Jogesh C. Pati (born 1937) is an Indian-American theoretical physicist at the SLAC National Accelerator Laboratory.
His formulation, carried out in collaboration with Nobel Laureate Abdus Salam, of the original gauge theory of quark–lepton unification, and their resulting insight that violations of baryon and lepton numbers, especially those that would manifest in proton decay, are likely consequences of such a unification, provide cornerstones of modern particle physics today.
The suggestions of Pati and Salam (the Pati–Salam model) of the symmetry of SU(4)–color, left–right symmetry, and of the associated existence of right-handed neutrinos, now provide some of the crucial ingredients for understanding the observed masses of the neutrinos and their oscillations.
Pati was awarded the Dirac Medal for his seminal contributions to a "Quest for Unification" in the year 2000 along with Howard Georgi and Helen Quinn.
[3][4][5] In 2013, Pati was conferred the honor of Padma Bhushan, the 3rd highest civilian award from the Govt.