Flipped SU(5) - cosmology - Arizona State University

... • The scale of the Higgs VEVs is known however, from the Fermi coupling (or alternatively the electroweak gauge couplings at MZ and the Z mass itself) • We solve for the Higgs mixing term m, which is not fixed at the high scale. • We solve for the bilinear soft term B, and enforce compatibility with ...

... • The scale of the Higgs VEVs is known however, from the Fermi coupling (or alternatively the electroweak gauge couplings at MZ and the Z mass itself) • We solve for the Higgs mixing term m, which is not fixed at the high scale. • We solve for the bilinear soft term B, and enforce compatibility with ...

g - Experimental High Energy Physics

... are the energy calibrations as well understood as we think? is this just a statistical fluctuation after all? Time (and additional investigation) will tell ...

... are the energy calibrations as well understood as we think? is this just a statistical fluctuation after all? Time (and additional investigation) will tell ...

Phenomenological study of scalar and pseudo

... Constrained the fit but need an huge amount of cpu-time It’s necessary to find realistical new physics parameters ...

... Constrained the fit but need an huge amount of cpu-time It’s necessary to find realistical new physics parameters ...

Slides - Indico

... • String theory predicts the existence of gravitons and their well-defined interactions: a graviton is a closed string in a very particular low-energy vibrational state. • As closed strings without endpoints, they would not be bound to branes and could move freely between them: if we live on a brane ...

... • String theory predicts the existence of gravitons and their well-defined interactions: a graviton is a closed string in a very particular low-energy vibrational state. • As closed strings without endpoints, they would not be bound to branes and could move freely between them: if we live on a brane ...

Beyond the Standard Model - Southampton High Energy Physics

... matter in the universe is invisible invisible Dark Matter LSP ? LKP ? LTP ? We will look for it We shall look for with the LHC them with the LHC Relics leaving thermal equilibrium in early Universe provide cold dark matter if mass ~ (2.7 K Mplanck)1/2 ~ TeV ...

... matter in the universe is invisible invisible Dark Matter LSP ? LKP ? LTP ? We will look for it We shall look for with the LHC them with the LHC Relics leaving thermal equilibrium in early Universe provide cold dark matter if mass ~ (2.7 K Mplanck)1/2 ~ TeV ...

2009S-FindingHiggs

... •Conservation of energy => invariant mass of two decay particles equals mass of mother particle •Check that the invariant mass of opposite sign leptons is not around Mγ or MZ Mother particle ...

... •Conservation of energy => invariant mass of two decay particles equals mass of mother particle •Check that the invariant mass of opposite sign leptons is not around Mγ or MZ Mother particle ...

Supersymmetry and Lorentz Invariance as Low-Energy

... problems, since the response of the vacuum would consist of the EinsteinHilbert action plus a term that would have the form of a cosmological constant.) We have also not derived Yukawa couplings, scalar boson mass terms, and gaugino masses, so it is necessary to assume that these terms arise from ...

... problems, since the response of the vacuum would consist of the EinsteinHilbert action plus a term that would have the form of a cosmological constant.) We have also not derived Yukawa couplings, scalar boson mass terms, and gaugino masses, so it is necessary to assume that these terms arise from ...

The LHC Experiment at CERN

... All are experimental inputs! • Mass of the Higgs boson itself is not known from theory. Higgs particle has to be hunted out! experimentalists’ job! SM is NOT the complete description of physics at very high energies. e.g., corrections to Higgs mass grows beyond control unless some New Physics, whi ...

... All are experimental inputs! • Mass of the Higgs boson itself is not known from theory. Higgs particle has to be hunted out! experimentalists’ job! SM is NOT the complete description of physics at very high energies. e.g., corrections to Higgs mass grows beyond control unless some New Physics, whi ...

CMSSM A profile likelihood analysis of the with Genetic Algorithms

... mSUGRA/CMSSM • Weak-scale supersymmetry provides a well-known solution to the technical hierarchy problem. • Specializing to a minimal extension of the Standard Model, the MSSM, one can provide a weakly interacting massive particle (WIMP) dark matter candidate, provided R−parity is respected by the ...

... mSUGRA/CMSSM • Weak-scale supersymmetry provides a well-known solution to the technical hierarchy problem. • Specializing to a minimal extension of the Standard Model, the MSSM, one can provide a weakly interacting massive particle (WIMP) dark matter candidate, provided R−parity is respected by the ...

CMSSM

... such terms is that of Minimal Supergravity (mSUGRA), often called the Constrained MSSM (CMSSM) (with minor differences). • This is a four parameter model, with one sign that must be chosen. ...

... such terms is that of Minimal Supergravity (mSUGRA), often called the Constrained MSSM (CMSSM) (with minor differences). • This is a four parameter model, with one sign that must be chosen. ...

Fundamental Particles, Fundamental Questions

... • The Standard Model does not predict how heavy the Higgs boson is, but it does predict how strongly it interacts with all the known particles. For fermions, the interaction is proportional to mass: ...

... • The Standard Model does not predict how heavy the Higgs boson is, but it does predict how strongly it interacts with all the known particles. For fermions, the interaction is proportional to mass: ...

x 1 , x 2

... Parity, charge conjugation, CP Weak decays of quarks Charmonium and upsilon systems ...

... Parity, charge conjugation, CP Weak decays of quarks Charmonium and upsilon systems ...

Outstanding questions: physics beyond the Standard Model

... uniﬁcation of the fundamental forces. Measuring the masses of supersymmetric particles, if they exist, would be a great way of testing predictions based on such theories. Finally, supersymmetry and extra dimensions are key aspects of string theory, the only promising candidate for a consistent quant ...

... uniﬁcation of the fundamental forces. Measuring the masses of supersymmetric particles, if they exist, would be a great way of testing predictions based on such theories. Finally, supersymmetry and extra dimensions are key aspects of string theory, the only promising candidate for a consistent quant ...

Natural Sciences

... • Theory à predictive power (“Laws of Nature”) - Use of Mathematics (“The language of Nature“) - Exploit Symmetries, aim for unifying principles ...

... • Theory à predictive power (“Laws of Nature”) - Use of Mathematics (“The language of Nature“) - Exploit Symmetries, aim for unifying principles ...

Higgs-Boson-Arraigned

... Critically acclaimed as “the missing piece of the theory of everything” and “the God particle,” the boson seemed humbled and restrained as the Los Angeles County Superior Court read out the charges. It wore a pair of dark Oakley sunglasses and a sweater that rendered the subatomic particle almost vi ...

... Critically acclaimed as “the missing piece of the theory of everything” and “the God particle,” the boson seemed humbled and restrained as the Los Angeles County Superior Court read out the charges. It wore a pair of dark Oakley sunglasses and a sweater that rendered the subatomic particle almost vi ...

LHC Physics - UCL HEP Group

... N.B. Our example here was for a single complex scalar and for a U(1) field. In the Standard Model the Higgs is an electroweak SU(2) doublet field, with 4 degrees of freedom. 3 of these are ‘eaten’ by W±, Z0, mass terms leaving a single scalar for the physical Higgs boson. For full SU(2) treatment se ...

... N.B. Our example here was for a single complex scalar and for a U(1) field. In the Standard Model the Higgs is an electroweak SU(2) doublet field, with 4 degrees of freedom. 3 of these are ‘eaten’ by W±, Z0, mass terms leaving a single scalar for the physical Higgs boson. For full SU(2) treatment se ...

PowerPoint ******

... of the Higgs field. The latter constitutes a scalar field, with two neutral and two electrically charged components, and forms a complex doublet of the weak isospin SU(2) symmetry. The field has a "Mexican hat" shaped potential with nonzero strength everywhere (including otherwise empty space), whic ...

... of the Higgs field. The latter constitutes a scalar field, with two neutral and two electrically charged components, and forms a complex doublet of the weak isospin SU(2) symmetry. The field has a "Mexican hat" shaped potential with nonzero strength everywhere (including otherwise empty space), whic ...

Print/Download as PDF - Youth Science Canada

... City: Shuniah, ON School: Claude E. Garton Abstract: This project is about dark matter and how it could account for the missing gravity needed to hold the galaxies in orbit. No one knows exactly what dark matter is. Some of the possible explanations include MOND, axions, WIMPs, MACHOs, neutrinos and ...

... City: Shuniah, ON School: Claude E. Garton Abstract: This project is about dark matter and how it could account for the missing gravity needed to hold the galaxies in orbit. No one knows exactly what dark matter is. Some of the possible explanations include MOND, axions, WIMPs, MACHOs, neutrinos and ...

What is the Higgs? - University of Manchester

... Higgs proposed that empty space (vacuum) is not really empty. Some particles move around unhindered (massless) whilst others are dragged back by the vacuum (massive). In this way the gauge symmetry is more “hidden” rather than “broken”. ...

... Higgs proposed that empty space (vacuum) is not really empty. Some particles move around unhindered (massless) whilst others are dragged back by the vacuum (massive). In this way the gauge symmetry is more “hidden” rather than “broken”. ...

shp_09 - Nevis Laboratories

... MW 100 GeV, the measured values of 1/a are rather different: 137, 29, 10. However, their energy dependences suggest that they approach (sort of!) a common value near 1016 GeV. This is an insanely high energy! The Standard Model provides no explanation for what may happen beyond this unification scal ...

... MW 100 GeV, the measured values of 1/a are rather different: 137, 29, 10. However, their energy dependences suggest that they approach (sort of!) a common value near 1016 GeV. This is an insanely high energy! The Standard Model provides no explanation for what may happen beyond this unification scal ...

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.