3. Neutron numbers Proton numbers

4. Nuclear Binding Energy

5. Nuclear Fusion

6. Solar Model

7. Nuclear Fission and Chain Reaction

8. Standard Model 8 Have we discovered Higgs? Breaking News from CERN

9. 9

10. Challenges in Physics  Confinement QCD  Lattice QCD  Chiral perturbation theory  New physics beyond the Standard Model (SM)  New sources of symmetry violation  Dark matter  Dark energy 10 QCD at different energies

11. 11

12. 12

13. 13

14. 14

15. 15

16. 16

17. “Vector Portal” to Dark Sector 17 1.Dark photon A’ Kinetic mixing and U(1)’ 2.Dark leptophobic B-boson (dark ω, γ B, or Z’) : Gauged baryon symmetry U(1) B  the stability of baryonic and dark matter  a unified genesis of baryonic and dark matter  a natural framework for “Strong CP problem” in QCD  the region is strongly constrained by long-range forces search exp. ; the has been investigated by the collider exp.  GeV-scale domain is nearly untouched, a discovery opportunity! Most A’ searches are through its decay to relying on the leptonic coupling of new force Early studies by Lee and Yang, Phys.Rev.,98 (1955) 1501; Okun, Yad.Fiz., 10 (1969) 358,

18. 18

19. 19

20. Striking signature for B-boson in η decay  B production: A.E. Nelson, N. Tetradis, Phys. Lett., B221, 80 (1989)  B decays:  highly suppressed SM background 20 B  0  in 140-600 MeV mass range S. Tulin, Phys.Rev., D89, 14008 (2014)  B  +  0  Search for a resonance peak of  0  for m B ~140-550 MeV

21. Jlab Eta Factory (JEF) Experiment ( Jlab Eta Factory (JEF) Experiment (  B  0  ) 21  A stringent constraint on the leptophobic B-boson in 140-550 MeV range.  A positive signal of B in JEF will imply a new fermion with a mass up to a few TeV due to electro-weak anomaly cancellation.  Future  Future  ’ experiment will extend the experimental reach up to 1 GeV

22. C Invariance  Maximally violated in the weak force and is well tested.  Assumed in SM for electromagnetic and strong forces, but it is not experimentally well tested (The current constraint:  1 GeV)  EDMs place no constraint on CVPC in the presence of a conspiracy or new symmetry; only the direct searches are unambiguous. ( M. Ramsey-Musolf, phys. Rev., D63, 076007 (2001); talk at the AFCI workshop ) ( M. Ramsey-Musolf, phys. Rev., D63, 076007 (2001); talk at the AFCI workshop )talk at the AFCI workshoptalk at the AFCI workshop 22 Final State Branching Ratio (upper limit) Gammas in Final State 3γ3γ< 1.610 -5 3 π0γπ0γ< 910 -5 2π0γ2π0γ< 510 -4 5 3γπ 0 Nothing published 3π0γ3π0γ< 610 -5 7 3γ2π03γ2π0 Nothing published C Violating η neutral decays

23. 23 Experimental Improvement on η →3 γ  SM contribution: BR(η → 3γ) <10 -19 via P-violating weak interaction.  A new C- and T-violating, and P-conserving interaction was proposed by Bernstein, Feinberg and Lee Phys. Rev.,139, B1965 (1965)  A calculation due to such new physics by Tarasov suggests: BR(  3  )< 10 -2 Sov.J.Nucl.Phys.,5,445 (1967)  A new investigation by M. R-M and two Ph.D. students is in progress Proj. JEF Improve BR upper limit by one order of magnitude to directly tighten the constraint on CVPC new physics