LHC DISCOVERIES UNFOLDED

2008 ◽  
Vol 23 (22) ◽  
pp. 3441-3459 ◽  
Author(s):  
JOSEPH LYKKEN ◽  
MARIA SPIROPULU
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Hadron Collider ◽  
Large Hadron Collider Data ◽  
The Universe

With the LHC (Large Hadron Collider) data arriving soon, carrying discoveries, we discuss a strategy for synthesizing a set of early measurements illuminating the dark matter of the universe.

scholarly journals Outstanding questions: physics beyond the Standard Model

2012 ◽  
Vol 370 (1961) ◽  
pp. 818-830 ◽  
Author(s):  
John Ellis
Keyword(s):  
Dark Matter ◽  
Higgs Boson ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Particle Physics ◽  
Hadron Collider ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
The Difference ◽  
The Universe

The Standard Model of particle physics agrees very well with experiment, but many important questions remain unanswered, among them are the following. What is the origin of particle masses and are they due to a Higgs boson? How does one understand the number of species of matter particles and how do they mix? What is the origin of the difference between matter and antimatter, and is it related to the origin of the matter in the Universe? What is the nature of the astrophysical dark matter? How does one unify the fundamental interactions? How does one quantize gravity? In this article, I introduce these questions and discuss how they may be addressed by experiments at the Large Hadron Collider, with particular attention to the search for the Higgs boson and supersymmetry.

scholarly journals Dark Matter Searches at Colliders

2018 ◽  
Vol 68 (1) ◽  
pp. 429-459 ◽  
Author(s):  
Antonio Boveia ◽  
Caterina Doglioni
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Particle Physics ◽  
Hadron Collider ◽  
The Future ◽  
Particle Dark Matter ◽  
Near Future

Colliders, among the most successful tools of particle physics, have revealed much about matter. This review describes how colliders contribute to the search for particle dark matter, focusing on the highest-energy collider currently in operation, the Large Hadron Collider (LHC) at CERN. In the absence of hints about the character of interactions between dark matter and standard matter, this review emphasizes what could be observed in the near future, presents the main experimental challenges, and discusses how collider searches fit into the broader field of dark matter searches. Finally, it highlights a few areas to watch for the future LHC program.

scholarly journals The dark phases of the N2HDM

2020 ◽  
Vol 2020 (8) ◽  
Author(s):  
Isabell Engeln ◽  
Pedro Ferreira ◽  
M. Margarete Mühlleitner ◽  
Rui Santos ◽  
Jonas Wittbrodt
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Hadron Collider ◽  
Higgs Doublet ◽  
Tree Level ◽  
Vacuum Structure ◽  
The Standard Model ◽  
Doublet Model ◽  
Specific Phase

Abstract We discuss the dark phases of the Next-to-2-Higgs Doublet model. The model is an extension of the Standard Model with an extra doublet and an extra singlet that has four distinct CP-conserving phases, three of which provide dark matter candidates. We discuss in detail the vacuum structure of the different phases and the issue of stability at tree-level of each phase. Taking into account the most relevant experimental and theoretical constraints, we found that there are combinations of measurements at the Large Hadron Collider that could single out a specific phase. The measurement of h125 → γγ together with the discovery of a new scalar with specific rates to τ+τ− or γγ could exclude some phases and point to a specific phase.

scholarly journals Leveraging the Economic Potential of FCC’s Technologies and Processes

2020 ◽  
pp. 85-91
Author(s):  
Linn Kretzschmar
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
New Physics ◽  
Accelerator Complex ◽  
The Core ◽  
Electron Positron ◽  
Circular Particle ◽  
The Standard Model ◽  
New Energy ◽  
The Universe

Abstract An international consortium of more than 150 organizations worldwide is studying the feasibility of various future particle colliders to expand our understanding of the inner workings of the Universe. At the core of the Future Circular Collider (FCC) study is the design of a 100 km long circular particle collider infrastructure that could extend CERN’s current accelerator complex with an integral research program that spans 70 years. The first step would be an intensity-frontier electron-positron collider allowing to study with precision the Higgs couplings with many of the Standard Model particles and search with high-precision for new physics while the ultimate goal is to build a proton collider with a c.m.s collision energy seven times larger than the Large Hadron Collider. Hosted in the same tunnel and profiting from the new infrastructure, FCC-hh would allow to explore a new energy regime where new physics may be at play.

scholarly journals Anomalous leptonic U(1) symmetry: Syndetic origin of the QCD axion, weak-scale dark matter, and radiative neutrino mass

2018 ◽  
Vol 33 (03) ◽  
pp. 1850024 ◽  
Author(s):  
Ernest Ma ◽  
Diego Restrepo ◽  
Óscar Zapata
Keyword(s):  
Dark Matter ◽  
Large Hadron Collider ◽  
Standard Model ◽  
Neutrino Mass ◽  
Hadron Collider ◽  
Neutrino Masses ◽  
Weak Scale ◽  
The Standard Model

The well-known leptonic U(1) symmetry of the Standard Model (SM) of quarks and leptons is extended to include a number of new fermions and scalars. The resulting theory has an invisible QCD axion (thereby solving the strong CP problem), a candidate for weak-scale dark matter (DM), as well as radiative neutrino masses. A possible key connection is a color-triplet scalar, which may be produced and detected at the Large Hadron Collider.

The Origin of Mass

2017 ◽  
Author(s):  
John Iliopoulos
Keyword(s):  
Large Hadron Collider ◽  
Hadron Collider ◽  
Big Bang ◽  
Symmetry Principle ◽  
Zero Mass ◽  
Physical Intuition ◽  
The World ◽  
Guided Tour ◽  
The Big Bang ◽  
The Universe

Why do most ’elementary particles’ which form the constituents of all matter have a non-zero mass? Strange question, apparently in contradiction with our physical intuition. In this little book we attempt to explain that the question is far from being trivial and that the answer can be found in the recent discovery of a new particle in the Large Hadron Collider (LHC) at CERN near Geneva. We offer the reader a guided tour, starting from the tiny fractions of a second after the Big Bang, when all particles have been created, to the present experiments we perform in our laboratories. We show that the Universe follows a profound symmetry principle which seems to determine the structure of the world.

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