17 research outputs found
Charginos Hiding In Plain Sight
Recent 7 TeV 5/fb measurements by ATLAS and CMS have measured both overall
and differential WW cross sections that differ from NLO SM predictions. While
these measurements aren't statistically significant enough to rule out the SM,
we demonstrate that the data from both experiments can be better fit with the
inclusion of electroweak gauginos with masses of O(100) GeV. We show that these
new states are consistent with other experimental searches/measurements and can
have ramifications for Higgs phenomenology. Additionally, we show how the first
measurements of the WW cross section at 8 TeV by CMS strengthen our
conclusions.Comment: 7 pages, 3 figures v2:significant updates incorporating summer
experimental results, conclusions strengthene
Kinetically-balanced Gaussian Basis Set Approach to Relativistic Compton Profiles of Atoms
Atomic Compton profiles (CPs) are a very important property which provide us
information about the momentum distribution of atomic electrons. Therefore, for
CPs of heavy atoms, relativistic effects are expected to be important,
warranting a relativistic treatment of the problem. In this paper, we present
an efficient approach aimed at ab initio calculations of atomic CPs within a
Dirac-Hartree-Fock (DHF) formalism, employing kinetically-balanced Gaussian
basis functions. The approach is used to compute the CPs of noble gases ranging
from He to Rn, and the results have been compared to the experimental and other
theoretical data, wherever possible. The influence of the quality of the basis
set on the calculated CPs has also been systematically investigated.Comment: 31 pages, 12 figure