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Hadrons and Nuclei : Introductory Remarks

Hadrons and Nuclei : Introductory Remarks. Lattice Summer School. Martin Savage Summer 2007 University of Washington. The Lectures. Topic 1 : Introduction, and the physics of single hadrons (Lecture 1)

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Hadrons and Nuclei : Introductory Remarks

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  1. Hadrons and Nuclei : Introductory Remarks Lattice Summer School Martin Savage Summer 2007 University of Washington

  2. The Lectures • Topic 1 : Introduction, and the physics of single hadrons (Lecture 1) • Topic 2 : Introduction to Heavy Baryon Chiral Perturbation Theory (HBcPT) (Lecture 4) • Topic 3 : Scattering From Lattice Calculations (Lecture 2) • Topic 4 : Relevant Aspects Nuclear Physics (Lecture 3)

  3. Nature

  4. Quantum Chromodynamics • Developed during 1970’s • Local Gauge Theory : SU(3)c • Building blocks arequarks (q) and gluons (g)

  5. Quark Masses } • U : ~ 5 MeV • D : ~ 10 MeV • S : ~ 125 MeV • C : ~ 1.5 GeV • B : ~ 4.5 GeV • T : ~ 176 GeV Light Quarks } Heavy Quarks

  6. Interactions q q g g g g g g g g

  7. QCD Coupling pdg

  8. Symmetry Breaking • Dynamics have a Symmetry • Ground State does NOT GroundState Spontaneous Symmetry Breaking Massless Excitations

  9. QCD and Symmetry Breaking Hadronic Spectrum … U D U D ~ 1232 MeV L R D ~ 940 MeV N r SU(2) SU(2) ~ 770 MeV L R < q q > SU(2) p p ~ 140 MeV and 0 Mq = 0

  10. Baryon Resonance Spectrum Capstick and Roberts, PRD58 (1998) 074011

  11. e ( MZ ) g ( MZ ) Mu Md Ms LQCD LQCD LQCD LQCD , , , , A Grand Challenge for QCD and Nuclear Physics How do the properties and interactions of hadrons and nuclei depend upon the fundamental parameters of nature ?

  12. Fine -Tunings in Nuclear Physics are Fine-Tunings of QCD

  13. What to keep in the back of your mind • When listening and thinking about these lectures, try to put everything in the context of QCD and the fundamental parameters of nature. • All of hadronic and nuclear physics must emerge from QCD • How ?? … fine-tunings • How to get quantitative results from lattice QCD

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