Non-Standard Higgs Physics: CP Studies & Experiments

In summary, this report discusses the various possibilities for new physics beyond the Standard Model that involve non-standard Higgs sectors, including new sources of CP violation and mixing between multiple Higgs bosons or other scalar bosons. These scenarios have important implications for collider physics and cosmology, and are essential for understanding electroweak symmetry breaking. The report covers different theories such as two-Higgs-doublet models, minimal supersymmetric models with CP violation, models with extra gauge groups or Higgs triplets, Little Higgs models, and models with technicolour or other strong dynamics. Each scenario is presented with an introduction to its phenomenology and further contributions on theoretical aspects and potential experimental signatures at the LHC and other colliders.
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http://arxiv.org/abs/hep-ph/0608079

CP Studies and Non-Standard Higgs Physics
Authors: S. Kraml, E. Accomando, A.G. Akeroyd, E. Akhmetzyanova, J. Albert, A. Alves, N. Amapane, M. Aoki, G. Azuelos, S. Baffioni, A. Ballestrero, V. Barger, A. Bartl, P. Bechtle, G. Belanger, A. Belhouari, R. Bellan, A. Belyaev, P. Benes, K. Benslama, W. Bernreuther, M. Besancon, G. Bevilacqua, M. Beyer, M. Bluj, S. Bolognesi, M. Boonekamp, F. Borzumati, F. Boudjema, A. Brandenburg, T. Brauner, C.P. Buszello, J.M. Butterworth, M. Carena, D. Cavalli, G. Cerminara, S.Y. Choi, B. Clerbaux, C. Collard, J.A. Conley, A. Deandrea, S. De Curtis, R. Dermisek, A. De Roeck, G. Dewhirst, M.A. Diaz, J.L. Diaz-Cruz, D.D. Dietrich, M. Dolgopolov, D. Dominici, M. Dubinin, O. Eboli, J. Ellis, N. Evans, L. Fano, J. Ferland, S. Ferrag, S.P. Fitzgerald, H. Fraas, F. Franke, S. Gennai, I.F. Ginzburg, R.M. Godbole, T. Gregoire, et al (101 additional authors not shown)
Comments: Report of the CPNSH workshop, May 2004 - Dec 2005, 542 pages. The complete report as well as its individual chapters are also available from this http URL
Report-no: CERN-2006-009

There are many possibilities for new physics beyond the Standard Model that feature non-standard Higgs sectors. These may introduce new sources of CP violation, and there may be mixing between multiple Higgs bosons or other new scalar bosons. Alternatively, the Higgs may be a composite state, or there may even be no Higgs at all. These non-standard Higgs scenarios have important implications for collider physics as well as for cosmology, and understanding their phenomenology is essential for a full comprehension of electroweak symmetry breaking. This report discusses the most relevant theories which go beyond the Standard Model and its minimal, CP-conserving supersymmetric extension: two-Higgs-doublet models and minimal supersymmetric models with CP violation, supersymmetric models with an extra singlet, models with extra gauge groups or Higgs triplets, Little Higgs models, models in extra dimensions, and models with technicolour or other new strong dynamics. For each of these scenarios, this report presents an introduction to the phenomenology, followed by contributions on more detailed theoretical aspects and studies of possible experimental signatures at the LHC and other colliders.
 
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It also includes a chapter on the cosmological implications of non-standard Higgs sectors. The report concludes with a summary of the current status and future prospects for searches of non-standard Higgs physics at colliders.

The study of CP violation and non-standard Higgs physics is crucial for our understanding of the nature of electroweak symmetry breaking. The Standard Model, while highly successful, does not fully explain the origin of mass and the presence of CP violation in the universe. Therefore, it is important to explore theories beyond the Standard Model that feature non-standard Higgs sectors and their implications for collider physics and cosmology.

This report provides a comprehensive overview of the most relevant theories beyond the Standard Model. It covers a wide range of scenarios, such as two-Higgs-doublet models, supersymmetric models with CP violation, models with extra gauge groups or Higgs triplets, Little Higgs models, models in extra dimensions, and models with technicolour or other new strong dynamics. Each chapter includes an introduction to the phenomenology and a discussion of possible experimental signatures at colliders.

One of the key aspects of non-standard Higgs physics is the potential for new sources of CP violation. This report discusses the implications of CP violation in different theoretical frameworks and its impact on collider signatures. It also addresses the possibility of mixing between multiple Higgs bosons or other new scalar bosons, which could have important consequences for collider physics.

Additionally, the report includes a chapter on the cosmological implications of non-standard Higgs sectors. This is an important aspect to consider, as any new physics beyond the Standard Model must also be consistent with our understanding of the early universe.

Overall, this report provides a valuable resource for researchers interested in non-standard Higgs physics. It summarizes the current state of the field and presents potential avenues for future research. As we continue to search for new physics at colliders, the study of CP violation and non-standard Higgs physics will play a crucial role in our quest to understand the fundamental nature of our universe.
 

FAQ: Non-Standard Higgs Physics: CP Studies & Experiments

1. What is non-standard Higgs physics?

Non-standard Higgs physics refers to the study and exploration of the properties and behavior of the Higgs boson, a subatomic particle that is responsible for giving other particles their mass. This includes investigating deviations from the predictions of the Standard Model, the current theoretical framework of particle physics.

2. What is CP violation in relation to non-standard Higgs physics?

CP violation refers to a phenomenon where the laws of physics do not behave the same way under the combined operations of charge conjugation and parity reversal. In non-standard Higgs physics, CP violation can manifest in the Higgs boson's interactions and decay processes, potentially leading to new discoveries and insights into the nature of matter and the universe.

3. Why is it important to study CP violation and non-standard Higgs physics?

Studying CP violation and non-standard Higgs physics can provide valuable information about the fundamental properties of the Higgs boson and the universe as a whole. It can also help us understand the origin of the matter-antimatter asymmetry in the universe and potentially lead to the discovery of new particles or interactions.

4. How do scientists conduct experiments to study non-standard Higgs physics?

Scientists use particle accelerators, such as the Large Hadron Collider (LHC) at CERN, to collide particles at high energies and produce Higgs bosons. They then study the properties and behavior of the Higgs boson through the particles it decays into. This requires sophisticated detectors and analysis techniques to identify and measure the particles produced in the collisions.

5. What are some current experiments and studies focused on non-standard Higgs physics?

Some current experiments and studies include the LHC experiments ATLAS and CMS, which have discovered and studied the Higgs boson, as well as the Belle II experiment at the SuperKEKB collider in Japan and the DUNE experiment at Fermilab in the United States. These experiments aim to further our understanding of the Higgs boson and its potential deviations from the Standard Model predictions.

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