Spontaneous breaking of continuous symmetries
... there is no gauge group singlet contained in any of the products; it is not possible to write any mass term! ...
... there is no gauge group singlet contained in any of the products; it is not possible to write any mass term! ...
subatomic structure
... that are part of probability clouds. Who discovered electrons? What experiment was used? Why were they easy to discover? ...
... that are part of probability clouds. Who discovered electrons? What experiment was used? Why were they easy to discover? ...
The Higgs Boson - University of Toronto Physics
... other bosons associated with fields are thought to be vector bosons: particles that have a spin of l. The photon, gluon and W+, W- and ZO particles, for instance, are spin-1 bosons. Since vector bosons are typically as sociated with the fundamental forces of nature and the Higgs boson is a sca lar ...
... other bosons associated with fields are thought to be vector bosons: particles that have a spin of l. The photon, gluon and W+, W- and ZO particles, for instance, are spin-1 bosons. Since vector bosons are typically as sociated with the fundamental forces of nature and the Higgs boson is a sca lar ...
The Strangeness of Neutron Stars Neutron stars are the super
... called hyperons are likely to occur. Hyperons, such as the Lambda, Sigma, and Xi baryons, differ from neutrons and protons in that they possess at least one constituent strange quark. To model neutron star matter we use the relativistic mean-field theory in which baryons (neutrons, protons, hyperons ...
... called hyperons are likely to occur. Hyperons, such as the Lambda, Sigma, and Xi baryons, differ from neutrons and protons in that they possess at least one constituent strange quark. To model neutron star matter we use the relativistic mean-field theory in which baryons (neutrons, protons, hyperons ...
Studies of effective theories beyond the Standard Model
... The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model ...
... The vast majority of all experimental results in particle physics can be described by the Standard Model (SM) of particle physics. However, neither the existence of neutrino masses nor the mixing in the leptonic sector, which have been observed, can be described within this model. In fact, the model ...
Summary Presentation, Topic 9.2 File
... This force law applies to point masses not extended masses However the interaction between two spherical masses is the same as if the masses were concentrated at the centres of the spheres. ...
... This force law applies to point masses not extended masses However the interaction between two spherical masses is the same as if the masses were concentrated at the centres of the spheres. ...
GPS Timing and Control System of the HAWC Detector. A. U. Abeysekara
... there are several other groups that perform global fits of SUSY using Bayesian as well as frequentist methods. Some recent fits of CMSSM, NUHM1 and NUHM2 may be found in [3–6], whereas results on the pMSSM may be found in [7, 8]. We will soon publish updated results on pMSSM10. 2. Analysis procedure ...
... there are several other groups that perform global fits of SUSY using Bayesian as well as frequentist methods. Some recent fits of CMSSM, NUHM1 and NUHM2 may be found in [3–6], whereas results on the pMSSM may be found in [7, 8]. We will soon publish updated results on pMSSM10. 2. Analysis procedure ...
Operational Status and Power Upgrade Prospects of the
... applications determining the twist-2 parton distribution functions at NNLO in the unpolarized case and at NLO in the polarized case and measuring the strong coupling constant α s (MZ2 ) and the charm quark mass mc from the world deep-inelastic scattering data. This survey summarizes main results of ...
... applications determining the twist-2 parton distribution functions at NNLO in the unpolarized case and at NLO in the polarized case and measuring the strong coupling constant α s (MZ2 ) and the charm quark mass mc from the world deep-inelastic scattering data. This survey summarizes main results of ...
CMS: Compact Muon Solenoid ATLAS: A Toroidal LHC ApparatuS
... It is used to give additional position measurements further from the collision point. It has layers of silicon subdivided into narrow strips, each layer has two sets of strips. On the cylinders, the strips run parallel to the the beam axis, on the disks, the sets go radially. When a charged particle ...
... It is used to give additional position measurements further from the collision point. It has layers of silicon subdivided into narrow strips, each layer has two sets of strips. On the cylinders, the strips run parallel to the the beam axis, on the disks, the sets go radially. When a charged particle ...
Antonio Policicchio
... • Select slow muon-like particles with pT>50 GeV, β<0.95 and mass m = p/βγ • Momentum p taken from track, β measured by muon detector (also required to be consistent with the calorimeter-based measurement) • After selection, background is mainly due to high-pT µ with mis-measured β • estimated by ge ...
... • Select slow muon-like particles with pT>50 GeV, β<0.95 and mass m = p/βγ • Momentum p taken from track, β measured by muon detector (also required to be consistent with the calorimeter-based measurement) • After selection, background is mainly due to high-pT µ with mis-measured β • estimated by ge ...
Where are we going
... After the discovery of Higgs: Where are we going ? Yifang Wang Institute of High Energy Physics, Beijing Feb. 23, 2014，Tsinghua ...
... After the discovery of Higgs: Where are we going ? Yifang Wang Institute of High Energy Physics, Beijing Feb. 23, 2014，Tsinghua ...
Particle physics, from Rutherford to the LHC
... divided by a mass scale of the order of 100 GeV, roughly the mass of the W and Z bosons. In the next order in the expansion we would encounter divergent integrals, which could be made finite by the renormalization of a few new four-fermion interactions, including some with extra factors of momentum. ...
... divided by a mass scale of the order of 100 GeV, roughly the mass of the W and Z bosons. In the next order in the expansion we would encounter divergent integrals, which could be made finite by the renormalization of a few new four-fermion interactions, including some with extra factors of momentum. ...
Elementary Particles Thornton and Rex, Ch. 13
... • The W and Z are massive fi The symmetry between them must be broken. A mechanism for this was proposed by Steven Weinberg and Abdus Salam. Glashow, Weinberg, and Salam won the Nobel Prize in 1979. The simplest model for symmetry breaking predicts a single neutral particle, called the Higgs Boson. ...
... • The W and Z are massive fi The symmetry between them must be broken. A mechanism for this was proposed by Steven Weinberg and Abdus Salam. Glashow, Weinberg, and Salam won the Nobel Prize in 1979. The simplest model for symmetry breaking predicts a single neutral particle, called the Higgs Boson. ...
The Mole - Issaquah Connect
... • The atomic mass of an element expressed in grams is the mass of a mole of the element. • The mass of a mole of an element is its molar mass. Expressed in grams per mole (g/mol). ...
... • The atomic mass of an element expressed in grams is the mass of a mole of the element. • The mass of a mole of an element is its molar mass. Expressed in grams per mole (g/mol). ...
ZimanyiSchool2008novlong
... More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents, and the Standard Model of particle physics should explain this difference. We present a full ab initio calculation of the masses of protons, ...
... More than 99% of the mass of the visible universe is made up of protons and neutrons. Both particles are much heavier than their quark and gluon constituents, and the Standard Model of particle physics should explain this difference. We present a full ab initio calculation of the masses of protons, ...
Slide 1
... does not drop off with distance. Suppose you tried to pull a quark out of a proton… You would have to pull so hard, for so far, that the energy required would be equivalent to the rest-energy of three quarks, in a new atom. ...
... does not drop off with distance. Suppose you tried to pull a quark out of a proton… You would have to pull so hard, for so far, that the energy required would be equivalent to the rest-energy of three quarks, in a new atom. ...
ppt - Infn
... Possibility #1: Both neutrino mass determination give a positive and consistent result (the results intersect on the expected `band’ and both suggest a degenerate mass pattern. (Everybody is happy, even though somewhat surprised since the degenerate scenario is a bit unexpected.) ...
... Possibility #1: Both neutrino mass determination give a positive and consistent result (the results intersect on the expected `band’ and both suggest a degenerate mass pattern. (Everybody is happy, even though somewhat surprised since the degenerate scenario is a bit unexpected.) ...
PHY 551 - Stony Brook University
... photon, boson Z, W+, W(virtual – “off mass-shell” particles) gluon Vertex: point where fermion and boson lines connect. Energy, momentum, charge, lepton and baryon numbers are conserved. Caution: Different plotting conventions in different books (calculations give the same results). It is important ...
... photon, boson Z, W+, W(virtual – “off mass-shell” particles) gluon Vertex: point where fermion and boson lines connect. Energy, momentum, charge, lepton and baryon numbers are conserved. Caution: Different plotting conventions in different books (calculations give the same results). It is important ...
STEM Fair Introduction Beanium Isotopes Lab
... Neutrons are made of one “up” quark and two “down” quarks ...
... Neutrons are made of one “up” quark and two “down” quarks ...
Activity 151-8 Mole Conversions
... videos. See http://www.canyons.edu/Departments/CHEM/GLA/ for additional materials. Part A – The Mole Avogadro’s number serves as a conversion factor to relate the molecular world to the macro world. ...
... videos. See http://www.canyons.edu/Departments/CHEM/GLA/ for additional materials. Part A – The Mole Avogadro’s number serves as a conversion factor to relate the molecular world to the macro world. ...
Discovery of the Higgs Particle
... important ingredient (though not the only one) is a property called spin―a kind of angular momentum carried by a single particle. All electrons (and protons, quarks, and muons) carry the same amount of spin: ½ times Planck’s constant, which has units of length times momentum, or angular momentum. Al ...
... important ingredient (though not the only one) is a property called spin―a kind of angular momentum carried by a single particle. All electrons (and protons, quarks, and muons) carry the same amount of spin: ½ times Planck’s constant, which has units of length times momentum, or angular momentum. Al ...
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.