scholarly journals Review of physics results from the Tevatron: Searches for new particles and interactions

2015 ◽  
Vol 30 (06) ◽  
pp. 1541007 ◽  
Author(s):  
David Toback ◽  
Lidija Živković
Keyword(s):  
Dark Matter ◽  
Extra Dimensions ◽  
New Physics ◽  
Tevatron Collider ◽  
Time Period ◽  
Hidden Valley ◽  
New Particles

We present a summary of results for searches for new particles and interactions at the Fermilab Tevatron collider by the CDF and the D0 experiments. These include results from Run I as well as Run II for the time period up to July 2014. We focus on searches for supersymmetry, as well as other models of new physics such as new fermions and bosons, various models of excited fermions, leptoquarks, technicolor, hidden-valley model particles, long-lived particles, extra dimensions, dark matter particles and signature-based searches.

scholarly journals Kinetic mixing, dark photons and extra dimensions. Part III. Brane localized dark matter

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Thomas G. Rizzo ◽  
George N. Wojcik
Keyword(s):  
Dark Matter ◽  
Extra Dimensions ◽  
Model Building ◽  
New Physics ◽  
Model Complexity ◽  
Complex Scalar ◽  
Dark Photon ◽  
Complex Models ◽  
The Cost ◽  
D Model

Abstract Extra dimensions have proven to be a very useful tool in constructing new physics models. In earlier work, we began investigating toy models for the 5-D analog of the kinetic mixing/vector portal scenario where the interactions of dark matter, taken to be, e.g., a complex scalar, with the brane-localized fields of the Standard Model (SM) are mediated by a massive U(1)D dark photon living in the bulk. These models were shown to have many novel features differentiating them from their 4-D analogs and which, in several cases, avoided some well-known 4-D model building constraints. However, these gains were obtained at the cost of the introduction of a fair amount of model complexity, e.g., dark matter Kaluza-Klein excitations. In the present paper, we consider an alternative setup wherein the dark matter and the dark Higgs, responsible for U(1)D breaking, are both localized to the ‘dark’ brane at the opposite end of the 5-D interval from where the SM fields are located with only the dark photon now being a 5-D field. The phenomenology of such a setup is explored for both flat and warped extra dimensions and compared to the previous more complex models.

ASTROPARTICLE PHYSICS

2007 ◽  
Vol 22 (30) ◽  
pp. 5550-5560
Author(s):  
A. BETTINI
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Experimental Evidence ◽  
New Physics ◽  
Beyond The Standard Model ◽  
Astroparticle Physics ◽  
The Standard Model ◽  
New Particles

Astroparticle is a very wide, expanding, sector of Physics; this report covers only a fraction of it complementing the plenary reports of Y. Takahashi and K. Inoue. I will focus, in particular, on the experimental evidence of new physics, beyond the Standard Model. Astroparticle and accelerator experiments will give complementary tools in the search of new particles, like those of the dark matter, and new fundamental fields, like the inflaton.

scholarly journals Search for Light New Physics atBFactories

2012 ◽  
Vol 2012 ◽  
pp. 1-13 ◽  
Author(s):  
Bertrand Echenard
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
New Physics ◽  
Large Datasets ◽  
Higgs Bosons ◽  
The Standard Model ◽  
New Particles

Many extensions of the Standard Model include the possibility of light new particles, such as light Higgs bosons or dark matter candidates. These scenarios can be probed using the large datasets collected byBfactories, complementing measurements performed at the LHC. This paper summarizes recent searches for light new physics conducted by theBABARand Belle experiments.

scholarly journals DETECTION AND IDENTIFICATION OF DARK MATTER

2011 ◽  
Vol 01 ◽  
pp. 98-107
Author(s):  
DAVID G. CERDEÑO
Keyword(s):  
Dark Matter ◽  
Particle Physics ◽  
Extra Dimensions ◽  
Direct Detection ◽  
Massive Particle ◽  
New Physics ◽  
Little Higgs ◽  
Weakly Interacting ◽  
Detection And Identification ◽  
Modern Physics

Dark matter is an abundant component of our Universe and its detection and identification constitutes one of the most challenging goals in modern Physics. Particle Physics provides well motivated candidates for dark matter, among which a generic weakly-interacting massive particle (WIMP) stands out for its simplicity and the fact that WIMP candidates can be found in many theories proposing new physics at the TeV scale, such as Supersymmetry, models with Universal Extra Dimensions and Little Higgs Theories. I will review the properties of some of the main WIMP candidates and their detectability (with special emphasis on direct detection experiments). I will also address the strategies that can be used to discriminate among them in the case of a future detection.

scholarly journals The MoEDAL Experiment at the LHC—A Progress Report

Universe ◽  
2019 ◽  
Vol 5 (2) ◽  
pp. 47 ◽  
Author(s):  
James Pinfold
Keyword(s):  
Dark Matter ◽  
Extra Dimensions ◽  
Magnetic Charge ◽  
Center Of Mass ◽  
New Physics ◽  
Progress Report ◽  
Mass Energy ◽  
Planning Stage ◽  
Center Of Mass Energy ◽  
Physics Program

MoEDAL is a pioneering LHC experiment designed to search for anomalously ionizing messengers of new physics. It started data taking at the LHC at a center-of-mass energy of 13 TeV, in 2015. Its ground breaking physics program defines a number of scenarios that yield potentially revolutionary insights into such foundational questions as: Are there extra dimensions or new symmetries? What is the mechanism for the generation of mass? Does magnetic charge exist? What is the nature of dark matter? After a brief introduction, we report on MoEDAL’s progress to date, including our past, current and expected future physics output. We also discuss two new sub-detectors for MoEDAL: MAPP (Monopole Apparatus for Penetrating Particles) now being prototyped at IP8; and MALL (Monopole Apparatus for very Long Lived particles), currently in the planning stage. I conclude with a brief description of our program for LHC Run-3.

MONOJET EVENTS: FROM DARK MATTER TO EXTRA DIMENSIONS, A SEARCH FOR THE EXOTICS USING THE STANDARD MODEL

2013 ◽  
Vol 28 (08) ◽  
pp. 1330012
Author(s):  
PIERRE-HUGUES BEAUCHEMIN ◽  
REYHANEH REZVANI
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Extra Dimensions ◽  
Transverse Energy ◽  
Large Extra Dimensions ◽  
High Energy ◽  
New Physics ◽  
High Transverse Momentum ◽  
Final State ◽  
The Standard Model

Monojet events consist in event topologies with a high transverse momentum jet and a large amount of missing transverse energy. They constitute a promising final state that could lead to phenomena beyond the Standard Model. The theoretical models giving rise to such a signature include the pair production of Weakly Interacting Massive Particles, as dark matter candidates, and models of large extra dimensions. Monojet events can even be used to measure the Standard Model properties of Z boson decays, provided that the precision of the analysis is high enough. Such precision can be achieved by using data-driven determinations of the Standard Model contributions to monojet events. Exotics searches for new physics in such a final state have been performed at all high energy hadronic collider experiments since SPS. The ATLAS and CMS analyses with 7 TeV LHC data provide the latest and most useful information obtained from monojet studies. Their results are presented and discussed in this review paper.

scholarly journals Explaining Dark Matter Without New Physics?

2020 ◽  
Author(s):  
Stephane Maes
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Long Range ◽  
New Physics ◽  
Beyond The Standard Model ◽  
The Standard Model ◽  
New Particles

In a multi-fold universe, gravity emerges from entanglement through the multi-fold mechanisms. As a result, gravity-like effects appear in between entangled particles or regions. When applied to astrophysics, these effects are analogous to additional matter within or around galaxies. This way, we recover behaviors that match expected and observed effects when dark matter would be present or missing. No New Physics is introduced in terms of new particles beyond the Standard Model or modifying long range gravity: only the modeling of gravity as emerging from entanglement, in a multi-fold universe.

scholarly journals THE MoEDAL EXPERIMENT AT THE LHC — A NEW LIGHT ON THE HIGH ENERGY FRONTIER

2014 ◽  
Vol 29 (03) ◽  
pp. 1430003
Author(s):  
JAMES L. PINFOLD
Keyword(s):  
Dark Matter ◽  
Particle Physics ◽  
Extra Dimensions ◽  
Hadron Collider ◽  
High Energy ◽  
Big Bang ◽  
New Physics ◽  
Magnetic Monopoles ◽  
Energy Frontier ◽  
The Big Bang

In 2010, the CERN (European Centre for Particle Physics Research) Research Board unanimously approved MoEDAL, the seventh international experiment at the Large Hadron Collider (LHC), which is designed to search for avatars of new physics signified by highly ionizing particles. A MoEDAL discovery would have revolutionary implications for our understanding of the microcosm, providing insights into such fundamental questions as: do magnetic monopoles exist, are there extra dimensions or new symmetries of nature; what is the mechanism for the generation of mass; what is the nature of dark matter and how did the big bang unfurl at the earliest times.

scholarly journals Displaced new physics at colliders and the early universe before its first second

2021 ◽  
Vol 2021 (5) ◽  
Author(s):  
Lorenzo Calibbi ◽  
Francesco D’Eramo ◽  
Sam Junius ◽  
Laura Lopez-Honorez ◽  
Alberto Mariotti
Keyword(s):  
Dark Matter ◽  
Early Universe ◽  
Upper Bound ◽  
New Physics ◽  
Early History ◽  
Relic Density ◽  
History Of ◽  
Indirect Information ◽  
The Universe

Abstract Displaced vertices at colliders, arising from the production and decay of long-lived particles, probe dark matter candidates produced via freeze-in. If one assumes a standard cosmological history, these decays happen inside the detector only if the dark matter is very light because of the relic density constraint. Here, we argue how displaced events could very well point to freeze-in within a non-standard early universe history. Focusing on the cosmology of inflationary reheating, we explore the interplay between the reheating temperature and collider signatures for minimal freeze-in scenarios. Observing displaced events at the LHC would allow to set an upper bound on the reheating temperature and, in general, to gather indirect information on the early history of the universe.

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