386 citations · 1.9k across the 28 of their papers we have counts for
5 papers · 1 filter
A Very Light Dilaton
Benjamín Grinstein, Patipan Uttayarat
We present a completely perturbative model that displays behavior similar to that of walking technicolor. In one phase of the model RG-trajectories run towards an IR-fixed point bu…
Strong Couplings of X(3872)_{J=1,2} and a New Look at J/psi Suppression in Heavy Ion Collisions
Federico Brazzi, Benjamin Grinstein, Fulvio Piccinini +2
We define and compute from data the strong couplings of the X(3872) with both of the possible quantum numbers assignments J^{PC}=1^{++},2^{-+}. We use these to compute cross sectio…
Hidden Fine Tuning In The Quark Sector Of Little Higgs Models
Benjamin Grinstein, Randall Kelley, Patipan Uttayarat
In Little Higgs models a collective symmetry prevents the higgs from acquiring a quadratically divergent mass at one loop. We have previously shown that the couplings in the Little…
Strong Electroweak Symmetry Breaking
Benjamin Grinstein
Models of spontaneous breaking of electroweak symmetry by a strong interaction do not have fine tuning/hierarchy problem. They are conceptually elegant and use the only mechanism o…
Ultraviolet Properties of the Higgs Sector in the Lee-Wick Standard Model
J. R. Espinosa, B. Grinstein
The Lee-Wick (LW) Standard Model (SM) offers a new solution to the hierarchy problem. We discuss, using effective potential techniques, its peculiar ultraviolet (UV) behaviour. We…