Elementary Particles Presented

Click For Summary
The discussion focuses on the Standard Model of particle physics, detailing the classification of elementary particles into matter and force categories. Matter particles, including fermions like quarks and leptons, exhibit unique statistical properties and interactions, while force particles, or bosons, mediate fundamental forces through gauge symmetries. The Higgs mechanism is highlighted as crucial for providing mass to particles, with ongoing research into its implications at facilities like the LHC. Additionally, the conversation touches on grand unification theories that aim to reconcile the strong, weak, and electromagnetic forces, predicting phenomena such as proton decay and the existence of hypothetical particles like the X-boson. Overall, the thread emphasizes the complexity and ongoing exploration within particle physics.
  • #61
News from the particle physics world -

http://www.interactions.org/cms/
 
Last edited by a moderator:
Physics news on Phys.org
  • #62
Check http://nobelprize.org/physics/laureates/2004/index.html if you want to find out more on the concept of asymptotic freedom in QCD. You need to click on "Nobel Lectures" to read what the 2004 Nobel Laureates in Physics have to say on it.

PS : Did you guys know that the guy in the middle actually played in a movie with Paul Newman ?

regards
marlon
 
Last edited:
  • #63
If you want to have a very http://nobelprize.org/physics/laureates/1999/index.html in renormalization theory of the weak interaction, just read the Nobel Lecture of Gerardus 't Hooft, the 1999 Physics Nobel Prize Laureate.

Enjoy


regards
marlon
 
  • #66
GEANT4 User Document - Physics Reference Manual

This is really cool!

http://geant4.cern.ch/G4UsersDocuments/UsersGuides/PhysicsReferenceManual/html/PhysicsReferenceManual.html
 
  • #68
Hi everyone,

I was earlier today searching for online video material for students who asked me where to find it. I admit that such lectures are much more pleasant to follow than textbooks, although I myself never find the need for video material. The best would be to actually be able to attend the lecture interactively. In any case, it did not occur to me at first, but CERN as an amazing server full of countless presentations on all sorts of topics. Soome of them of incredible value.

You will find them by browsing their web server[/color]. Enjoy :smile:

Praising thanks to this wonderful initiative.
 
  • #69
Revealing the Hidden Nature of Space and Time:
Charting the Course for Elementary Particle Physics
http://www.nap.edu/catalog.php?record_id=11641

Principal Chapters:

1. The Scientific Excitement and Challenges 17-32
2. Key Questions in Particle Physics 33-55
3. The Experimental Opportunities 56-100
4. The Strategic Framework 101-117
5. Findings and Recommended Actions 118-135

As part of the Physics 2010 decadal survey project, the National Research Council was asked by the Department of Energy and the National Science Foundation to recommend priorities for the U.S. particle physics program for the next 15 years. The challenge faced in this study was to identify a compelling leadership role for the United States in elementary particle physics given the global nature of the field and the current lack of a long-term and distinguishing strategic focus. Revealing the Hidden Nature of Space and Time provides an assessment of the scientific challenges in particle physics, including the key questions and experimental opportunities, the current status of the U.S. program and the strategic framework in which it sits and a set of strategic principles and recommendations to sustain a competitive and globally relevant U.S. particle physics program.
 
Last edited:
  • #70
Course notes on particle physics and standard model.

http://physics.uoregon.edu/~jimbrau/physics.html

Three part program on Elementary Particle Phenomenology:

Physics 661, Fall 2003 -
  • Introduction to the particles, forces, and the observable universe
  • Cosmic Rays
  • Quarks and Leptons
  • Interactions and Fields
  • Invariance Principles and Conservation Laws
  • Quarks in Hadrons
  • Lepton and Quark Scattering
Physics 662, Winter 2004 -
  • Quark Interactions and QCD
  • Weak Interactons
  • Cosmic Neutrinos
  • Electroweak Interactions and the Standard Model
  • Physics Beyond the Standard Model
  • Relativity and Cosmological Models
Physics 663, Spring 2004 -
  • particle accelerator concepts
  • experimental particle physics detector techniques
  • search for gravitational radiation



From his course - Physics 610 - Collider Physics:

"The Standard Model in 2001,'' Jonathan Rosner
Lectures at the 55th Scottish Universities' Summer School in Physics, St. Andrews
http://arXiv.org/abs/hep-ph/0108195
particularly sections 1 through 2.2
.
"Introduction to Electroweak Symmetry Breaking,'' Sally Dawson
Lectures given at the 1998 Summer School in High Energy Physics and Cosmology, Trieste, Italy
http://xxx.lanl.gov/abs/hep-ph/9901280
.
"Beyond the Standard Model,'' Michael Peskin
Lectures presented at the 1996 European School of High-Energy Physics
http://xxx.lanl.gov/abs/hep-ph/9705479
 
  • #71
Some historical background on HEP.


The discovery of the tau lepton: Part 1, The early history through 1975; Part 2, Confirmation of the discovery and measurement of major properties, 1976--1982; Perl, M. L.; February 01, 2000; SLAC-PUB--6584; ACC0025
http://www.osti.gov/accomplishments/documents/fullText/ACC0025.pdf


Discovery of charm; Goldhaber, G.; November 29, 1999; LBL--18696; ACC0023
http://www.osti.gov/accomplishments/documents/fullText/ACC0023.pdf


The hydrogen bubble chamber and the strange resonances; Alvarez, L.W.; November 29, 1999; LBL--22392; ACC0021
http://www.osti.gov/accomplishments/documents/fullText/ACC0021.pdf


The discovery of the top quark; Sinervo, P.K.; November 19, 1999; FNAL/C--95/371-E; ACC0015
http://www.osti.gov/accomplishments/documents/fullText/ACC0015.pdf


The discovery of the b quark at Fermilab in 1977: The experiment coordinator's story; Yoh, J.; October 26, 1999; FNAL/C--97/432-E; ACC0013
http://www.osti.gov/accomplishments/documents/fullText/ACC0013.pdf


Delta: the first pion nucleon resonance - its discovery and applications; Nagle, D.; October 26, 1999; LALP--84-27; ACC0011
http://www.osti.gov/accomplishments/documents/fullText/ACC0011.pdf


The ultimate structure of matter: The high energy physics program from the 1950s through the 1980s; ; January 19, 1999; DOE/ER--0435; ACC0005
http://www.osti.gov/accomplishments/documents/fullText/ACC0005.pdf


More at - http://www.osti.gov/accomplishments/databasebrowse.html
 
  • #72


I stumbled across this huge resource while looking for information on CMB and CMB-frame. These are all in downloadable PDF format.

http://pdg.lbl.gov/2008/reviews/contents_sports.html

Categories:
  • Constants, Units, Atomic and Nuclear Properties
  • Physical constants (Rev.)
  • Astrophysical constants and parameters (Rev.)
  • International System of units (SI)
  • Periodic table of the elements (Rev.)
  • Electronic structure of the elements
  • Atomic and nuclear properties of materials (Rev.) PDF / Interactive
  • Electromagnetic relations
  • Naming scheme for hadrons


Standard Model and Related Topics
  • Quantum chromodynamics
  • Electroweak model and constraints on new physics (Rev.)
  • Cabibbo-Kobayashi-Maskawa quark-mixing matrix (Rev.)
  • CP violation (Rev.)
  • Neutrino mass, mixing, and flavor change (Rev.)
  • Quark model (Rev.)
  • Grand Unified Theories
  • Structure Functions (Rev.; see below for more figures)
  • Structure Functions--additional figures (Rev.; see above)
  • Fragmentation functions in e+e- annihilation and lepton-nucleon DIS (Rev.)
  • Tests of Conservation Laws
  • CPT Invariance Tests in Neutral Kaon Decay (New)
  • CP Violation in KS -> 3pi
  • CP Violation in KL Decays (Rev.)
  • V(ud), V(us), Cabibbo Angle, and CKM Unitarity (Rev.)
  • Determination of V(cb) and V(ub) (Rev.)


Particle Properties (Hypothetical particles are listed below.)
  • Gauge Bosons
  • The Mass of the W Boson (Rev.)
  • Triple Gauge Couplings
  • Anomalous W/Z Quartic Couplings
  • The Z Boson (Rev.)
  • Anomalous Z Z gamma,
  • Z gamma gamma, and Z Z V Neutral Couplings

- Charged Leptons
Muon Anomalous Magnetic Moment (Rev.)
Muon Decay Parameters (Rev.)
tau Branching Fractions (Rev.)
tau-Lepton Decay Parameters (Rev.)

- Neutrinos
Number of Light Neutrino Types (Rev.)
Neutrinoless Double-beta Decay (Rev.)
Solar Neutrinos Review (Rev.)

- Quarks
Quark Masses (Rev.)
The Top Quark (Rev.)

- Mesons
Note on Scalar mesons (Rev.)
The eta(1405), eta(1475), f_1(1420), and f_1(1510) (Rev.)
Rare Kaon Decays (Rev.)
K(l3)+- and K(l3)0 Form Factors (Rev.)
CPT Invariance Tests in Neutral Kaon Decay (New)
CP-Violation in KS -> 3pi
V(ud), V(us), Cabibbo Angle, and CKM Unitarity (New)
CP-Violation in KL Decays (Rev.)
Dalitz-Plot Analysis Formalism
Review of Charm Dalitz-Plot Analyses (Rev.)
D0-- Dbar0 Mixing (Rev.)
Decay Constant of Charged Pseudoscalar Mesons (new)
Production and Decay of b-flavored Hadrons (Rev.)
Polarization in B Decays (Rev.)
B0-- Bbar0 Mixing (Rev.)
Determination of V(cb) and V(ub) (Rev.)
Branching Ratios of psi(2S) and chi_c(0,1,2) (Rev.)

- Baryons
Baryon Decay Parameters
N and Delta Resonances
Pentaquarks (New)
Radiative Hyperon Decays
Charmed Baryons (Rev.)
Lambda(c)+ Branching Fractions

- Hypothetical Particles and Concepts
Searches for Higgs Bosons (Rev.)
Free Quark Searches
Magnetic Monopole Searches
Supersymmmetry: Theory (Rev.)
Supersymmmetry: Experiment (Rev.)
Dynamical Electroweak Symmetry Breaking (Rev.)
Searches for Quark and Lepton Compositeness
Extra Dimensions (Rev.)
Axions and Other Very Light Bosons (New)
The W' Searches (Rev.)
The Z' Searches (Rev.)
The Leptoquark Quantum Numbers (New)


Astrophysics and Cosmology
  • Experimental tests of gravitational theory (Rev.)
  • Big-Bang cosmology (Rev.)
  • Big-Bang nucleosynthesis (Rev.)
  • Cosmological parameters (Rev.)
  • Dark matter (Rev.)
  • Cosmic microwave background (Rev.)
  • Cosmic rays (Rev.)


Experimental Methods and Colliders
  • Accelerator physics of colliders
  • High-energy collider parameters (Rev.)
  • Passage of particles through matter (Rev.)

Particle detectors (Rev.)
  • Radioactivity and radiation protection (Rev.)
  • Commonly used radioactive sources

and related - http://pdg.lbl.gov/2008/AtomicNuclearProperties/index.html - but I don't know where to put it at the moment.


Mathematical Tools
  • Probability (Rev.)
  • Statistics (Rev.)
  • Monte Carlo techniques (Rev.)
  • Monte Carlo particle numbering scheme (Rev.)
  • Clebsch-Gordan coeff., sph. harmonics, and d functions
  • SU(3) isoscalar factors and representation matrices
  • SU(n) multiplets and Young diagrams


Kinematics, Cross-Section Formulae, and Plots
  • Kinematics (Rev.)
  • Cross-section formulae for specific processes (Rev.)
  • Plots of cross sections and related quantities (Rev.) PDF / Interactive


Authors, Introductory Text, History plots
 
Last edited:
  • #73
marlon said:
Hi everyone...

I have answered already a lot of questions here on the topic of the different elementary particles in the Standard Model. For this reason I will give the interested reader this site that describes this subject very clearly...

http://pdg.web.cern.ch/pdg/particleadventure/frameless/startstandard.html

If you have more questions, please don't hesitate to post them here...

regards
marlon :biggrin: :cool:

Hi
marlon
I have a very fundamental question please help me
Are electrons really close to structure less point charged particles?
Since I am not getting convinced from theory, is it the experiments that makes us believe so,then why is its size being revised year after year.
Are we missing something very fundamental?
Regards
Shankar
 
Last edited by a moderator:
  • #74
Narayanan.S said:
Hi
marlon
I have a very fundamental question please help me
Are electrons really close to structure less point charged particles?
Since I am not getting convinced from theory, is it the experiments that makes us believe so,then why is its size being revised year after year.
Are we missing something very fundamental?
Regards
Shankar

We have so far no experimental signs of size or structure of the electron; experimentally we can only deduce the UPPER LIMIT - and that limit changes as we reach higher and higher energies in our laboratories.

The upper limit of the electron radius is 10^-21 meters I think, thus we have not said that "the size of the electron IS 10^-21 meters", we have only said "IF the electron has size, then it is smaller than 10^-21meters".
 

Similar threads

  • · Replies 13 ·
Replies
13
Views
3K
  • · Replies 36 ·
2
Replies
36
Views
4K
  • · Replies 11 ·
Replies
11
Views
4K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 5 ·
Replies
5
Views
2K
  • · Replies 3 ·
Replies
3
Views
1K
  • · Replies 6 ·
Replies
6
Views
725
  • · Replies 2 ·
Replies
2
Views
3K
  • · Replies 8 ·
Replies
8
Views
3K
  • · Replies 20 ·
Replies
20
Views
3K