Particle Physics Gravity and the Standard Model

Lawrence Berkeley Lab Scientist Andre Walker-Loud presents to high-school students and teachers, explaining the nature of the four fundamental forces, and how the standard model of particle physics relates to cosmology. He also talks about Quantum Chromodynamics (QCD) and why his profession is both important and rewarding.

 

The basics of the Higgs boson - Dave Barney and Steve Goldfarb

View full lesson: http://ed.ted.com/lessons/the-basics-of-boson-dave-barney-and-steve-goldfarb

 In 2012, scientists at CERN discovered evidence of the Higgs boson. The what? The Higgs boson is one of two types of fundamental particles and is a particular game-changer in the field of particle physics, proving how particles gain mass. Using the Socratic method, CERN scientists Dave Barney and Steve Goldfarb explain the exciting implications of the Higgs boson.

 Lesson by Dave Barney and Steve Goldfarb, animation by Jeanette Nørgaard.

 

What is Supersymmetry? (Fermilab)

In this video, Fermilab's Dr. Don Lincoln describes the principle of supersymmetry in an easy-to-understand way. A theory is supersymmetric if it treats forces and matter on an equal footing. While supersymmetry is an unproven idea, it is popular with particle physics researchers as a possible next step in particle physics.

 

Fermilab's Dr. Don Lincoln explains some of the reasons that physicists are so interested in supersymmetry. Supersymmetry can explain the low mass of the Higgs boson, provide a source of dark matter, and make it more likely that the known subatomic forces are really different facets of a single, common, force.

 

Quarks and gluons with an unsung hero: Professor Graham Ross

Professor Graham Ross from the University of Oxford, winner of the 2012 Dirac Medal awarded by the Institute of Physics for his work in developing the standard model of particles and forces that has led to many new insights into the origins and nature of the universe. A powerhouse of physics, and one of the UK's best kept secrets, Graham laid out the pathway to the discovery of the gluon, the force carrier for the strong nuclear force, and taught Richard Feynman how quantum chromodynamics could be used to work out the interactions between quarks and gluons.

 

Higgs Boson Update From CERN

"For a report on ABC's Catalyst program (http://www.abc.net.au/catalyst/), I visited the Large Hadron Collider in Switzerland to find out what is being done now that the Higgs Boson has been discovered.

 Although its mass has been measured around 125-126 GeV most of the other properties of the particle remain unknown. Its spin appears to be 0 or 2 but more results are required to nail this down. If it is the standard model Higgs, the spin should be 0, resulting in a fairly symmetric distribution of decay products in the detectors.

 We may know this year if it's not the standard model Higgs - this would be the case if it doesn't decay into specific particles with the expected frequency. However if it is the standard model Higgs, it may take many more years to be certain. The large hadron collider will be shut down in 2013 for upgrades so that higher energies up to 14 TeV can be tested. Right now the LHC is operating at 8 TeV. The next announcement is expected in December."

Other Veritasium videos

 

The Standard Model

Fermilab scientist Don Lincoln describes the Standard Model of particle physics, covering both the particles that make up the subatomic realm and the forces that govern them.

 

Higgs Boson Part III: How to Discover a Particle

How do you know when you've "discovered" a particle? What do we mean by "discovery"?

Other Minute Physics videos

Colliding Particles - Episode 1: Codename Eurostar

The first in a series of films following a team of physicists involved in research at the Large Hadron Collider (LHC) at CERN in Switzerland.

Gavin, Jon and Adam have a cunning plan to find the Higgs Boson, an elusive particle which physicists have been trying to find for over 40 years. One of the main aims of the the LHC is to discover once and for all whether the Higgs actually exists or not, and ‘Eurostar’ might just hold the key to finding out… Visit collidingparticles.com to found out more.


 
Colliding Particles - Episode 1: Codename Eurostar from Mike Paterson on Vimeo.

Higgs Boson Discovery! We think?

Hank gives us the specifics on the "discovery" of the elusive Higgs boson. It is, at the very least, a victory for the scientific method!

Other Sci-Show videos

 

The Higgs Boson, Part II: What is Mass?

What is mass and what does it have to do with the Higgs Boson?

Other Minute Physics videos

Ian Hinchliffe Answers Your Higgs Boson Questions

Ian Hinchliffe, a theoretical physicist who heads Berkeley Lab's sizable contingent with the ATLAS experiment at CERN, answers many of your questions about the Higgs boson.

 

Observation of a New Particle with a Mass of 125 GeV

CMS Spokesperson Joe Incandela talks about the observation of a new particle by CMS.

 At a seminar held at CERN on July 4, as a curtain raiser to the year's major particle physics conference, ICHEP2012 in Melbourne, CMS presented the collaboration's latest preliminary results in the search for the long-sought Higgs particle. The experiment observes a new particle in the mass region around 125 GeV.

 

The Higgs Boson, Part I

First Minute Physics video about the Higgs Boson (two more to come).

Other Minute Physics videos

Higgs Boson Experimental Discovery at CERN

Director General of CERN, Rolf Heuer, and the head scientists from the ATLAS and CMS at CERN in Geneva gives a conference on the discovery of the Higgs Boson at a rest mass energy of 126.5 GeV at a 4.9 confidence level (the maximum limit being 5) . This confidence level, in experimental physics, constitutes a discovery with 98% probability of certainty, making it the first true discovery of the Higgs Boson in human history.

 This is the whole press conference.

 

Interview to prof. Peter Higgs about the latest results on the searches for the Higgs boson

Peter Higgs answers questions about his feelings following the announcement of the discovery of a new particle by ATLAS and CMS that looks like the Higgs boson, at a seminar at CERN on July 4, 2012. He also explains his role in the proposal of a Higgs mechanism. (The video ends abruptly!)

 

Joe Incandela talks about the Higgs Boson

Joe Incandela, CMS Spokesperson, on CMS progress on the search for the Higgs Boson.

 

Theory of Everything (intro)

A brief intro to the current theory of (almost) everything - the Standard Model of particle physics. It's like cake, only universal.

Other Minute Physics videos