7 Scattering theory and the S matrix
... One-particle states described in Section 6 play an important role in the S matrix description of elementary particle reactions. This is because we expect that the theory we are developing is going to describe primarily (but certainly not only!) collision-type processes in which long before and long ...
... One-particle states described in Section 6 play an important role in the S matrix description of elementary particle reactions. This is because we expect that the theory we are developing is going to describe primarily (but certainly not only!) collision-type processes in which long before and long ...
arXiv:1412.5987v1 [hep-ex] 18 Dec 2014
... damage detection or internal strain field mapping. The FBG sensors supposed to be located in fiber optic cable mounted in the sample. Furthermore, the key feature of FBGs sensors is that the information about perturbations is encoded in wavelength. Indeed, the main principle of FBG sensors work is t ...
... damage detection or internal strain field mapping. The FBG sensors supposed to be located in fiber optic cable mounted in the sample. Furthermore, the key feature of FBGs sensors is that the information about perturbations is encoded in wavelength. Indeed, the main principle of FBG sensors work is t ...
SMP-J workshop (theory part), Jan 25 2017
... MC: large logs due to soft FSR and due to initial state interference are not under control through the shower s18: large distortion on pT spectrum from FSR (+/-40%) s19: resummation scale variation O(15%) up to qT=100 GeV, but can increase above 50% at higher qT (Q~2mt) s20: renormalisation and fact ...
... MC: large logs due to soft FSR and due to initial state interference are not under control through the shower s18: large distortion on pT spectrum from FSR (+/-40%) s19: resummation scale variation O(15%) up to qT=100 GeV, but can increase above 50% at higher qT (Q~2mt) s20: renormalisation and fact ...
Boundary condition for the distribution function of conduction
... The combination (27Tm/flk)J p 'p in the boundary condition (3.9) can be interpreted as the probability of a single scattering of an electron from state p to state p' , per unit interval ofthe wave numbers k; its summation over p' i p gives the total scattering probability wp of an electron with mome ...
... The combination (27Tm/flk)J p 'p in the boundary condition (3.9) can be interpreted as the probability of a single scattering of an electron from state p to state p' , per unit interval ofthe wave numbers k; its summation over p' i p gives the total scattering probability wp of an electron with mome ...
Report - Jefferson Lab
... and starting to reveal the discovery potential of this successful facility. The most striking examples include the demonstration that the proton charge and magnetic form factors exhibit markedly different behaviors at high momentum transfers; the first exclusive measurements of Deeply Virtual Compto ...
... and starting to reveal the discovery potential of this successful facility. The most striking examples include the demonstration that the proton charge and magnetic form factors exhibit markedly different behaviors at high momentum transfers; the first exclusive measurements of Deeply Virtual Compto ...
lecture 3
... Second line is a quartic equation for B(p2). Can be solved algebraically with four solutions, available in a closed form. Only one solution has the correct p2 → ∞ limit; viz., B(p2) → m. This is the unique physical solution. NB. The equations and their solutions always have a smooth m → 0 limi ...
... Second line is a quartic equation for B(p2). Can be solved algebraically with four solutions, available in a closed form. Only one solution has the correct p2 → ∞ limit; viz., B(p2) → m. This is the unique physical solution. NB. The equations and their solutions always have a smooth m → 0 limi ...
Seminar Quantum Field Theory - Institut für Theoretische Physik III
... In QED the dimension of the coupling constant is the dimension of the electric charge. In our chosen system of unity it is [e] = 0 and therefore we end up with a renormalizable QED. Now have a look on a quantum field theory of Gravitation. The coupling constant of such a theory would be λgrav = Gm. ...
... In QED the dimension of the coupling constant is the dimension of the electric charge. In our chosen system of unity it is [e] = 0 and therefore we end up with a renormalizable QED. Now have a look on a quantum field theory of Gravitation. The coupling constant of such a theory would be λgrav = Gm. ...
I. Parity violation induced by weak neutral currents in atomic
... existence of a weak neutral current containing a neutrino and a hadronic component. Similar events have also been reported in an experiment performed at N.A.L. at much higher energies, where the background problems look very different [4]. Both results seem compatible with the existence of the neutr ...
... existence of a weak neutral current containing a neutrino and a hadronic component. Similar events have also been reported in an experiment performed at N.A.L. at much higher energies, where the background problems look very different [4]. Both results seem compatible with the existence of the neutr ...
Momentum notes
... • You should understand impulse and momentum to relate mass, velocity, and momentum for a moving object or to calculate the total momentum for a system of bodies • You should be able to relate impulse (J) to the change in linear momentum and the average force acting on a body. • You should be able t ...
... • You should understand impulse and momentum to relate mass, velocity, and momentum for a moving object or to calculate the total momentum for a system of bodies • You should be able to relate impulse (J) to the change in linear momentum and the average force acting on a body. • You should be able t ...
Elastic electron-proton scattering
... But unlike the leptons they take part in strong interactions as well as electromagnetic and weak interactions. (Leptons take part only in electromagnetic and weak interactions) Today the Feynman partons are understood to be identical with the quarks postulated by Gell-Mann. HEP Lecture 8 ...
... But unlike the leptons they take part in strong interactions as well as electromagnetic and weak interactions. (Leptons take part only in electromagnetic and weak interactions) Today the Feynman partons are understood to be identical with the quarks postulated by Gell-Mann. HEP Lecture 8 ...
LHC - Università di Pisa
... What is a Cross Section? Differential cross section: d/d: Probability of a scattered particle in a given ...
... What is a Cross Section? Differential cross section: d/d: Probability of a scattered particle in a given ...
Pair production processes and flavor in gauge
... in the final or initial state from a state, which previously or afterwards interacted with the condensate. This condensate interaction is necessary to balance the energy and custodial quantum number. Note that only the sum of all correlation functions is exactly gauge-invariant. So far, these correl ...
... in the final or initial state from a state, which previously or afterwards interacted with the condensate. This condensate interaction is necessary to balance the energy and custodial quantum number. Note that only the sum of all correlation functions is exactly gauge-invariant. So far, these correl ...
Lecture Notes for the 2014 HEP Summer School for Experimental
... the former is that it can be easily generalised to other systems in any number of dimensions, multi-particle systems, or systems with an infinite number of degrees of freedom, where the latter are needed for field theory. ...
... the former is that it can be easily generalised to other systems in any number of dimensions, multi-particle systems, or systems with an infinite number of degrees of freedom, where the latter are needed for field theory. ...
Dr Peter Boyle - School of Physics and Astronomy
... This novel application treated the Kaon as very massive, while treating only the pions as active chiral pseudoscalar mesons. This yielded a much more convergent, and therefore systematically rigorous approach. The approach has been internationally adopted by the RBC, UKQCD, MILC, PACS-CS and ETMC co ...
... This novel application treated the Kaon as very massive, while treating only the pions as active chiral pseudoscalar mesons. This yielded a much more convergent, and therefore systematically rigorous approach. The approach has been internationally adopted by the RBC, UKQCD, MILC, PACS-CS and ETMC co ...
SU(3) symmetry and Baryon wave functions
... • Proposed n and p should be considered as two states of a single entity (nucleon): Analogous to the spin-up/down states of a spin-1/2 particle Isospin: n and p form an isospin doublet (total isospin I=1/2 , 3rd component I3=±1/2) ...
... • Proposed n and p should be considered as two states of a single entity (nucleon): Analogous to the spin-up/down states of a spin-1/2 particle Isospin: n and p form an isospin doublet (total isospin I=1/2 , 3rd component I3=±1/2) ...
The Theory of Collisions between Two Diatomic Molecules
... ultrasonic dispersion and so forth, in order to combine the theory of elementary processes with the experimental data. In partiCular, we are interested in the effects due to the existence of the internal degrees of freedom. Some brief discussions are given for these effects. (§ 10) The numerical exa ...
... ultrasonic dispersion and so forth, in order to combine the theory of elementary processes with the experimental data. In partiCular, we are interested in the effects due to the existence of the internal degrees of freedom. Some brief discussions are given for these effects. (§ 10) The numerical exa ...
On-Shell Methods in Perturbative QCD
... • In this talk analytic on-shell methods: spinors, twistors, unitarity method, on-shell bootstrap approach. Bern, Dixon, Dunbar, Kosower; Bern and Morgan; Cachazo, Svrcek and Witten; Bern, Dixon, Kosower; Bedford, Brandhuber, Spence, Travaglini; Britto, Cachazo, Feng and Witten; Berger, Bern, Dixon, ...
... • In this talk analytic on-shell methods: spinors, twistors, unitarity method, on-shell bootstrap approach. Bern, Dixon, Dunbar, Kosower; Bern and Morgan; Cachazo, Svrcek and Witten; Bern, Dixon, Kosower; Bedford, Brandhuber, Spence, Travaglini; Britto, Cachazo, Feng and Witten; Berger, Bern, Dixon, ...
An Introduction to the Quark Model
... The most common example is when the electric charge is spread out over space and is not just a “point” charge. Example: Scattering off of a charge distribution. The Rutherford cross section is modified to be: ...
... The most common example is when the electric charge is spread out over space and is not just a “point” charge. Example: Scattering off of a charge distribution. The Rutherford cross section is modified to be: ...
lecture 2
... the propagator is exactly the free propagator except that the bare mass is replaced by the renormalised mass. At one-loop order, the vector part of the dressed self energy is proportional to the running gauge parameter. In Landau gauge, that parameter is zero. Hence, the vector part of the renorma ...
... the propagator is exactly the free propagator except that the bare mass is replaced by the renormalised mass. At one-loop order, the vector part of the dressed self energy is proportional to the running gauge parameter. In Landau gauge, that parameter is zero. Hence, the vector part of the renorma ...
Chapter 2 Bose-Einstein condensation
... interactions in alkali gases are negligible. Indeed, some of the most fascinating phenomena in cold and ultracold atomic physics arise from interactions between particles. It is, however, often sufficient to consider only two-body interactions, for which theoretical treatments are comparatively trac ...
... interactions in alkali gases are negligible. Indeed, some of the most fascinating phenomena in cold and ultracold atomic physics arise from interactions between particles. It is, however, often sufficient to consider only two-body interactions, for which theoretical treatments are comparatively trac ...
The quark model and deep inelastic scattering
... were used to examine the properties of beams of strange particles and demonstrated that the strange particles could travel macroscopic distances before decaying. Their stability could be explained if there was a new, almost-conserved, quantum number associated with these strange particles. This ‘str ...
... were used to examine the properties of beams of strange particles and demonstrated that the strange particles could travel macroscopic distances before decaying. Their stability could be explained if there was a new, almost-conserved, quantum number associated with these strange particles. This ‘str ...
PPT
... Start from a QED Lagrangian including electron, proton and em field, under the heavy proton approximation, one can derive a Dirac equation and a Hamiltonian for electron and proved that the time evolution operator is different from the Hamiltonian exactly as we obtained phenomenologically. The nonre ...
... Start from a QED Lagrangian including electron, proton and em field, under the heavy proton approximation, one can derive a Dirac equation and a Hamiltonian for electron and proved that the time evolution operator is different from the Hamiltonian exactly as we obtained phenomenologically. The nonre ...
CERN Teacher Programmes: Welcome to CERN!
... nuclear forces can be traced to the work of Heisenberg in 1932. Chadwick’s announcement of the discovery of the neutron in February of that year led to a flurry of speculation about the nature of the new particle. Heisenberg published three related academic papers in the second half of the year. He ...
... nuclear forces can be traced to the work of Heisenberg in 1932. Chadwick’s announcement of the discovery of the neutron in February of that year led to a flurry of speculation about the nature of the new particle. Heisenberg published three related academic papers in the second half of the year. He ...
Graviton Physics
... probe B[2]. However, despite this obvious parallel, examination of quantum mechanics texts reveals that (with one exception[3]) the case of graviton interactions is not discussed in any detail. There are at least three reasons for this situation: i) the graviton is a spin-two particle, as opposed to ...
... probe B[2]. However, despite this obvious parallel, examination of quantum mechanics texts reveals that (with one exception[3]) the case of graviton interactions is not discussed in any detail. There are at least three reasons for this situation: i) the graviton is a spin-two particle, as opposed to ...