I will explore the "elusive universe," where dark matter, neutrinos, and gravity sculpt our observed nature, leaving many open questions.
Our work focuses on opening up new directions to answer these puzzles. I will present two approaches:
1. Using precision astrometry and space mission data to study general relativity, dark matter, cosmic neutrinos, and fifth forces [1, 2].
2. By...
The neutrino oscillation needs parameters to be measured precisely to provide essential information for a modification of the Standard Model. Accomplishing this novel goal in future neutrino experiments requires high flux neutrino beams and powerful combination of near and far detectors. Fermilab’s PIP-II LINAC is an essential element in providing high flux protons to the Long Baseline...
The fundamental nature of dark matter is a central theme of the Snowmass 2021 process, extending across all Frontiers. In the last decade, advances in detector technology, analysis techniques, and theoretical modeling have enabled a new generation of experiments and searches while broadening the types of candidates we can pursue. Over the next decade, there is great potential for discoveries...
I have been a CMS collaborator for nearly 15 years and an LDMX (Light Dark Matter eXperiment) collaborator for the last five years. While CMS is the epitome of a large-scale experiment, LDMX is a small and vibrant collaboration trying to do world-class science with roughly one year's data. I have been fortunate to have had opportunities to engage with CMS in various ways, including hardware...
We would like to highlight some of the reasons to support smaller projects as part of the HEP portfolio with the example of COHERENT, an experimental neutrino physics program that inhabits Neutrino Alley at Oak Ridge National Laboratory at the Spallation Neutron Source.
Today larger experimental collaborations are the primary focus for new physics searches at the intensity frontier. While these large experimental efforts allow us to leap forward in our understanding of fundamental neutrino physics, they have the disadvantage of decades long timescales, and can leave much to be desired for young physicists in training. There is an often understated value to...
Large-scale computing is vital to the success of all current and future high-energy physics experiments, through simulating our understanding of the Standard Model. The use of theory simulation tools spans most of the Snowmass frontiers, including the Energy, Neutrino, Rare Processes and Precision Measurements, Theory, and Computational Frontiers. Recently, members of the HEP community...
The detection of high-energy astrophysical neutrinos by IceCube has opened a new window on our Universe. While IceCube has measured the flux of these neutrinos at energies up to several PeV, much remains to be discovered regarding their origin and nature. Currently, measurements are limited by the small sample size of astrophysical neutrinos and by the difficulty of discriminating between...
The accelerator complex at Fermilab is currently undergoing improvements which will increase the available beam power to the complex and is known as Proton Improvement Plan-II (PIP-II). The PIP-II Linac is slated for operation later this decade and will be the main proton driver for Fermilab experiments moving forward and provide the beam to LBNF/DUNE. However, the DUNE physics program...
Once a flagship next-generation multi-purpose experiment, now the DUNE is a single-purpose experiment with significant delay and significant over-budget, with very poor community support. One of the main problems is there is no exciting phenomenology program to explore new physics with this experiment. I will discuss how one could revive excitement and re-attract interest in the DUNE science.
The next-generation rare pion decay experiment, PIONEER, aims to use the intense pion beam at the Paul Scherrer Institut to study many more pion decays at rest than previous experiments. In this talk, I will discuss the opportunities to detect new light particles in pion decays. In particular, I will show that axion-like particles and dark photons are prime targets for the experiment. These...
Small-scale experiments allow the training of new researchers in how an experiment is sketched, built, and eventually run - providing the opportunity to let the next generation of leaders grow with their experiment, in a smaller spotlight and reduced large-scale dynamics and politics compared to most modern collider-based experiments with thousands of collaborators. It also allows the...
Dear Particle Physics Project Prioritization Panel (P5),
As faculty members from the universities listed below, we write to you to express our strong support for the continued operations of the Dark Energy Spectroscopic Instrument (DESI) and its extension into DESI-II.
DESI has been an incredibly important tool for each of our universities’ research on dark energy, and will be...
The US has been a very productive contributor to hardware and computing at LHC and in the HL-LHC upgrades owing to the indispensable synergy between universities and national labs. There are numerous examples of HL-LHC upgrade projects for ATLAS and CMS with tight coordination between the two. Often the labs have highly specialized facilities (e.g. SiDet at FNAL) where lab and university...
The current state of affairs in particle physics is a multitude of probes for new physics and to challenge the Standard Model. The prime instrument is and remains the LHC and its upgrades the HL-LHC. In order to bridge and leap into the future we need to make a sustained effort to support and enhance R&D activities for next detectors at future colliders. Any of the currently envisioned future...
