to uncover evidence for many of the other particles associated with supersymmetry, such as the partners to gauge bosons, quarks, and leptons. A huge amount of tremendously exciting physics would pour forth from the LHC as experimenters untangled the many new particles produced.
|
From page 104... ...
In the field of high-energy physics, there is consensus that it is crucial to explore this mass range, which will point the way for new investigations to explore the TeV energy scale and address major questions of the field, such as the mass scale of Higgs bosoms, the mechanism for electroweak symmetry breaking, and the properties of supersymmetric particles. This is a primary objective for the long-term future of particle physics.
|
From page 105... ...
Various accelerator laboratories in the United States, Japan, and Europe have been carrying out R&D on construction of an electron-positron linear collider that would operate with an energy of more than 1 TeV. This is the most technically mature accelerator research program, with design concepts well ad
|
From page 106... ...
As a result, experimenters at a lepton collider may be able to isolate signals for several additional final states of the Higgs, such as Higgs decays to bottom and charm quarks and Higgs decays to tau leptons. This will allow experimenters to further probe the properties of this new state and test whether this Higgs couples to quarks, leptons, and gauge bosons with the expected strengths.
|
From page 107... ...
For example, detailed studies show that with an energy of 1.5 TeV in the center of mass and a luminosity of 1034 C~2 S-{, experiments at a lepton collider would directly or indirectly find evidence for any charged supersymmetric Higgs particles, if they existed, to a mass of well over 750 GeV and other neutral Higgs states to well over 1 TeV. Therefore, if only one Higgs state was seen, supersymmetry at the electroweak symmetry breaking scale could be ruled out, and scenario 1 would be established.
|
From page 108... ...
If the accelerator concept proves viable, it will be necessary to produce a detailed design, to estimate costs, and to discuss the feasibility of a demonstration accelerator at lower energy to explore the new technologies required. Continued R&D on cost reductions is necessary for the very high energy hadron collider, along with an intensified effort elucidating the physics potential of such an accelerator.
|
From page 109... ...
Finally, the scale of particle physics accelerators is such that this facility will require strong international backing. Countries should rightly compete for the prize of having such a premier scientific instrument, but the commitment to an international collider facility means that we have to recognize and plan for the unfortunate possibility of no forefront accelerator in this country in the early decades of the next century.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.