High Energy Physics

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Extra Dimensions, the Cosmological Constant Problem and the LHC

Cliff Burgess McMaster University
January 10, 2012

PIRSA:12010130
High Energy Physics
Advanced Quantum Field Theory - Lecture 1

Cliff Burgess McMaster University
January 10, 2012

PIRSA:12010139
High Energy Physics
Standard Model (Review) - Lecture 7
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 10, 2012

PIRSA:12010008
High Energy Physics

High Energy Physics
Standard Model (Review) - Lecture 6
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 09, 2012

PIRSA:12010007
High Energy Physics

High Energy Physics
On Symmetric and Asymmetric Light Dark Matter

Tongyan Lin University of California, San Diego
January 06, 2012

PIRSA:12010118
High Energy Physics
Goldstone Fermion Dark Matter

Jing Shao Syracuse University
January 06, 2012

PIRSA:12010121
High Energy Physics
Standard Model (Review) - Lecture 5
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 06, 2012

PIRSA:12010004
High Energy Physics
Standard Model (Review) - Lecture 4
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 05, 2012

PIRSA:12010003
High Energy Physics
Standard Model (Review) - Lecture 3
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 04, 2012

PIRSA:12010002
High Energy Physics
Standard Model (Review) - Lecture 2
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 03, 2012

PIRSA:12010001
High Energy Physics
Standard Model (Review) - Lecture 1
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 02, 2012

PIRSA:12010000
High Energy Physics

High Energy Physics
Warm Baryogenesis

Joao Rosa University of Edinburgh
December 13, 2011

PIRSA:11120064
High Energy Physics

Extra Dimensions, the Cosmological Constant Problem and the LHC

Cliff Burgess McMaster University
January 10, 2012

PIRSA:12010130
High Energy Physics
Two uncertainties define the prevailing attitude toward the LHC: uncertainty about what new physics it may find (if any); together with dissatisfaction with the "technical naturalness" arguments which (when applied to the hierarchy problem) help suggest what it should be looking for. The dissatisfaction arises because of a wide-spread despair about finding a technically natural solution to the cosmological constant problem, despite much effort spent seeking it. In this talk I describe a mechanism within supersymmetric extra-dimensional theories that allows the low-energy effective cosmological constant naturally to be of order the Kaluza-Klein scale. If this is the solution to the cosmological constant problem, then it requires extra dimensions that are both very supersymmetric and large enough to be relevant to the LHC (with the - so far successful - prediction that no MSSM particles will be discovered there, despite the low-energy supersymmetry)
Advanced Quantum Field Theory - Lecture 1

Cliff Burgess McMaster University
January 10, 2012

PIRSA:12010139
High Energy Physics
Standard Model (Review) - Lecture 7
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 10, 2012

PIRSA:12010008
High Energy Physics

High Energy Physics
Standard Model (Review) - Lecture 6
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 09, 2012

PIRSA:12010007
High Energy Physics

High Energy Physics
On Symmetric and Asymmetric Light Dark Matter

Tongyan Lin University of California, San Diego
January 06, 2012

PIRSA:12010118
High Energy Physics
I will discuss cosmological, astrophysical and collider constraints on thermal dark matter with mass in the range 1 MeV to 10 GeV. CMB observations can be evaded if the DM relic density is sufficiently asymmetric, while collider constraints generally require sufficiently light mediators. These light mediators can give rise to significant DM self-interactions, and I will describe bounds on such interactions from dark matter halo shapes. Finally, I will describe how these constraints map onto the parameter space of DM-electron and DM-nucleon scattering cross sections for direct detection.
Goldstone Fermion Dark Matter

Jing Shao Syracuse University
January 06, 2012

PIRSA:12010121
High Energy Physics
We propose that the fermionic superpartner of a weak-scale Goldstone boson can be a nat- ural WIMP candidate. The p-wave annihilation of this `Goldstone fermion' into pairs of Gold- stone bosons automatically generates the correct relic abundance, whereas the XENON100 direct detection bounds are evaded due to suppressed couplings to the Standard Model. Further, it is able to avoid indirect detection constraints because the relevant s-wave annihi- lations are small. The interactions of the Goldstone supermultiplet can induce non-standard Higgs decays and novel collider phenomenology.
Standard Model (Review) - Lecture 5
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 06, 2012

PIRSA:12010004
High Energy Physics
Standard Model (Review) - Lecture 4
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 05, 2012

PIRSA:12010003
High Energy Physics
Standard Model (Review) - Lecture 3
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 04, 2012

PIRSA:12010002
High Energy Physics
Standard Model (Review) - Lecture 2
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 03, 2012

PIRSA:12010001
High Energy Physics
Standard Model (Review) - Lecture 1
- Natalia Toro Stanford University
- Philip Schuster Stanford University
January 02, 2012

PIRSA:12010000
High Energy Physics

High Energy Physics
Warm Baryogenesis

Joao Rosa University of Edinburgh
December 13, 2011

PIRSA:11120064
High Energy Physics
We show that a baryon asymmetry can be generated by dissipative effects during warm inflation via a supersymmetric two-stage mechanism, where the inflaton is coupled to heavy mediator fields that then decay into light species through B- and CP-violating interactions. In contrast with thermal GUT baryogenesis models, the temperature during inflation is always below the heavy mass threshold, simultaneously suppressing thermal and quantum corrections to the inflaton potential and the production of dangerous GUT relics. This naturally gives a small baryon asymmetry close to the observed value, although parametrically larger values may be diluted after inflation along with any gravitino overabundance. Furthermore, this process yields baryon isocurvature perturbations within the range of future experiments, making this an attractive and testable model of GUT baryogenesis.

Title	Speaker(s)	Date	Talk Type	Info link
Extra Dimensions, the Cosmological Constant Problem and the LHC	Cliff Burgess	2012-01-10	Scientific Series	View details
Advanced Quantum Field Theory - Lecture 1	Cliff Burgess	2012-01-10	Course	View details
Standard Model (Review) - Lecture 7	Natalia Toro, Philip Schuster	2012-01-10	Course	View details
Standard Model (Review) - Lecture 6	Natalia Toro, Philip Schuster	2012-01-09	Course	View details
On Symmetric and Asymmetric Light Dark Matter	Tongyan Lin	2012-01-06	Scientific Series	View details
Goldstone Fermion Dark Matter	Jing Shao	2012-01-06	Scientific Series	View details
Standard Model (Review) - Lecture 5	Natalia Toro, Philip Schuster	2012-01-06	Course	View details
Standard Model (Review) - Lecture 4	Natalia Toro, Philip Schuster	2012-01-05	Course	View details
Standard Model (Review) - Lecture 3	Natalia Toro, Philip Schuster	2012-01-04	Course	View details
Standard Model (Review) - Lecture 2	Natalia Toro, Philip Schuster	2012-01-03	Course	View details
Standard Model (Review) - Lecture 1	Natalia Toro, Philip Schuster	2012-01-02	Course	View details
Warm Baryogenesis	Joao Rosa	2011-12-13	Scientific Series	View details

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Format results

Extra Dimensions, the Cosmological Constant Problem and the LHC

Advanced Quantum Field Theory - Lecture 1

Standard Model (Review) - Lecture 7

Standard Model (Review) - Lecture 6

On Symmetric and Asymmetric Light Dark Matter

Goldstone Fermion Dark Matter

Standard Model (Review) - Lecture 5

Standard Model (Review) - Lecture 4

Standard Model (Review) - Lecture 3

Standard Model (Review) - Lecture 2

Standard Model (Review) - Lecture 1

Warm Baryogenesis

Extra Dimensions, the Cosmological Constant Problem and the LHC

Advanced Quantum Field Theory - Lecture 1

Standard Model (Review) - Lecture 7

Standard Model (Review) - Lecture 6

On Symmetric and Asymmetric Light Dark Matter

Goldstone Fermion Dark Matter

Standard Model (Review) - Lecture 5

Standard Model (Review) - Lecture 4

Standard Model (Review) - Lecture 3

Standard Model (Review) - Lecture 2

Standard Model (Review) - Lecture 1

Warm Baryogenesis