VIRTUAL
Si Xie
Teaching a particle detector new tricks: Unlocking the lifetime frontier at the CMS experiment
Abstract:
Long-lived particles are ubiquitous in models of physics beyond the standard model and often play a key role in some of the most interesting problems facing particle physics today. I will present a novel technique to identify and reconstruct LLPs using particle showers in the CMS Muon detector. This unique and striking signature has opened up vast new possibilities for discoveries of LLPs at the LHC that were previously not possible. I will follow a detector-centric approach and discuss how we are using the CMS Muon detectors in ways that it was never designed for but nevertheless excels at. Finally, I will discuss new ideas that have bloomed since and new methods on triggering for Run 3 and the HL-LHC that could even further improve discovery reach by orders of magnitude beyond what has already been achieved.
time: 4:00 p.m.
place: Kolker Room (26-)
IN-PERSON/VIRTUAL
Ben Jones
Single Barium Ion Identification Technologies for Background-Free Neutrinoless Double Beta Decay Searches
Abstract:
The goal of future neutrinoless double beta decay experiments is to establish whether the neutrino is its own antiparticle, by searching for an ultra-rare decay process with a half-life that may be more than 10^28 years. Such a discovery would have major implications for cosmology and particle physics, but requires multi-ton-scale detectors with backgrounds below 0.1 counts per ton per year. This is a formidable technological challenge that seems likely to require unconventional solutions. In this talk, I will discuss new technologies emerging at the interfaces between nuclear physics, microscopy, AMO physics, and biochemistry aim to identify the single 136Ba daughter nucleus produced in double-beta decays of the isotope 136Xe. If these atoms or ions can be collected and imaged with sufficiently high efficiency, the radiogenic backgrounds limiting the sensitivity of all existing technologies could be entirely mitigated. This would enable a new class of large-scale, ultra-low background neutrinoless double-beta decay experiments.
time: 4:00 p.m.
place: Kolker Room (26-)
IN-PERSON
Shirley Li
This is just the beginning
Abstract:
Neutrinos are the most mysterious of the fundamental particles, with little known about even their most basic properties, such as their mixing angles or the origin of their masses. In this talk, I will describe the prospects for the neutrino physics program in the next few decades. I will then discuss the central role GeV neutrino-nucleus interactions play in the theoretical interpretation of modern neutrino experiments and their impact on maximizing the physics potential of the US neutrino program.
time: 4:00 p.m.
place: Kolker Room (26-414)
IN-PERSON
Jianwei Qiu
Nuclear Femtography - A new frontier of science and technology
Abstract:
The proton and neutron, collectively called nucleons, are the fundamental building blocks of all atomic nuclei that make up essentially all the visible matter in the universe. More than 50 years of study have revealed that nucleons are composed of elementary particles called quarks and gluons, whose interactions and dynamics are governed by Quantum Chromodynamics. However, many profound questions remain. Developing a deeper understanding of these building blocks of matter is one of the grand challenges of modern science. In this talk, I will demonstrate that the newly upgraded CEBAF facility at Jefferson Lab and the Electron-Ion Collider, which the US Department of Energy recently approved for construction at Brookhaven National Lab, are two complementary and necessary facilities that are capable of exploring the inner structure of nucleons and nuclei at sub-femtometer distance, enabling a new emerging science and technology - Nuclear Femtography. These facilities will help address the most compelling unanswered questions about the elementary building blocks of our visible world, taking us to the next frontier of the Standard Model of physics.
time: 4:00 p.m.
place: Kolker Room (26-414)
VIRTUAL
Emilio Nanni
The Cool Copper Collider: An Advanced Concept for a Future Higgs Factory
Abstract:
The goal of a next-generation e+e- collider is to carry out precision measurements of the Higgs boson properties that are not accessible at the LHC and HL-LHC. In this talk we will present the study of a new concept for a high gradient, high power accelerator with beam characteristics suitable to study the Higgs boson, the Cool Copper Collider (C3), with the goal of minimizing the capital and operating costs. C3 is based on the latest advances in rf accelerator technology and utilizes optimized cavity geometries, novel rf distribution, and operation at cryogenic temperatures to allow the linear accelerator to achieve high accelerating gradients while maintaining overall system efficiency. We will present the latest demonstrated performance of prototype accelerators and highlight the future development path for C3.
time: 4:00 p.m.
place: Kolker Room (26 - )
IN-PERSON
Nathaniel Craig
The Case for a Muon Collider
Abstract:
As the LHC begins Run 3, planning for future high-energy colliders has entered a critical phase. In this talk, I’ll highlight the physics case for a multi-TeV muon collider as a compelling successor to the LHC that is ideally suited to addressing the open questions of the Standard Model. Recent progress on long-standing accelerator and detector challenges makes it plausible that such a collider could begin operation shortly after the end of the LHC.
time: 4:00 p.m.
place: Kolker Room (26 -414)
