High Energy Physics

Displaying 1813 - 1824 of 3116

boosted top: lessons learnt

Marcel Vos University of Valencia
February 21, 2013

PIRSA:13020141
High Energy Physics
Jet substructure in BSM physics

Jay Wacker Quora Inc.
February 21, 2013

PIRSA:13020143
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 3
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 21, 2013

PIRSA:13020091
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 2
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 20, 2013

PIRSA:13020090
High Energy Physics
Wall-Crossing and Quiver Invariants

Piljin Yi Korea Institute for Advanced Study
February 19, 2013

PIRSA:13020137
High Energy Physics
Qanti-kt: Nondeterministic jet clustering

David Krohn Harvard University
February 19, 2013

PIRSA:13020135
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 1
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 19, 2013

PIRSA:13020089
High Energy Physics
Time Crystals

Alfred Shapere University of Kentucky
February 05, 2013

PIRSA:13020121
High Energy Physics
How to Fall into a Black Hole

Herman Verlinde Princeton University
January 29, 2013

PIRSA:13010020
High Energy Physics
12/13 PSI - Found Quantum Mechanics Lecture 15

Robert Spekkens Perimeter Institute for Theoretical Physics
January 25, 2013

PIRSA:13010084
High Energy Physics
12/13 PSI - String Theory Review Lecture 15

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 25, 2013

PIRSA:13010065
High Energy Physics
12/13 PSI - Standard Model Review Lecture 15

Mark Wise California Institute of Technology (Caltech)
January 25, 2013

PIRSA:13010042
High Energy Physics

boosted top: lessons learnt

Marcel Vos University of Valencia
February 21, 2013

PIRSA:13020141
High Energy Physics
I briefly summarize the potential of the LHC to produce boosted objects and that of the experiments to recognize them as such analyzing jet substructure. Then, I consider boosted top quarks in some detail, the boosted object that has probably been most extensively studied. I evaluate ATLAS ttbar resonance searches to understand how and why dedicated algorithms outperform more classical techniques. Finally, I discuss a number of analyses where boosted techniques are likely to make a difference
Jet substructure in BSM physics

Jay Wacker Quora Inc.
February 21, 2013

PIRSA:13020143
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 3
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 21, 2013

PIRSA:13020091
High Energy Physics
12/13 PSI - Beyond the Standard Model Lecture 2
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 20, 2013

PIRSA:13020090
High Energy Physics
Wall-Crossing and Quiver Invariants

Piljin Yi Korea Institute for Advanced Study
February 19, 2013

PIRSA:13020137
High Energy Physics
We start with a one-slide review of the Kontsevich-Soibelman (KS) solution to the wall-crossing problem and then proceed to direct and comprehensive physics counting of BPS states that eventually connects to KS. We also asks what input data is needed for either approaches to produce complete BPS spectra, and this naturally leads to the BPS quiver representation of BPS states and the new notion of quiver invariants.
We propose a simple geometrical conjecture that can segregate BPS states in Higgs phases of the BPS quiver dynamics to those that experience wall-crossing and those that do not, and give
proofs for all cyclice Abelian quivers. We close with explanation of how physics distinguishes two such classes of BPS states.
Qanti-kt: Nondeterministic jet clustering

David Krohn Harvard University
February 19, 2013

PIRSA:13020135
High Energy Physics
The interpretation of events with jets is often ambiguous, especially for the sort of highly complex events one encounters at the LHC. One often finds that an event interpreted as signal-like using one choice of jet algorithm and radius parameter is no longer signal-like with another, even if the two are very similar. Here we present an extension of the Qjets procedure designed to account for this ambiguity and assign each plausible interpretation of an event a weight, so that events which are unambiguously signal-like carry more influence on one's results than events which are only marginally so. This procedure can be used with any existing analysis employing a sequential recombination algorithm like anti-kT and we will show that through its use the statistical power of an analysis often increases. In particular, we will see that a up to a 20\% improvement in statistical significance can be realized for a Higgs-like analysis searching for a resonance recoiling against an associated vector boson.
12/13 PSI - Beyond the Standard Model Lecture 1
- Itay Yavin McMaster University
- Natalia Toro Stanford University
February 19, 2013

PIRSA:13020089
High Energy Physics
Time Crystals

Alfred Shapere University of Kentucky
February 05, 2013

PIRSA:13020121
High Energy Physics
I consider a class of simple classical systems which exhibit motion in their lowest-energy states and thus spontaneously break time-translation symmetry. Their Lagrangians have nonstandard kinetic terms and their Hamiltonians are multivalued functions of momentum, yet they are perfectly consistent and amenable to quantization. Field theoretical generalizations of these systems may have applications in condensed matter physics and cosmology.
How to Fall into a Black Hole

Herman Verlinde Princeton University
January 29, 2013

PIRSA:13010020
High Energy Physics
In this talk I investigate the "firewall argument", that claims that black hole horizons can not be smooth. Using a holographic model of the black hole horizon as a quantum mechanical membrane, I show how to recover the black hole interior as an emergent smooth region of space-time. The reconstruction makes use of the formalism of quantum error correcting codes. I explain why the horizon of very old black holes appears to be singular, and formulate a complementarity principle that resolves this firewall paradox.
12/13 PSI - Found Quantum Mechanics Lecture 15

Robert Spekkens Perimeter Institute for Theoretical Physics
January 25, 2013

PIRSA:13010084
High Energy Physics
12/13 PSI - String Theory Review Lecture 15

Barton Zwiebach Massachusetts Institute of Technology (MIT) - Department of Physics
January 25, 2013

PIRSA:13010065
High Energy Physics
12/13 PSI - Standard Model Review Lecture 15

Mark Wise California Institute of Technology (Caltech)
January 25, 2013

PIRSA:13010042
High Energy Physics

Title	Speaker(s)	Date	Talk Type	Info link
boosted top: lessons learnt	Marcel Vos	2013-02-21	Conference	View details
Jet substructure in BSM physics	Jay Wacker	2013-02-21	Conference	View details
12/13 PSI - Beyond the Standard Model Lecture 3	Itay Yavin, Natalia Toro	2013-02-21	Course	View details
12/13 PSI - Beyond the Standard Model Lecture 2	Itay Yavin, Natalia Toro	2013-02-20	Course	View details
Wall-Crossing and Quiver Invariants	Piljin Yi	2013-02-19	Scientific Series	View details
Qanti-kt: Nondeterministic jet clustering	David Krohn	2013-02-19	Scientific Series	View details
12/13 PSI - Beyond the Standard Model Lecture 1	Itay Yavin, Natalia Toro	2013-02-19	Course	View details
Time Crystals	Alfred Shapere	2013-02-05	Scientific Series	View details
How to Fall into a Black Hole	Herman Verlinde	2013-01-29	Scientific Series	View details
12/13 PSI - Found Quantum Mechanics Lecture 15	Robert Spekkens	2013-01-25	Course	View details
12/13 PSI - String Theory Review Lecture 15	Barton Zwiebach	2013-01-25	Course	View details
12/13 PSI - Standard Model Review Lecture 15	Mark Wise	2013-01-25	Course	View details

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High Energy Physics

Format results

boosted top: lessons learnt

Jet substructure in BSM physics

12/13 PSI - Beyond the Standard Model Lecture 3

12/13 PSI - Beyond the Standard Model Lecture 2

Wall-Crossing and Quiver Invariants

Qanti-kt: Nondeterministic jet clustering

12/13 PSI - Beyond the Standard Model Lecture 1

Time Crystals

How to Fall into a Black Hole

12/13 PSI - Found Quantum Mechanics Lecture 15

12/13 PSI - String Theory Review Lecture 15

12/13 PSI - Standard Model Review Lecture 15

boosted top: lessons learnt

Jet substructure in BSM physics

12/13 PSI - Beyond the Standard Model Lecture 3

12/13 PSI - Beyond the Standard Model Lecture 2

Wall-Crossing and Quiver Invariants

Qanti-kt: Nondeterministic jet clustering

12/13 PSI - Beyond the Standard Model Lecture 1

Time Crystals

How to Fall into a Black Hole

12/13 PSI - Found Quantum Mechanics Lecture 15

12/13 PSI - String Theory Review Lecture 15

12/13 PSI - Standard Model Review Lecture 15