CH17 Self Assessment
... state that β-- decay is caused by a neutron decaying into a proton, an electron, and an antineutrino state that β+ decay is caused by a proton decaying into a neutron, a positron, and a neutrino state the quark changes that occur: ...
... state that β-- decay is caused by a neutron decaying into a proton, an electron, and an antineutrino state that β+ decay is caused by a proton decaying into a neutron, a positron, and a neutrino state the quark changes that occur: ...
Elementary Particles: A Brief History
... initially in cosmic ray interactions and then with accelerators with their energies steadily increasing over the years. They were also complemented by new and more sensitive detection methods. These particles both confirmed existing theories of particle physics, and inspired new ideas about the work ...
... initially in cosmic ray interactions and then with accelerators with their energies steadily increasing over the years. They were also complemented by new and more sensitive detection methods. These particles both confirmed existing theories of particle physics, and inspired new ideas about the work ...
PHY492: Nuclear & Particle Physics Lecture 22 Way Beyond the Standard Model
... SU(5) has 12 more gauge particles • Three with charge =-1/3, in three”colors” (YR, YG, YB) ...
... SU(5) has 12 more gauge particles • Three with charge =-1/3, in three”colors” (YR, YG, YB) ...
May 21, 2010 17:21 WSPC/INSTRUCTION FILE fortunato˙kazimieriz
... point, display behaviors qualitatively similar to those of the even core and they agree qualitatively with the model based on the E(5/4) boson-fermion symmetry. We describe then the U BF (5) to SU BF (3) transition when a fermion is allowed to occupy the orbits j = 1/2, 3/2, 5/2. The additional part ...
... point, display behaviors qualitatively similar to those of the even core and they agree qualitatively with the model based on the E(5/4) boson-fermion symmetry. We describe then the U BF (5) to SU BF (3) transition when a fermion is allowed to occupy the orbits j = 1/2, 3/2, 5/2. The additional part ...
Rutherford Model
... like objects being repelled by an electric force, not like those after a collision. This led him to believe that there was a large positive charge repelling the positively charged alpha particles. He said that it must be in the center of the atom and he called it the nucleus. ...
... like objects being repelled by an electric force, not like those after a collision. This led him to believe that there was a large positive charge repelling the positively charged alpha particles. He said that it must be in the center of the atom and he called it the nucleus. ...
The Royal Society of Edinburgh The Large Hadron Collider – What It
... Professor Peter Clarke FRSE Professor of Physics, University of Edinburgh Tuesday 2 June 2015 Greenwood Conference Centre, Dreghorn, Irvine Report by Kate Kennedy There are many things we do not know about the Universe, including what the nature is of the dark matter of which most of it is made; why ...
... Professor Peter Clarke FRSE Professor of Physics, University of Edinburgh Tuesday 2 June 2015 Greenwood Conference Centre, Dreghorn, Irvine Report by Kate Kennedy There are many things we do not know about the Universe, including what the nature is of the dark matter of which most of it is made; why ...
PH4041 – Atomic, Nuclear, and Particle Physics
... interactions, classification of particles as intermediate bosons, leptons or hadrons. Standard model of leptons and quarks. Aims & Objectives To present an introductory account of atomic and nuclear physics and elementary particle physics, including to enhance our understanding of the internal str ...
... interactions, classification of particles as intermediate bosons, leptons or hadrons. Standard model of leptons and quarks. Aims & Objectives To present an introductory account of atomic and nuclear physics and elementary particle physics, including to enhance our understanding of the internal str ...
The LHC Experiment at CERN
... account interaction of particles with Higgs. In vacuum, photon has zero mass and velocity = c. But in glass velocity < c photon has an effective mass! This is the effect of photon interacting with EM field of matter. Higgs is a quantum field permeating the universe. In analogy, particles acquire m ...
... account interaction of particles with Higgs. In vacuum, photon has zero mass and velocity = c. But in glass velocity < c photon has an effective mass! This is the effect of photon interacting with EM field of matter. Higgs is a quantum field permeating the universe. In analogy, particles acquire m ...
Journey into the Microcosm – The Story of Elementary Particles
... gauge theories. He does an excellent job in discussing the standard model of particle physics, going into concepts like spontaneous symmetry breaking and non-abelian gauge theories with illuminating examples. Interspersed in the text, as side attractions, are thumbnail sketches of the people and per ...
... gauge theories. He does an excellent job in discussing the standard model of particle physics, going into concepts like spontaneous symmetry breaking and non-abelian gauge theories with illuminating examples. Interspersed in the text, as side attractions, are thumbnail sketches of the people and per ...
Probing the Structure of Matter - Rutgers Physics
... • Missing ingredient of the Standard Model (SM) • Now have complete mathematically consistent theory • Agrees with all experiments down to 10-18 m scale ...
... • Missing ingredient of the Standard Model (SM) • Now have complete mathematically consistent theory • Agrees with all experiments down to 10-18 m scale ...
Modern view of matter and the universe
... • A lot of “new” particles are discovered when people probe into the structure of ...
... • A lot of “new” particles are discovered when people probe into the structure of ...
ppt - HEP Educational Outreach
... – Aims to describe the most fundamental objects in nature and the force laws that govern their interactions. – Currently: Standard Model (SM) • 6 Quarks, 6 leptons, and force carriers (g, gluon, W±, Z) • Works very well, but certainly an effective theory ...
... – Aims to describe the most fundamental objects in nature and the force laws that govern their interactions. – Currently: Standard Model (SM) • 6 Quarks, 6 leptons, and force carriers (g, gluon, W±, Z) • Works very well, but certainly an effective theory ...
Experimental Tests of the Standard Model
... The Standard Model is our best attempt at this - assess how successfult in this lecture. 6 quarks, 6 leptons, 3 exchange bosons + antiparticles. Two independent forces (electroweak and QCD). 19 free parameters: particle masses, mixing angles, CP-violating term, couplings.... Consistent method of int ...
... The Standard Model is our best attempt at this - assess how successfult in this lecture. 6 quarks, 6 leptons, 3 exchange bosons + antiparticles. Two independent forces (electroweak and QCD). 19 free parameters: particle masses, mixing angles, CP-violating term, couplings.... Consistent method of int ...
120lec4 (WP)
... •classification according to interaction: hadrons, leptons, gauge bosons •classification according to spin: fermions, bosons; baryons, mesons •antiparticles Particle characteristics There are many types of elementary particles: several hundred unique particles have already been identified, and the t ...
... •classification according to interaction: hadrons, leptons, gauge bosons •classification according to spin: fermions, bosons; baryons, mesons •antiparticles Particle characteristics There are many types of elementary particles: several hundred unique particles have already been identified, and the t ...
history of particle physics (PowerPoint 13.93MB)
... Particle and Nuclear Physics are the studies to answer this question ...
... Particle and Nuclear Physics are the studies to answer this question ...
aspen_pb - Particle Theory
... how do we see a hidden dimension? ? what particles can move in that dimension ? how big is that dimension ? what is its shape ...
... how do we see a hidden dimension? ? what particles can move in that dimension ? how big is that dimension ? what is its shape ...
What is a Force?
... He predicted the properties the new particle should have. The neutral pion (π0) was discovered in 1947 and it was thought to be totally responsible for the strong force. We now know this is not the case, because protons are actually built of simpler particles. BUT the idea of “exchange particles” be ...
... He predicted the properties the new particle should have. The neutral pion (π0) was discovered in 1947 and it was thought to be totally responsible for the strong force. We now know this is not the case, because protons are actually built of simpler particles. BUT the idea of “exchange particles” be ...
Chapter 15 PowerPoint
... • Associated production p-+pL 0+K0 with 4 GeV/c pions in a bubble chamber. • Strangeness is a quantum number that is conserved in strong interactions but not in weak interactions. What are the forces in play in the above pictures? ...
... • Associated production p-+pL 0+K0 with 4 GeV/c pions in a bubble chamber. • Strangeness is a quantum number that is conserved in strong interactions but not in weak interactions. What are the forces in play in the above pictures? ...
Standard Model
... the atom were the electrons. When an alpha particle came very close to a nucleus, the repulsion between the positively charged alpha particle and the positively charged nucleus caused the alpha particle to be deflected. The closer the alpha particle is to the nucleus, the bigger the deflection of th ...
... the atom were the electrons. When an alpha particle came very close to a nucleus, the repulsion between the positively charged alpha particle and the positively charged nucleus caused the alpha particle to be deflected. The closer the alpha particle is to the nucleus, the bigger the deflection of th ...
Standard Model
The Standard Model of particle physics is a theory concerning the electromagnetic, weak, and strong nuclear interactions, as well as classifying all the subatomic particles known. It was developed throughout the latter half of the 20th century, as a collaborative effort of scientists around the world. The current formulation was finalized in the mid-1970s upon experimental confirmation of the existence of quarks. Since then, discoveries of the top quark (1995), the tau neutrino (2000), and more recently the Higgs boson (2013), have given further credence to the Standard Model. Because of its success in explaining a wide variety of experimental results, the Standard Model is sometimes regarded as a ""theory of almost everything"".Although the Standard Model is believed to be theoretically self-consistent and has demonstrated huge and continued successes in providing experimental predictions, it does leave some phenomena unexplained and it falls short of being a complete theory of fundamental interactions. It does not incorporate the full theory of gravitation as described by general relativity, or account for the accelerating expansion of the universe (as possibly described by dark energy). The model does not contain any viable dark matter particle that possesses all of the required properties deduced from observational cosmology. It also does not incorporate neutrino oscillations (and their non-zero masses).The development of the Standard Model was driven by theoretical and experimental particle physicists alike. For theorists, the Standard Model is a paradigm of a quantum field theory, which exhibits a wide range of physics including spontaneous symmetry breaking, anomalies, non-perturbative behavior, etc. It is used as a basis for building more exotic models that incorporate hypothetical particles, extra dimensions, and elaborate symmetries (such as supersymmetry) in an attempt to explain experimental results at variance with the Standard Model, such as the existence of dark matter and neutrino oscillations.