Monday, December 9
Theoretical Astrophysics Seminars
Speaker: Sijing Shen (UC-Santa Cruz)
Location: UCB – Hearst Field Annex B5, 12:10 p.m.
Speaker: Bob Jacobsen (UCB/LBNL)
Location: UCB – 402 Old Le Conte, 2:30 p.m.
Title: “First Dark Matter Results from the LUX Experiment at SURF”
Physics Department Colloquium – no colloquium today
Tuesday, December 10
Berkeley Cosmology Seminars – no colloquium today
Speaker: David Morrison (UC-Santa Barbara)
Location: UCB – 402 Old Le Conte, 3:40 p.m.
Title: “Classification of 6D SCFTs”
Physics Research Progress Meeting
Speaker: Simon Viel (U. of British Columbia)
Location: LBNL – 50A-5132, 4 p.m.
Title: “Looking for a New Force of Nature with ATLAS: Searches for Exotics and Higgs in Final States with Two Muons or Electrons”
Abstract: The question of physics beyond the Standard Model remains as crucial as it was before the discovery of a Higgs boson in at the Large Hadron Collider, as the theoretical and experimental shortcomings of the Standard Model remain unresolved. Many hypotheses addressing these issues predict the existence of new neutral resonances decaying into electron or muon pairs. New particles could also manifest themselves via their contributions to Higgs production and decay rates, and studying vector-boson-fusion Higgs production decaying to two W bosons is of particular interest as it probes our understanding of WW → WW scattering. This talk will present how the very different challenges inherent to these two analyses were overcome, along with results from ATLAS using data collected in Run-I of the LHC.
Wednesday, December 11
Weekly BOSS lunch
LBNL – TBA – noon
Particle Theory Seminar - no seminar today
String Group Meeting – no meeting today
Speaker: Juan Maldecena (IAS)
Location: UCB – 402 Old LeConte, 3:40 p.m.
Title: “Entanglement and Geometry”
Speakers: *Daniel L. Shafer, Dragan Huterer – Chasing the phantom: A closer look at type Ia supernovae and the dark energy equation of state – http://arxiv.org/abs/1312.1688
*Brandon Patel – Three Gravitationally Lensed Supernovae Behind CLASH Galaxy Clusters – http://arxiv.org/abs/1312.09433
*J. Nordin et al – Lensed Type Ia Supernovae as Probes of Cluster Mass Models – http://arxiv.org/abs/1312.2576
Location: LBNL – INPA Common Room 50-5026, 3:30 p.m.
Thursday, December 12
Speaker: Adam Wade Bradley (Case Western)
Location: LBNL – 50-5014, 12:00 p.m.
Title: “The LUX Dark Matter Hunt”
Abstract: The LUX Dark Matter experiment is a 370-kg two-phase liquid xenon detector deployed in the Davis Campus at the 4850′ Level of SURF in Lead, SD, to hunt for WIMP dark matter, a candidate for the majority component of matter in the universe. Commissioned at the end of 2012, the LUX detector achieves stable operation at liquid xenon temperatures through the use of a simple, economical, and powerful thermosyphon cryogenics cooling system. LUX recently completed an unblinded 85-day WIMP hunt where a study of radon-sourced alphas was combined with thorough background measurements and modeling for use in a profile likelihood ratio analysis of the data within a 118-kg fiducial mass of the target xenon. The leading dark matter limit from the first LUX results is presented here.
Astronomy department lunch
Location: UCB – 166 Barrows, 12:30 p.m.
Astronomy Colloquium - no colloquium today
Particle Theory Seminar
LBNL – 50A-5132, 2:00 p.m.
Speaker: Jessie Thaler (MIT)
Title: “Jets without Jets”
Physics Research Progress Meeting
Speaker: Ashley Ross (U. of Portsmouth)
Location: LBNL – 50A-5132, 4:00 p.m.
Title: “Making Robust and Precise Physical Measurements Using Galaxy Surveys”
Abstract: What is the nature of Dark Energy? Can we detect deviations from General Relativity (GR)? What is the mass of the neutrino(s)? These fundamental questions can be addressed by analyzing the clustering of galaxies and I will explain how using examples of measurements made using the SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS). I will describe the BOSS data, the methods we use to measure the clustering of BOSS galaxies, and how our most recent clustering measurements have allowed us to measure the distance to BOSS galaxies to within 1% precision. I will further describe some of the technical challenges and systematic concerns in our analysis, and the methods and measurements we have used to ameliorate these concerns. I will conclude with a discussion of the results that will be afforded by future surveys, such as DESI.
Friday, December 13
Speaker: Amir Hajian (CITA)
Location: LBNL – INPA Common Room (50-5026), 12:00 p.m.
Title: “Exploring the Microwave Sky Beyond CMB using Cross Correlations”
Abstract: Past decade has been a golden era for precision cosmology. Cosmological surveys combined with Cosmic Microwave Background (CMB) provided us with valuable tools for studying the physics of the universe. Using a series of high-resolution and high-sensitivity CMB experiments, we have learned a great deal about the material content, shape and structure of the universe. These achievements have come about with the help of precise characterization of the statistical properties of the CMB fluctuations. In this talk, I will discuss the new astrophysical playground the current generation of the CMB experiments has opened up for us. I will describe how interesting information, beyond the traditional CMB power spectrum parameters, can be extracted from CMB data using cross correlations with the large scale structure surveys. I will present two recent results measuring thermal Sunya’ev Zeldovich effect and the Cosmic Infrared Background using cross correlations of CMB with X-ray and infrared dat
Speaker: Daisuke Nagai (Yale)
Location: UCB – SSL Addition Conference Room – 3 p.m.
Title: “Galaxy Clusters in the Era of Precision Cosmology”
Abstract: Galaxy clusters are the most recently formed cosmological objects in the universe, making them ideal for studying the interplay between cosmology and baryonic physics in structure formation. Understanding their formation and growth requires not only an understanding of the baryonic physics behind gas cooling, star and black hole formation, and feedback processes, but also the detailed dynamics of how gas accretes from the cosmic filaments onto the virialization regions in the outskirts of galaxy clusters throughout their lifetime. Recent X-ray and microwave observations have revealed detailed thermodynamic structure of the hot X-ray emitting plasma from their cores to the virial radii, making comparisons of baryonic component in simulations to observations a strong cosmological probe. In this talk, I will review recent progress in our understanding of cluster astrophysics and discuss future prospects, opportunities and challenges for the use of galaxy clusters as a precision cosmological probe.
January 28, Tuesday - 1:10 pm (Cosmology-BCCP)
Speaker: Marcel van Daalen, Leiden
Location: UCB, Hearst Field Annex, B1 (also videoconferenced to 50-5026)