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Hadrons and Nuclei : Introductory Remarks

Delve into the world of hadrons and nuclei through introductory lectures on topics like single hadron physics, Heavy Baryon Chiral Perturbation Theory, scattering from lattice calculations, and relevant aspects of nuclear physics.

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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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