Conveners
Theoretical developments & Extra dimensions
- Peizhi Du (Stony Brook University)
Description
https://pitt.zoom.us/j/98404207205
A theory that solves the strong CP problem without an axion, makes use of the background properties of a (very) low mass vector dark matter particle, whose spin density is driven to align in such a way as to cancel the theta-bar term.
It is known that local, Lorentz invariant, unitary theories involving particles with spin 1 demand
that the matter sector they couple to are organized by internal physical symmetries and the as-
sociated charge conservation, while spin 3/2 demands supersymmetry. However, the introduction
of a spin 2 graviton does not obviously demand new symmetries of the matter sector (although it
does...
We present a first complete calculation of scattering amplitudes of massive spin-2 Kaluza Klein resonances in extra dimensional theories. Although individual contributions of Kaluza-Klein particle scattering can grow as fast as $E^{10}$, intricate cancellations ensure that the full scattering amplitudes grow only as fast as $E^2$. We provide the necessary sum-rules that ensure such...
We present a first complete calculation of scattering amplitudes of massive spin-2 Kaluza Klein resonances in extra dimensional theories. Although individual contributions of Kaluza-Klein particle scattering can grow as fast as $E^{10}$, intricate cancellations ensure that the full scattering amplitudes grow only as fast as $E^2$. We provide the necessary sum-rules that ensure such...
The geometric approach to the SMEFT is defined, and some applications of this approach to Higgs and Electroweak physics is discussed.
Recently there has been increasing interest in alternate methods to compute quantum tunneling in field theory. Of particular interest is a stochastic approach which involves (i) sampling from the free theory Gaussian approximation to the Wigner distribution in order to obtain stochastic initial conditions for the field and momentum conjugate, then (ii) evolving under the classical field...
Scattering amplitudes are often split up into their gauge (su(N)) and kinematic (two copies of complexified su(2)) components. Since the su(N) gauge part is often calculated using flows of colour, it should similarly be possible to describe the su(2) \oplus su(2) kinematics of an amplitude in terms of flows of chirality. In two recent papers (hep-ph:2003.05877 & hep-ph:2011.10075) we showed...
\documentclass[aps,showpacs,preprintnumbers,amsmath,amssymb,superscriptaddress,floatfix,a4paper,nofootinbib,11pt,floatfix,nofootinbib,onecolumn]{revtex4}
\usepackage{graphicx}
\usepackage{bm}
\usepackage{rotating}
\usepackage{array}
\usepackage{xcolor}
\usepackage{amsmath,amssymb}
\usepackage{mathrsfs}
\usepackage{graphicx}
\usepackage{color}
\usepackage{subfigure}
\usepackage{fancyh...
