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Symmetry realization via a dynamical inverse Higgs mechanism

AbstractThe Ward identities associated with spontaneously broken symmetries can be saturated by Goldstone bosons. However, when space-time symmetries are broken, the number of Goldstone bosons necessary to non-linearly realize the symmetry can be less than the number of broken generators. The loss of Goldstones may be due to a redundancy or the generation of a gap. In either case...

An effective field theory for forward scattering and factorization violation

Starting with QCD, we derive an effective field theory description for forward scattering and factorization violation as part of the soft-collinear effective field theory (SCET) for high energy scattering. These phenomena are mediated by long distance Glauber gluon exchanges, which are static in time, localized in the longitudinal distance, and act as a kernel for forward...

The Higgs transverse momentum distribution at NNLL and its theoretical errors

In this letter, we present the NNLL-NNLO transverse momentum Higgs distribution arising from gluon fusion. In the regime p ⊥ ≪ m h we include the resummation of the large logs at next to next-to leading order and then match on to the α s 2 fixed order result near p ⊥ ∼ m h . By utilizing the rapidity renormalization group (RRG) we are able to smoothly match between the resummed...

Constraints on galactic wino densities from gamma ray lines

We systematically compute the annihilation rate for neutral winos into the final state γ + X, including all leading radiative corrections. This includes both the Sommerfeld enhancement (in the decoupling limit for the Higgsino) and the resummation of the leading electroweak double logarithms. Adopting an analysis of the HESS experiment, we place constraints on the mass as a...

Probing quarkonium production mechanisms with jet substructure

We use fragmenting jet functions (FJFs) in the context of quarkonia to study the production channels predicted by NRQCD (3 S 1 (1) , 3 S 1 (8) , 1 S 0 (8) , 3 P J (8) ). We choose a set of FJFs that give the probability to find a quarkonium with a given momentum fraction inside a cone-algorithm jet with fixed cone size and energy. This observable gives several lever arms that...

Towers of gravitational theories

Walter D. Goldberger 0 Ira Z. Rothstein 0 0 I. Z. Rothstein Department of Physics, Carnegie Mellon University , Pittsburgh, PA 15213, USA In this essay we introduce a theoretical framework designed