BNL Physics Department Videos

Physics Colloquium of 10 March 2020
"A tale told by hard probes in high energy nuclear collisions - from PHENIX to sPHENIX and on toward the EIC"
Jin Huang, BNL

Hard probes such as heavy flavor quarks, jets, and virtual and real photons convey valuable information from the heart of high energy nuclear collisions, opening a window into the microscopic nature of QCD matter. These probes have been used to study both hadronic states and also nuclear matter under extreme conditions. In addition, the spin degree of freedom of the colliding proton provides a fresh perspective on the quantum nature of nuclear matter, enabled by the unique capabilities of RHIC. The rareness of hard probes demands detectors capable of high precision and high rate, which in turn drives the design and the innovation of the next generation of nuclear physics collider experiments, such as sPHENIX and future EIC detectors. I will recount a story told by hard probes of nuclear collisions through selected results from PHENIX, the plans for sPHENIX, and the possibilities at the EIC.

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Physics Colloquium of 25 February 2020
"From actions to answers: flavour physics from lattice gauge theory"
Peter Boyle, BNL

Lattice gauge theory is a numerical approach to the Feynman path integral, and is the only systematically improvable approach to make theoretical predictions of hadronic properties from the underlying theory of quarks and gluons. I will present theoretical numerical calculations of hadronic properties that represent theoretical input to flavour physics, quark flavour mixing, and standard model CP violation in the Kaon, D and B mesons. These lead to constraints on CKM flavour mixing constants of the standard model, and searches for new physics.

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Physics Colloquium of 11 February 2020
"What ever happened to the WIMP of tomorrow?"
Philip 'Flip' Tanedo, UC Riverside

The overwhelming observational evidence for the existence of dark matter is only matched by the awkward scarcity of information about what it might actually be. Laboratory searches for dark matter now appear to exclude many of the "weakly interacting massive particle" models that were favored by particle physicists for decades. Where does that leave the hunt for dark matter? If we've left the WIMP behind, what are we looking for? We give a brief, biased, and largely fictional history of the WIMP in order to establish what has and has not been excluded, and why it matters. This general-interest presentation grew out of discussions with astronomers who wanted to understand why some of their particle physics colleagues are "searching for WIMPs" while the others have decided to live in a "post-WIMP world".

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Physics Colloquium of 4 February 2020
"New opportunities in neutrino physics"
Pedro Machado, Fermilab

In this colloquium I will briefly review the current status of neutrino physics and I will present new opportunities that will be unfolded by the future neutrino program. Some of these opportunities are incremental over past ones, while others are genuinely new. I will also emphasize the interplay between neutrino and other sectors in probing physics beyond the standard model.

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Physics Colloquium of 14 January 2020
"The interface between Arts and Science, a multi-dimensional space"
Helio Takai, The Pratt Institute

The interface between Arts and Science is wide and diverse. Art and Design covers a wide range of activities from Fine Arts to Digital Arts, from Fashion to Industrial Design, and Architecture. In this context, the disciplines of mathematics and sciences have a broad overlap with these creative practices. The science, and technology, from the knowledge of materials to software for virtual and augmented reality, are all foundations to the development of Arts and Design. In all of these areas, one of the main concerns today is the evolution of these practices in a sustainable and ecological manner. Biomaterials, Material Degradation, Software Development, and Robotics, are a few of the subjects relevant to Arts and Design. On the counter flux, Arts can bring new ways to communicate science to a large segment of the population. Art communicates a message through experiences. In this presentation, I will discuss the various interfaces between arts and science, and in particular, those that are relevant to the Pratt Institute.

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Physics Colloquium of 7 January 2020
"The Proton Remains Puzzling"
Haiyan Gao, Duke University

Nucleons (protons and neutrons) are the building blocks of atomic nuclei, and are responsible for more than 99% of the visible matter in the universe. Despite decades of efforts in studying its internal structure, there are still a number of puzzles surrounding the proton such as its spin, mass, and charge radius. The proton charge radius puzzle developed about ten years ago refers to a 5-7 sigma discrepancy between the ultrahigh precise values of the proton charge radius determined from muonic hydrogen Lamb shift measurements and the CODATA values compiled from electron-proton scattering experiments and hydrogen spectroscopy measurements. In this talk I will briefly introduce the proton spin and mass puzzles first. I will then focus on the proton charge radius puzzle, the latest experimental results, and especially the PRad experiment at Jefferson Lab and its result.

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Physics Colloquium of 17 December 2019
"3D imaging of nuclei: status towards an EIC"
Kawtar Hafiti, ANL

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Physics Colloquium of 3 December 2019
"The First Stage of the International Linear Collider"
James Brau, University of Oregon

The International Linear Collider is now proposed to begin with a first stage at 250 GeV with an initial integrated luminosity goal of 2 ab−1. I will review the plan for the collider and detectors, the key physics expectations, and recent international discussions. The key physics goal of the ILC250 is precision measurements of the Higgs boson couplings. The exceptional precision of model-independent measurements of all major decay modes makes this program sensitive to possible anomalies due to new physics beyond the Standard Model. Other physics goals will be addressed briefly. The ILC250 infrastructure will support an upgrade future of experiments with e+e− collisions at higher energy up to 1 TeV, building on the success of the first 250 GeV stage.

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Other Listings

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