What lies beyond? - University of Toronto Physics
... leptons are FREE parameters, spanning 14 orders of magnitude! ...
... leptons are FREE parameters, spanning 14 orders of magnitude! ...
The String Theory Landscape
... supersymmetry breaking and small cosmological constant. Extrapolating these results to large supersymmetry breaking suggests roughly equal numbers of supersymmetric, nonsupersymmetric states. [This statement is controversial] The bulk of the states with small cosmological constant and small Higgs ma ...
... supersymmetry breaking and small cosmological constant. Extrapolating these results to large supersymmetry breaking suggests roughly equal numbers of supersymmetric, nonsupersymmetric states. [This statement is controversial] The bulk of the states with small cosmological constant and small Higgs ma ...
Lecture 5: Physics Beyond the Standard Model and Supersymmetry
... Supersymmetry and Dark Matter • Supersymmetric models often come with a new symmetry, R-parity, that distinguishes Standard Model particles from their superpartners • A superpartner cannot decay to only Standard Model particles. Another superpartner must always be among the decay products • The Ligh ...
... Supersymmetry and Dark Matter • Supersymmetric models often come with a new symmetry, R-parity, that distinguishes Standard Model particles from their superpartners • A superpartner cannot decay to only Standard Model particles. Another superpartner must always be among the decay products • The Ligh ...
PROBset2_2014 - University of Toronto, Particle Physics and
... The Higgs was observed in 2012 (http://en.wikipedia.org/wiki/Higgs_boson) with a mass of 125GeV/c2 . While the particle looks like the Higgs, there is still uncertainty about its properties, due to the fact that the colliding quarks inside the protons do not have a welldefined momentum. The Internat ...
... The Higgs was observed in 2012 (http://en.wikipedia.org/wiki/Higgs_boson) with a mass of 125GeV/c2 . While the particle looks like the Higgs, there is still uncertainty about its properties, due to the fact that the colliding quarks inside the protons do not have a welldefined momentum. The Internat ...
From Electrons to Quarks
... in curvature of the top half of the track after it passed through the lead plate, and curving to the left, meaning its charge is positive. ...
... in curvature of the top half of the track after it passed through the lead plate, and curving to the left, meaning its charge is positive. ...
MC2521062109
... Fig.5 Mass Mechanism of the Higgs Field Each elementary particle acquires its unique set of attributes by interacting with invisible entities called fields. One such field is the electromagnetic field. Each particle interacts with the electromagnetic field in a way that depends on its electric charg ...
... Fig.5 Mass Mechanism of the Higgs Field Each elementary particle acquires its unique set of attributes by interacting with invisible entities called fields. One such field is the electromagnetic field. Each particle interacts with the electromagnetic field in a way that depends on its electric charg ...
Higgs in SUSY - IIT Guwahati
... Higgs discovery is same as MSSM channels, but sensitivity depends on the doublet-singlet mixings. Interestingly, higgs to higgs decays, h→AA decays give rich ...
... Higgs discovery is same as MSSM channels, but sensitivity depends on the doublet-singlet mixings. Interestingly, higgs to higgs decays, h→AA decays give rich ...
Problem Set 7
... The Lyman series is a particular set of spectral lines of the Hydrogen atom. When the Hydrogen atom de-excites from an excited state with principal number ni to a final state with n = 1, it emits a photon in the Lyman series, of wavelength ...
... The Lyman series is a particular set of spectral lines of the Hydrogen atom. When the Hydrogen atom de-excites from an excited state with principal number ni to a final state with n = 1, it emits a photon in the Lyman series, of wavelength ...
Center of mass - Richard Barrans’s web site
... A fireworks rocket is fired vertically upward. At its maximum height of 80 m it explodes and breaks into two pieces of mass 1.4 kg and 0.28 kg. In the explosion 860 J of chemical energy is released and converted into kinetic energy of the fragments. a) What is the speed of each fragment? b) If they ...
... A fireworks rocket is fired vertically upward. At its maximum height of 80 m it explodes and breaks into two pieces of mass 1.4 kg and 0.28 kg. In the explosion 860 J of chemical energy is released and converted into kinetic energy of the fragments. a) What is the speed of each fragment? b) If they ...
Progress Report 1: Search for Low Mass Strings at the LHC with CMS
... TeV provided that spacetime extends into large extra dimensions [1]. Coincidentally, this extension into extra dimensions also provides a mechanism for solving the hierarchy problem, i.e. why the weak force is 1032 times stronger than gravity [3]. MS gives a lower bound on the collider center of mas ...
... TeV provided that spacetime extends into large extra dimensions [1]. Coincidentally, this extension into extra dimensions also provides a mechanism for solving the hierarchy problem, i.e. why the weak force is 1032 times stronger than gravity [3]. MS gives a lower bound on the collider center of mas ...
Introduction and Theoretical Background
... and their interactions. In fact, the SU (3) gauge symmetry coupled to the quarks correctly describes the strong interaction, with the eight SU (3) gauge fields associated to the different colored states of the gluon. Gluons have been observed experimentally [6, 7] and interact with quarks as predicted ...
... and their interactions. In fact, the SU (3) gauge symmetry coupled to the quarks correctly describes the strong interaction, with the eight SU (3) gauge fields associated to the different colored states of the gluon. Gluons have been observed experimentally [6, 7] and interact with quarks as predicted ...
y 1
... Higgs Mechanism: A field fills all of space because of a mechanism called spontaneous symmetry breaking. It ‘sticks’ to particles, making it ‘harder for them to move’. This is what gives quarks and leptons their mass. ...
... Higgs Mechanism: A field fills all of space because of a mechanism called spontaneous symmetry breaking. It ‘sticks’ to particles, making it ‘harder for them to move’. This is what gives quarks and leptons their mass. ...
BHs and effective quantum gravity approaches
... • Way out: asymptotically safe gravity. If the Planck mass and ξ get weaker in the UV, their running can compensate the growth of the amplitude with energy. Or is there a self-healing mechanism at work? ...
... • Way out: asymptotically safe gravity. If the Planck mass and ξ get weaker in the UV, their running can compensate the growth of the amplitude with energy. Or is there a self-healing mechanism at work? ...
The Family Problem: Extension of Standard Model with a
... model. Any model with at least one massive neutrino have to be some sort of extended standard model (i.e. not minimal). ...
... model. Any model with at least one massive neutrino have to be some sort of extended standard model (i.e. not minimal). ...
Particles & Strings - University of Southampton
... brane will only interact with our world gravitationally – it’s dark matter…. ...
... brane will only interact with our world gravitationally – it’s dark matter…. ...
SUPERSYMETRY FOR ASTROPHYSICISTS
... – SM particles have Rp = 1, SUSY particles have Rp = −1 – Requires 2 superpartners in each interaction • Consequence: the lightest SUSY particle (LSP) is stable and cosmologically significant. What is the LSP? 30 Jul – 1 Aug 07 ...
... – SM particles have Rp = 1, SUSY particles have Rp = −1 – Requires 2 superpartners in each interaction • Consequence: the lightest SUSY particle (LSP) is stable and cosmologically significant. What is the LSP? 30 Jul – 1 Aug 07 ...
Evolution of the Atomic Theory
... • 1. a large majority of alpha particles passed directly through the foil. • 2. few particles were deflected when shot at the foil. • 3. rarely, one particle would come back almost directly at the alpha source ...
... • 1. a large majority of alpha particles passed directly through the foil. • 2. few particles were deflected when shot at the foil. • 3. rarely, one particle would come back almost directly at the alpha source ...
pptx file - Northwestern University
... and we study the ways that they interact with each other. • This is particle physics. 7 - November - 2012 ...
... and we study the ways that they interact with each other. • This is particle physics. 7 - November - 2012 ...
Slide 1
... It may be that there is no new physics until we enter the TeV region (LHC). In which case we may well want a ~2 TeV linear collider. WW scattering is an excellent place to look for evidence of the new physics: With 1 year high luminosity should be able to measure WW cross-section differential in ...
... It may be that there is no new physics until we enter the TeV region (LHC). In which case we may well want a ~2 TeV linear collider. WW scattering is an excellent place to look for evidence of the new physics: With 1 year high luminosity should be able to measure WW cross-section differential in ...
Summer Talk - University of Toronto, Particle Physics and
... • Can measure density of all matter, whatever its nature, M , by looking at gravitational ...
... • Can measure density of all matter, whatever its nature, M , by looking at gravitational ...
Minimal Supersymmetric Standard Model
The Minimal Supersymmetric Standard Model (MSSM) is an extension to the Standard Model that realizes supersymmetry. MSSM is the minimal supersymmetrical model as it considers only ""the [minimum] number of new particle states and new interactions consistent with phenomenology"". Supersymmetry pairs bosons with fermions; therefore every Standard Model particle has a partner that has yet to be discovered. If the superparticles are found, it may be analogous to discovering dark matter and depending on the details of what might be found, it could provide evidence for grand unification and might even, in principle, provide hints as to whether string theory describes nature. The failure to find evidence for supersymmetry using the Large Hadron Collider since 2010 has led to suggestions that the theory should be abandoned.