Introduction to Particle Physics
... Can the large number of free parameters in the SM (19 or even larger for massive s) be reduced? Why is the electric charge of electron and proton equal? Should the gauge couplings unify at high energies? In the SM they do not! Why are ~17 orders of magnitude between EW and Planck scale? How can the ...
... Can the large number of free parameters in the SM (19 or even larger for massive s) be reduced? Why is the electric charge of electron and proton equal? Should the gauge couplings unify at high energies? In the SM they do not! Why are ~17 orders of magnitude between EW and Planck scale? How can the ...
Lecture 5: Physics Beyond the Standard Model and Supersymmetry
... physics through a finite number of parameters (19) • These parameters are the particle masses, interaction strengths, etc • A fundamental description of physics at all energy scales would determine the masses and interaction strengths from first principles. In the Standard Model these are parameters ...
... physics through a finite number of parameters (19) • These parameters are the particle masses, interaction strengths, etc • A fundamental description of physics at all energy scales would determine the masses and interaction strengths from first principles. In the Standard Model these are parameters ...
unification of couplings
... model of electroweak interactions to be "obviously wrong" just because it requires such ugly hypercharge assignments. That was going too far, but it still seems fair to call the model "obviously incomplete" for this reason. Now we must describe two daunting difficulties that such attempts at unifica ...
... model of electroweak interactions to be "obviously wrong" just because it requires such ugly hypercharge assignments. That was going too far, but it still seems fair to call the model "obviously incomplete" for this reason. Now we must describe two daunting difficulties that such attempts at unifica ...
PARTICLE PHYSICS BEYOND THE STANDARD MODEL
... we remind ourselves that the main arguments for its existence are tied to the underlying theory at high energies: unitarity and renormalizability of the Standard Model with the observed Higgs boson imply that we can extrapolate our experimental and theoretical understanding from the electroweak scal ...
... we remind ourselves that the main arguments for its existence are tied to the underlying theory at high energies: unitarity and renormalizability of the Standard Model with the observed Higgs boson imply that we can extrapolate our experimental and theoretical understanding from the electroweak scal ...
Antonio Policicchio
... • Limits on σ × Acceptance for a simple Gaussian resonance or a Breit-Wigner narrow resonance decaying to dijets • Specific models: excited quarks, color-octet scalars, W’, W*, BH, and ED ...
... • Limits on σ × Acceptance for a simple Gaussian resonance or a Breit-Wigner narrow resonance decaying to dijets • Specific models: excited quarks, color-octet scalars, W’, W*, BH, and ED ...
ppt
... 2. Simulate detector response 3. Analyse simulated data as if it were real – Response to known input can be calculated – Also used in detector design • Computer intensive • Must be carefully tuned and checked Joel Goldstein, RAL ...
... 2. Simulate detector response 3. Analyse simulated data as if it were real – Response to known input can be calculated – Also used in detector design • Computer intensive • Must be carefully tuned and checked Joel Goldstein, RAL ...
Particle Physics what do we know?
... • What are the fundamental building blocks of the universe? • What are the interactions between them? • How can we explain the universe? ...
... • What are the fundamental building blocks of the universe? • What are the interactions between them? • How can we explain the universe? ...
The Standard Model and its Simple Extensions
... What do we know about the Higgs? • In the Standard Model only one free parameter left (m2H = 2λv 2 ) • LEP searches: mH > 114 GeV • Higgs couples to mass ⇒ partial widths proportional to particle masses • Coupling to massless particles via loops ...
... What do we know about the Higgs? • In the Standard Model only one free parameter left (m2H = 2λv 2 ) • LEP searches: mH > 114 GeV • Higgs couples to mass ⇒ partial widths proportional to particle masses • Coupling to massless particles via loops ...
The Large Hadron Collider (LHC), the Higgs boson and
... design of the Al-stabilized thin SC (superconducting) solenoid of the ZEUS detector (HERA at Desy, Hamburg); the development in 1998 of record Jc Nb3Sn superconductor with Europa Metalli, the construction of the first prototype of the LHC 9 T magnet dipole for CERN; the development of the super-stab ...
... design of the Al-stabilized thin SC (superconducting) solenoid of the ZEUS detector (HERA at Desy, Hamburg); the development in 1998 of record Jc Nb3Sn superconductor with Europa Metalli, the construction of the first prototype of the LHC 9 T magnet dipole for CERN; the development of the super-stab ...
Origins of Mass - Massachusetts Institute of Technology
... useful in the approximate description of baryon-dominated matter at low energy – that is, the standard “matter” of everyday life, and of most of science and engineering – but it originates in a highly contingent and non-trivial way from more basic concepts. Most of the mass of standard matter, by fa ...
... useful in the approximate description of baryon-dominated matter at low energy – that is, the standard “matter” of everyday life, and of most of science and engineering – but it originates in a highly contingent and non-trivial way from more basic concepts. Most of the mass of standard matter, by fa ...
cern07-lecture
... • Top quark is the heaviest known fundamental particle – Today: mtop=170.9+-1.8 GeV – Run 1: mtop=178+-4.3 GeV/c2 – Is this large mass telling us something about electroweak symmetry breaking? • Top yukawa coupling: •/(√2 mtop) = 0.997+-0.010
...
... • Top quark is the heaviest known fundamental particle – Today: mtop=170.9+-1.8 GeV – Run 1: mtop=178+-4.3 GeV/c2 – Is this large mass telling us something about electroweak symmetry breaking? • Top yukawa coupling: •
Particle Fever
... Part 4 Success! (37 minutes) The last section of the film summarizes the key theoretical issues, and the implications of finding a Higgs particle of a given mass: if it is near 115 GeV, then it will be good news for the theoretical physicists, confirming their theories and predicting more interestin ...
... Part 4 Success! (37 minutes) The last section of the film summarizes the key theoretical issues, and the implications of finding a Higgs particle of a given mass: if it is near 115 GeV, then it will be good news for the theoretical physicists, confirming their theories and predicting more interestin ...
phys3313-fall12-112812
... Elementary Particle Interactions • How do these particles interact?? – All particles, including photons and neutrinos, participate in ...
... Elementary Particle Interactions • How do these particles interact?? – All particles, including photons and neutrinos, participate in ...
efectos de la presión hidrostática sobre la energía de enlace para
... case, is stable and therefore, in principle, can be a dark matter candidate. Here we study the implications for DM and possible collider signatures of this model. Our analysis is done in a particular scenario in which the Yukawa couplings of N3 are larger than those from N 2 and the right-handed neu ...
... case, is stable and therefore, in principle, can be a dark matter candidate. Here we study the implications for DM and possible collider signatures of this model. Our analysis is done in a particular scenario in which the Yukawa couplings of N3 are larger than those from N 2 and the right-handed neu ...
Field Theory and Standard Model
... “fuzzy” light cone, which gives a non-negligible propagation probability for the electron even for slightly spacelike distances, as long as ...
... “fuzzy” light cone, which gives a non-negligible propagation probability for the electron even for slightly spacelike distances, as long as ...
SOME REMARKS ON THE BOSON MASS SPECTRUM IN A 3-3
... method suggested a natural see-saw mechanism [5], embedded in order to keep consistency with the tiny observed masses in the neutrino sector. However, a special and unexplored yet opportunity is offered by our method. It was for the first time mentioned by Cotăescu in a communication [40] on the wel ...
... method suggested a natural see-saw mechanism [5], embedded in order to keep consistency with the tiny observed masses in the neutrino sector. However, a special and unexplored yet opportunity is offered by our method. It was for the first time mentioned by Cotăescu in a communication [40] on the wel ...
The Hierarchy Problem in the Standard Model and
... The Standard Model describes the elementary particles of our world and their interactions with remarkable success. At first sight, there seems no reason why it should not be the ultimate theory of nature. However, a closer look reveals that there are good reasons for expecting physics beyond the Sta ...
... The Standard Model describes the elementary particles of our world and their interactions with remarkable success. At first sight, there seems no reason why it should not be the ultimate theory of nature. However, a closer look reveals that there are good reasons for expecting physics beyond the Sta ...
instructions for the preparation of contributions to cern reports
... remarkable fact strong force between quarks increases with quark separation. Excepting gravity, a consistent description of matter and interactions between matter as we currently know it, now exists. The only particle not yet discovered in the Standard Model is the Higgs particle that is responsible ...
... remarkable fact strong force between quarks increases with quark separation. Excepting gravity, a consistent description of matter and interactions between matter as we currently know it, now exists. The only particle not yet discovered in the Standard Model is the Higgs particle that is responsible ...