P461 - particles VII1 Glashow-Weinberg-Salam Model EM and weak forces mix…or just EW force. Before mixing Bosons are massless: Group Boson Coupling Quantum.

Slides:

Advertisements

Similar presentations

5th May 2010Fergus Wilson, RAL1 Experimental Particle Physics PHYS6011 Looking for Higgs and SUSY at the LHC or...what can you get for $10,000,000,000.

Advertisements

Higgs physics theory aspects experimental approaches Monika Jurcovicova Department of Nuclear Physics, Comenius University Bratislava H f ~ m f.

The Weak Force EM STRONG WEAK ?. The Force Carriers  Like the Electromagnetic & Strong forces, the Weak force is also mediated by “force carriers”. 

The search for the God Particle

Announcements 11/14 Today: 9.6, 9.8 Friday: 10A – 10E Monday: 10F – 10H 9.6 Only do differential cross-section See problem 7.7 to do most of the work for.

The Standard Model and Beyond [Secs 17.1 Dunlap].

£ With  real, the field  vanishes and our Lagrangian reduces to introducing a MASSIVE Higgs scalar field, , and “getting” a massive vector gauge field.

Lecture 10: Standard Model Lagrangian The Standard Model Lagrangian is obtained by imposing three local gauge invariances on the quark and lepton field.

FLAVOURS 50 Years After SU(3) Discovery Djordje Šijački.

I. Brief History of Higgs Mechanism & Standard Model.

Weak Interactions Chapter 8 M&S Some Weak Interaction basics

Introduction to the Standard Model

P461 - particles VII1 Glashow-Weinberg-Salam Model EM and weak forces mix…or just EW force. Before mixing Bosons are massless: Group Boson Coupling Quantum.

Fermion Masses and Unification Steve King University of Southampton.

4 th Generation Leptons in Minimal Walking Technicolor Theory Matti Heikinheimo University of Jyväskylä.

Smashing the Standard Model: Physics at the CERN LHC

Chiral freedom and the scale of weak interactions.

30 August 04Lorenzo Feligioni1 Searches for Techniparticles at DØ Lorenzo Feligioni Boston University for the DØ collaboration.

8:00am 9:00 10:00 11:00 12:00pm 1:00 2:00 3:00 4:00 5:00 6:00 7:00 Monday Tuesday Wednesday Thursday Friday Apr 25??? Make up schedule April 11 catch a.

P461 - particles III1 Mixing in Weak Decays Charged Weak Current (exchange of Ws) causes one member of a weak doublet to change into the other Taus and.

Chiral freedom and the scale of weak interactions.

Aug 29-31, 2005M. Jezabek1 Generation of Quark and Lepton Masses in the Standard Model International WE Heraeus Summer School on Flavour Physics and CP.

Quantum Electrodynamics Dirac Equation : spin 1/2.

2-nd Vienna Central European Seminar, Nov 25-27, Rare Meson Decays in Theories Beyond the Standard Model A. Ali (DESY), A. V. Borisov, M. V. Sidorova.

Masses For Gauge Bosons. A few basics on Lagrangians Euler-Lagrange equation then give you the equations of motion:

A.Ereditato SS Elementarteilchenphysik Antonio Ereditato LHEP University of Bern Lesson on:Electroweak interaction and SM (8)

Monday, Apr. 2, 2007PHYS 5326, Spring 2007 Jae Yu 1 PHYS 5326 – Lecture #12, 13, 14 Monday, Apr. 2, 2007 Dr. Jae Yu 1.Local Gauge Invariance 2.U(1) Gauge.

Particle Physics Chris Parkes 5 th Handout Electroweak Theory 1.Divergences: cancellation requires.

Electroweak interaction

Particle Physics J4 Leptons and the standard model.

The Standard Model of Electroweak Physics Christopher T. Hill Head of Theoretical Physics Fermilab.

P Spring 2003 L12Richard Kass The properties of the Z 0 For about ten years the Z 0 was studied in great detail at two accelerator complexes: LEP.

Electroweak Theory Mr. Gabriel Pendas Dr. Susan Blessing.

Wednesday, Apr. 23, 2003PHYS 5326, Spring 2003 Jae Yu 1 PHYS 5326 – Lecture #24 Wednesday, Apr. 23, 2003 Dr. Jae Yu Issues with SM picture Introduction.

INVASIONS IN PARTICLE PHYSICS Compton Lectures Autumn 2001 Lecture 8 Dec

Sally Dawson, BNL Introduction to the Standard Model TASI, 2006 Introduction to the Standard Model –Review of the SU(2) x U(1) Electroweak theory –Experimental.

A Modified Rishon Model Patrick S. Walters AAPT-CPS Spring Meeting 2009 Penn State – Mont Alto March 27 th – 28 th 2009.

Composite H. Fritzsch LMU Munich. LHC p 4 TeV 126 GeV.

QFD, Weak Interactions Some Weak Interaction basics

weak decays beta decay ofneutron problem energy and momentum not conserved e n p.

H. Quarks – “the building blocks of the Universe” The number of quarks increased with discoveries of new particles and have reached 6 For unknown reasons.

Sally Dawson, BNL Standard Model and Higgs Physics FNAL LHC School, 2006 Introduction to the Standard Model  Review of the SU(2) x U(1) Electroweak theory.

The inclusion of fermions – J=1/2 particles

1 The 3D structure of QCD the roots of the standard model Piet Mulders POETIC (Paris)

Monday, Mar. 10, 2003PHYS 5326, Spring 2003 Jae Yu 1 PHYS 5326 – Lecture #14 Monday, Mar. 10, 2003 Dr. Jae Yu Completion of U(1) Gauge Invariance SU(2)

？ composite ？ H. Fritzsch LMU Munich.

Monday, Apr. 7, 2003PHYS 5326, Spring 2003 Jae Yu 1 PHYS 5326 – Lecture #20 Monday, Apr. 7, 2003 Dr. Jae Yu Super Symmetry Breaking MSSM Higgs and Their.

What about the Higgs Boson? What precisely is the Higgs? We describe dynamics of a system via a Lagrangian – One can completely replicate all of Newtonian.

2 nd International Conference on Particle Physics in Memoriam Engin Arık and Her Colleagues Doğuş University, Istanbul, Turkey June nd International.

Water （ H 2 O ） oxygen atom （ O ） proton （ p ） electrons （ e ） neutron （ n ） 3 quarks What the matters are made out of ? 3 quarks

Lecture 7. Tuesday… Superfield content of the MSSM Gauge group is that of SM: StrongWeakhypercharge Vector superfields of the MSSM.

Physics 222 UCSD/225b UCSB Lecture 12 Chapter 15: The Standard Model of EWK Interactions A large part of today’s lecture is review of what we have already.

Monday, Apr. 11, 2005PHYS 3446, Spring 2005 Jae Yu 1 PHYS 3446 – Lecture #18 Monday, Apr. 11, 2005 Dr. Jae Yu Symmetries Local gauge symmetry Gauge fields.

10/29/2007Julia VelkovskaPHY 340a Lecture 4: Last time we talked about deep- inelastic scattering and the evidence of quarks Next time we will talk about.

Some remarks on Higgs physics The Higgs mechanism Triviality and vacuum stability: Higgs bounds The no-Higgs option: strong WW scattering These are just.

Nuclear Physics: Mossbauer Effect

Reference: “The Standard Model Higgs Boson” by Ivo van Vulpen,

Colour Breaking Baryogenesis

Lecture 10: Standard Model Lagrangian

Mixing in Weak Decays Charged Weak Current (exchange of Ws) causes one member of a weak doublet to change into the other Taus and muons therefore decay.

Lecture 9 Weak Neutral Currents Chapter 13 in H&M.

Higgs boson(s) Why do we need them? What do they look like?

The Standard Model By: Dorca Lee.

Handout 13 : Electroweak Unification and the W and Z Bosons

Introduction to Particle Physics

Lecture 12 Chapter 15: The Standard Model of EWK Interactions

Weak interactions.

Can new Higgs boson be Dark Matter Candidate in the Economical Model

Standard model of particle physics

Presentation transcript:

P461 - particles VII1 Glashow-Weinberg-Salam Model EM and weak forces mix…or just EW force. Before mixing Bosons are massless: Group Boson Coupling Quantum No. SU(2) L W 1,2,3 g T weak isospin U(1) B g’ Y leptonic hypercharge Interaction Lagrangian is convert to physical fields. Neutrals mix (B,W3->Z, photon). W,Z acquire mass. Force photon mass=0. Higgs Boson introduced to break mass symmetry (A same field as in EM….4 vector)

P461 - particles VII2 Look at EM and 2 weak “current” charged current. Compare to mu/beta decay (have measured weak force, eg. weak mixing only “new” free parameter) weak neutral current

P461 - particles VII3 W and Z couplings EW model has left-handed doublets right handed singlets W couplings to left-handed component and ~always the same Z to left-handed doublet Z to right-handed singlet redefine as Vector and Axial parts of V-A Z

P461 - particles VII4 Z decays/vertices Color factor of 3 for quarks

P461 - particles VII5 Z Branching Fraction Can use couplings to get branching modes PDG measured values in ()