Professor Nath is a theoretical physicist who has made contributions to the fields
of high energy theory, and to theories of particle physics and gravity. He is co-author
of the "first" supergravity theories and a co-author of the well known mSUGRA
model which is under experimental tests at the Fermilab Tevatron and will be subject to
test at the CERN Large Hadron Collider (LHC). The mSUGRA model and its extensions are
currently the leading contenders for new physics beyond the Standard Model of Glashow,
Weinberg and Salam, and of Gross, Politzer and Wilczek. While the Standard Model of the
electro-weak and strong interactions is very successful, and consistent with existing
experimental data, it has many intrinsic drawbacks. It contains a large number of
arbitrary parameters, suffers from the so called hierarchy problem, i.e., that it is
difficult to keep the various mass scales apart in the theory, and it has no unification
with gravity. Super theories (i.e., theories using supersymmetry, such as supergravity
and superstrings) have the potential of rectifying many of the shortcomings of the
Standard Model. 

Articles

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Excess observed in CDF Bs⁰→μ⁺μ⁻ and supersymmetry at the LHC (with Sujeet Akula, Daniel Feldman, and Gregory Peim), Physics Faculty Publications (2011)

The recent excess observed by CDF in Bs⁰→μ⁺μ⁻ is interpreted in terms of a possible...

 

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Predictive signatures of supersymmetry: Measuring the dark matter mass and gluino mass with early LHC data (with Daniel Feldman, Katherine Freese, Brent D. Nelson, and Gregory Peim), Physics Faculty Publications (2011)

We present a focused study of a predictive unified model whose measurable consequences are immediately...

 

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Chromoelectric dipole moment of the top quark in models with vectorlike multiplets (with Tarek Ibrahim), Physics Faculty Publications (2011)

The chromoelectric dipole moment of the top quark is calculated in a model with a...

 

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Low mass gluino within the sparticle landscape, implications for dark matter, and early discovery prospects at LHC-7 (with Ning Chen, Daniel Feldman, Zuowei Liu, and Gregory Peim), Physics Faculty Publications (2011)

We analyze supergravity models that predict a low mass gluino within the landscape of sparticle...

 

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Higgsino dark matter model consistent with galactic cosmic ray data and possibility of discovery at LHC-7 (with Ning Chen, Daniel Feldman, Zuowei Liu, and Gregory Peim), Physics Faculty Publications (2011)

A solution to the PAMELA positron excess with Higgsino dark matter within extended supergravity grand...

 

Unpublished Papers

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Developments in supergravity unified models (with Richard Arnowitt), Physics Faculty Publications (2009)

A review is given of developments in supergravity unifed models proposed in 1982 and their...

 

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Dark matter in SUGRA, strings and branes, Physics Faculty Publications (2006)

A brief review is given of dark matter in SUGRA, strings and branes. For SUGRA...

 

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Corrections to b, t quark masses and τ lepton mass in SUGRA including CP phases (with Tarek Ibrahim), Physics Faculty Publications (2003)

A brief review is given of recent analyses of the effects of CP phases on...

 

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CP violation in SUSY, strings and branes (with Tarek Ibrahim), Physics Faculty Publications (2002)

A review is given of CP violation in a broad class of models based on...

 

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Accurate cosmological parameters and supersymmetric particle properties (with R. Arnowitt), Physics Faculty Publications (1998)

Future satellite, balloon and ground based experiments will give precision determinations of the basic cosmological...

 

Preprints

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Connecting the direct detection of dark matter with observation of sparticles at the LHC (with Daniel Feldman and Zuowei Liu), Physics Faculty Publications (2009)

An analysis is given connecting event rates for the direct detection of neutralino dark matter...

 

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Decoding the mechanism for the origin of dark matter in the early universe using LHC data (with Daniel Feldman and Zuowei Liu), Physics Faculty Publications (2008)

It is shown that LHC data can allow one to decode the mechanism by which...

 

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CP violation from standard model to strings (with Tarek Ibrahim), Physics Faculty Publications (2007)

A review of CP violation from the Standard Model to strings is given which includes...

 

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An improved analysis of b→sγ in supersymmetry (with Mario E. Gómez, Tarek Ibrahim, and Solveig Skadhauge), Physics Faculty Publications (2006)

An improved analysis of the b → s + γ decay in the minimal flavor...

 

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Couplings of vector-spinor representation for SO(10) model building (with Raza M. Syed), Physics Faculty Publications (2006)

Higgs multiplet in the vector-spinor representations of SO(10), i.e., the 1̄4̄4̄ + 144 multiplet can...