14 citations · 17 across the 2 of their papers we have counts for
12 papers · 1 filter
Gauge federation as an alternative to unification
John F. Donoghue, Preema Pais
We motivate and explore the possibility that extra SU(N) gauge groups may exist independently of the Standard Model groups, yet not be subgroups of some grand unified group. We stu…
Constraints on the variability of quark masses from nuclear binding
Thibault Damour, John F. Donoghue
Based on recent work on nuclear binding, we update and extend the anthropic constraints on the light quark masses, with results that are more tightly constrained than previously ob…
The fine-tuning problems of particle physics and anthropic mechanisms
John F. Donoghue
Many of the classic problems of particle physics appear in a very different light when viewed from the perspective of the multiverse. Most importantly the two great ``fine tuning''…
Long distance effects and strangeness in the nucleon
John F. Donoghue, Barry R. Holstein, Tobias Huber +1
We discuss the calculation of the strange magnetic radius of the proton in chiral perturbation theory. In particular we investigate the low energy component of the loop integrals i…
Fine tunings and quark masses: Phenomenology of multiple domain theories
John F. Donoghue
This talk describes some of the consequences for particle phenomenology of the hypothesis that the physical parameters may vary in different domains of the universe.
Improving the convergence of SU(3) baryon chiral perturbation theory
John F. Donoghue, Barry R. Holstein
Baryon chiral perturbation theory as conventionally applied using dimensional regularization has a well-known problem with the convergence of the SU(3) chiral expansion. One can re…