Abstract: In this talk I will discuss the reliability of the Baryon Acoustic Oscillation (BAO) signal in the distribution of galaxies. The solid theoretical understanding of this observable means that it represents one of only a few cosmological observables that …
ABSTRACT: Experiments at the Large Hadron Collider are characterizing the top quark and its interactions to unexpected precision. The combination of direct searches for new particles and indirect constraints from precision measurements provides powerful limits on extensions of the Standard …
Marcel Vos (CERN) "Prospects for Top Physics at the LHC and Beyond" Read More »
ABSTRACT: One of the most enticing and popular additions to the Standard Model of particle physics, Supersymmetry, is the target of a wide range of searches at the Large Hadron Collider at CERN. The ATLAS and CMS experiments have produced …
Zachary Marshall (LBNL) "Title: Searching for SUSY in Big Data at the LHC" Read More »
Abstract: The ATLAS Detector is in the process of upgrading its Trigger and Data Acquisition system to include global processing of tracks using the FastTracKer (FTK). The FTK uses a parallelized structure to identify and reconstruct the properties of tracks …
Tova Holmes (ATLAS) "The FTK: Global Tracking for the ATLAS Trigger" Read More »
ABSTRACT: Despite the lack of a sparticle discovery at the Large Hadron Collider, and despite the fact that most of the discovery potential has shriveled to an upsetting size, supersymmetry (SUSY) remains the most motivated solution to the Standard Model's …
Larry Lee (Harvard) "Searches for Sneaky SUSY at the ATLAS Experiment" Read More »
ABSTRACT: The LBNL xTalk (“cross-talk”) series provides a forum for the exchange of ideas between groups and across lab divisions. Each seminar is focused on a theme which is confronted from two perspectives. In particular, the talks are given by …
Ben Nachman (LBNL) and Mateus Ploskon (LBNL) "Jet Substructure" Read More »
Abstract: Cosmological observations have provided us with answers to age-old questions, involving the age, geometry, and composition of the universe. However, there are profound questions that still remain unanswered. I will describe ongoing efforts to shed light on some of …
Abstract: I will discuss analyses leading to two recent candidate detections of photons from dark matter. Specifically, these are: first, gamma rays in a continuum "bump" at a few GeV which can be due to WIMP-like dark matter annihilation in …
ABSTRACT: Elucidating the nature of dark matter is one of the central challenges in fundamental physics. Dark matter originating as a thermal relic from the early Universe is arguably one of the most compelling paradigm, and WIMP searches have been …
Bertrand Echenard (Caltech) "Probing light dark matter with the LDMX experiment" Read More »
Abstract: Strong HI absorbers are essentially the largest foreground contamination for Lyman alpha forest surveys, and so a better understanding of them is necessary for achieving the goals of future Lyman alpha cosmology surveys. I will talk about a new …