Nuclear Particle, Astrophysics, and Cosmology (NUPAC) Seminars: Correlations in Supersymmetric Cascade Decays
Tuesday, March 25, 2-3:30pm; Presenter: Terry Goldman (LANL); Room 190, Physics & Astronomy. Nuclear physics has been built on the fact that nuclei are well described as bound states of nucleons that are almost identical to the free proton and neutron. However, these baryons are known to be composites of quarks with extremely strong Quantum ChromoDynamic (QCD) interactions. Why are the nucleons in nuclei not significantly distorted from their free space structure? We show that the two principle features of QCD phenomenology account for this qualitatively and demonstrate it quantitatively by constructing two small nuclei directly in terms of quarks. Predictions from this model for the "EMC effect" in deep inelastic scattering of leptons on nuclei appear to be accurate. A dibaryon that does not have nuclear characteristics is also predicted, for which there is "almost" evidence. We conclude that the nucleon-nucleon potential and meson-exchange approaches to nuclear physics bear similarities to chemistry before the appreciation of the electronic structure of atoms, and that body-fixed models of nuclear structure in terms of quark exchanges may lead to deeper understanding in a fashion parallel to that whereby chemistry advanced beyond such concepts as electron affinity, electronegativity, etc.
| What |
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|---|---|
| When |
Jan 29, 2008 07:00 AM
to Apr 25, 2008 11:30 AM |
| Where | Room 190, Physics & Astronomy |
| Contact Name | Rouzbeh Allahverdi |
| Contact Email | rouzbeh@unm.edu |
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The NUPAC seminars will occur every Tuesday, from 2pm to 3:30pm, starting first on Jan. 29 and transmitted via teleconferencing to all partner institutions. The LANL site will be the Oppenheimer Study Center (main floor VTC room). The UNM site will be Room 190, Physics & Astronomy. A preliminary schedule of speakers has been arranged by Prof. Rouzbeh Allahverdi at UNM.
Janauary 29: Gian Franco Gentile (UNM)-confirmed
February 5: James White (Texas A&M)-confirmed
February 12: Daniel Eisenstein (Arizona)-confirmed
February 19: Michael Graesser (LANL)-tentative
February 26: Seth Digel (Stanford)-confirmed
March 4: Teruki Kamon (Texas A&M)-confirmed
March 11: Terry Goldman (LANL)-confirmed
March 25: Bhaskar Dutta (Texas A&M)-tentative
April 1: Chris Churchill (NMSU)-confirmed
May 7: Eiichiro Komatsu (Texas Austin)-confirmed
These first set of seminars will originate from the UNM campus in Albuquerque, but we have invited participation from the other NMC institutions (NMT and NMSU), and we anticipate some of the seminars in the future originating from Socorro, Las Cruces, or here at Los Alamos.
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