Broadcast

The Broadcast side of the Physics Colloquium.

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The Colloquiums that were recorded in 1999:

Feb. 5.
Speaker:
Amy Barger, University of Hawaii

Title:
"An Unobscured View of the High Redshift Universe"

Abstract:
Star formation in dust-enshrouded distant galaxies is largely hidden from optical observations. A first view of the optically dark side of the Universe has recently been obtained with the James Clerk Maxwell Telescope on Mauna Kea using the revolutionary SCUBA camera that detects starlight reradiated by dust at submillimeter wavelengths. A new population of extremely luminous dusty galaxies is revealed whose nature, redshift distribution, and significance will be discussed.

Feb. 19.
Speaker:
Tamas Gombosi, The Univerisity of Michigan

Title:
"High Performance Three-Dimensional MHD Simulations of Space Plasmas with Adaptive Mesh Refinement"

Abstract:

Feb. 26.
Speaker:
Gail Hanson, Indiana University

Title:
"Twenty-six Years of e+ e- Physics"

Abstract:
Twenty-six years ago e+ e- physics was a relatively minor subfield of particle physics, specialized in the study of electromagnetic interactions. Then came the discoveries of the unexpectedly large cross section for production of multihadron states, the bound charm-anticharm resonances and , the lepton, quark jets, charm mesons, and gluon jets. It became accepted that the e+ and e- annihilate into quark-antiquark pairs, with a cross section that could be explained by the electromagnetic coupling of the virtual photon to the various quarks according to their fractional charges, with a threefold increase due to the three possible colors. Charm and bottom hadrons are produced by e+ e- annihilation, and their weak decays are probed in a clean environment. The quarks radiate gluons, allowing studies of Quantum Chromodynamics, the theory of strong interactions. Today e+ e- physics provides precise tests of what has become the Standard Model of particle physics. At the highest energy e+ e- accelerator at CERN, searches are now under way for the Higgs boson of electroweak symmetry breaking and for the supersymmetric partners of the ordinary particles.

March 5.
Speaker:
Peter Lapage

Title:
"What is Renormalization?"

Abstract:

Oct. 15th
Speaker:
Jon Rosner, University of Chicago

Title:
"Particals With Beauty - Windows on New Physics"

Abstract:
Particles with beauty those containing the "b," or "beauty" quark can shed light on new physics. By comparing decays of these particles with those of the corresponding antiparticles, a wealth of information becomes available on the fundamental mechanism for the violation of CP symmetry the product of charge reflection (C) and space inversion, or parity (P). The theoretical background will be reviewed, and the rich experimental opportunities described.

Nov. 5th
Speaker:
Joe Lykken, Fermilab

Title:
"The Search for Extra Dimensions"

Abstract:

Nov. 19th
Speaker:
Micheal Riordan, Stanford University

Title:
"The Invention of the Transistor"

Abstract:

Dec. 10th
Speaker:
Chris Sneden, University of Texas, Austin

Title:
"Early Galactic Nucleosythesis of Neutron-Capture Elements"

Abstract:

Dec. 15th
Speaker:
Jon Rosner, From the Univerity of Chicago

Title:
"Particles with Beauty -- Windows on New Physics"

Abstract:
Particles with Beauty -- those containing the "b," or "beauty" -- can shed light on new physics. By comparing decays of these particals with those of the corresponding antipaticales, a wealth of information becomes available on the fundamental mechanism for the violation of CP symmetry -- the product of charge reflection (C) and space inversion, or parity (P). The theoretical background will be reviewed, and the rich experimental opportunities described.

Feb. 5.	Speaker:	Amy Barger, University of Hawaii
	Title:	"An Unobscured View of the High Redshift Universe"
	Abstract:	Star formation in dust-enshrouded distant galaxies is largely hidden from optical observations. A first view of the optically dark side of the Universe has recently been obtained with the James Clerk Maxwell Telescope on Mauna Kea using the revolutionary SCUBA camera that detects starlight reradiated by dust at submillimeter wavelengths. A new population of extremely luminous dusty galaxies is revealed whose nature, redshift distribution, and significance will be discussed.

Feb. 19.	Speaker:	Tamas Gombosi, The Univerisity of Michigan
	Title:	"High Performance Three-Dimensional MHD Simulations of Space Plasmas with Adaptive Mesh Refinement"
	Abstract:

Feb. 26.	Speaker:	Gail Hanson, Indiana University
	Title:	"Twenty-six Years of e+ e- Physics"
	Abstract:	Twenty-six years ago e+ e- physics was a relatively minor subfield of particle physics, specialized in the study of electromagnetic interactions. Then came the discoveries of the unexpectedly large cross section for production of multihadron states, the bound charm-anticharm resonances and , the lepton, quark jets, charm mesons, and gluon jets. It became accepted that the e+ and e- annihilate into quark-antiquark pairs, with a cross section that could be explained by the electromagnetic coupling of the virtual photon to the various quarks according to their fractional charges, with a threefold increase due to the three possible colors. Charm and bottom hadrons are produced by e+ e- annihilation, and their weak decays are probed in a clean environment. The quarks radiate gluons, allowing studies of Quantum Chromodynamics, the theory of strong interactions. Today e+ e- physics provides precise tests of what has become the Standard Model of particle physics. At the highest energy e+ e- accelerator at CERN, searches are now under way for the Higgs boson of electroweak symmetry breaking and for the supersymmetric partners of the ordinary particles.

March 5.	Speaker:	Peter Lapage
	Title:	"What is Renormalization?"
	Abstract:

Oct. 15th	Speaker:	Jon Rosner, University of Chicago
	Title:	"Particals With Beauty - Windows on New Physics"
	Abstract:	Particles with beauty those containing the "b," or "beauty" quark can shed light on new physics. By comparing decays of these particles with those of the corresponding antiparticles, a wealth of information becomes available on the fundamental mechanism for the violation of CP symmetry the product of charge reflection (C) and space inversion, or parity (P). The theoretical background will be reviewed, and the rich experimental opportunities described.

Nov. 5th	Speaker:	Joe Lykken, Fermilab
	Title:	"The Search for Extra Dimensions"
	Abstract:

Nov. 19th	Speaker:	Micheal Riordan, Stanford University
	Title:	"The Invention of the Transistor"
	Abstract:

Dec. 10th	Speaker:	Chris Sneden, University of Texas, Austin
	Title:	"Early Galactic Nucleosythesis of Neutron-Capture Elements"
	Abstract:

Dec. 15th	Speaker:	Jon Rosner, From the Univerity of Chicago
	Title:	"Particles with Beauty -- Windows on New Physics"
	Abstract:	Particles with Beauty -- those containing the "b," or "beauty" -- can shed light on new physics. By comparing decays of these particals with those of the corresponding antipaticales, a wealth of information becomes available on the fundamental mechanism for the violation of CP symmetry -- the product of charge reflection (C) and space inversion, or parity (P). The theoretical background will be reviewed, and the rich experimental opportunities described.