Location...

• Office: M2040 Physics Research Building
• Office Phone: 614 292 3910
• Fax: 614 292 7557
• Department Address: 191 W. Woodruff Ave., Columbus, Ohio 43210
• E-Mail Address: raby.1@osu.edu

Activities...

• Group: High Energy Theory
• Research interests:
  • Physics Beyond the Standard Model of Particle Physics
  • Grand Unification of strong, weak and electromagnetic interactions
  • Supersymmetric Theories of Nature
  • Theories on the Origin of Mass
• Former Graduate Students:
  • Zijie Poh
  • B. Charles Bryant
  • Archana Anandakrishnan
  • Ben Dundee
  • Leslie Schradin
  • Radovan Dermisek
  • Arash Mafi
  • Thomas Blazek
  • Vincent Lucas
• Courses to be taught this year:
  • Physics
    • Physics 8820, Group Theory
    • Physics 5400, Electricity and Magnetism
• Departmental Committees:
  • Colloquium committee, chair
  • Budget committee

The Standard Model of elementary particle physics describes the interactions of quarks and leptons with so-called gauge bosons which mediate the strong, weak and electromagnetic interactions. The name, the Standard Model, is an enormous understatement, since this theory has been tested by thousands of experiments at all different energies and is tremendously successful. However, this theory contains twenty eight arbitrary parameters which are fit to data. The goal of any theory which goes Beyond the Standard Model is to understand the origin of these nineteen parameters. Thirteen of these parameters are connected with the nine quark and lepton masses and the four weak mixing angles, and three determine the strengths of the three forces of Nature this theory describes. Grand Unification and Supersymmetry are two ingredients in many theories which try to bring order to these 28 arbitrary parameters. In my research, I have constructed theories which successfully predict many of these observed parameters. In addition, these theories then make predictions for new and as yet unobserved phenomena. One of the most spectacular of these would be the decay of the most stable form of matter -- protons -- at the heart of all atoms. Experiments at SuperKamiokande in Japan are now searching for this rare decay of the proton. Equally spectacular would be the observation of supersymmetric partners to the Standard Model particles. The Large Hadron Collider [LHC] is taking data. It may take a few years before we see convincing evidence of new physics.

Publication List (INSPIRE-HEP)

Gauge Coupling Unification & SUSY GUTs (Phys Rev D24, 1681 (1981) in PDF format)

"Unification of Couplings" (Physics Today, Oct. (1991) in PDF format)

"Grand Unified Theories" (Particle Data Group review article in PDF format)

"Desperately Seeking Supersymmetry [SUSY]" (Reports on Prog. in Phys. in PDF format)

"Searching for the Standard Model in the String Landscape : SUSY GUTs" (Reports on Prog. in Phys. in PDF format)

Constructing Orbifold GUTs from the Heterotic String (talk given at Unification Day workshop, Keystone, CO in PDF format)

"Puzzle of Charge and Mass" (colloquium in ppsx format)

"Grand Unified Theories" (World Summit 2006 in PDF format)

"SUSY GUT Model Building" (Euro Phys Jour C in PDF format)

Check out my new book -- Springer : Lecture Notes in Physics - Now available directly from Springer or on Amazon.

"Supersymmetric Grand Unified Theories : From Quarks to Strings via SUSY GUTs"