New Perspectives 2024

Session

Dark Sector Physics

9 Jul 2024, 10:45

One West (Fermi National Accelerator Laboratory)

Conveners

Dark Sector Physics

• Gray Putnam ()

Contribution list Timetable

104. The Search for Dark Photons at the Short-Baseline Near Detector

Rohan Rajagopalan (Syracuse University)

09/07/2024, 10:45

The low-energy excess anomaly seen in the MiniBooNE experiment has prompted the development of a plethora of physics scenarios and models. A noteworthy development in various dark sector models has recently shown promise in potentially offering explanation to the anomaly. This analysis focuses on the investigation of a rare three-body decay of charged mesons, and two-body decay of neutral...

115. Scintillating Bubble Chambers for Direct Dark Matter Detection, and an Update on SBC-LAr10

Zhiheng Sheng (Northwestern University)

09/07/2024, 11:00

The Scintillating Bubble Chamber (SBC) Collaboration aims to use the liquid-noble bubble chamber technology as a low-threshold detector for dark matter particles of 1-10 GeV/c². The detector combines the remarkable electron recoil (ER) discrimination of the bubble chamber with the event-by-event energy resolution provided by liquid argon (LAr) scintillation, with the crucial added...

106. DES in 10 Minutes

Yuuki Omori (U.Chicago)

09/07/2024, 11:15

Between 2013 and 2019, the Dark Energy Survey collaboration spent 758 nights on the Blanco Telescope to conduct a comprehensive survey of galaxies, collecting data from more than 300 million galaxies billions of light years away. The survey imaged approximately 4,300 square degrees of the southern sky using five optical filters to carefully characterize individual galaxies. Correlations...

92. OSCURA in 10 Minutes

Edgar Marrufo Villalpando (The University of Chicago)

09/07/2024, 11:30

The Oscura experiment seeks to achieve unprecedented sensitivity in the search for low-mass dark matter particles using a ~10 kg detector array of silicon, ultra-low noise Skipper Charge Coupled Devices (CCDs) with a detection threshold of two electrons and a total exposure of 30 kg-year. Oscura will probe sub-Gev dark matter particles that interact with electrons, targeting dark...

93. Astronomical Spectroscopy with Skipper CCDs: First Results from a Skipper CCD Focal Plane Prototype at SIFS

Edgar Marrufo Villalpando (The University of Chicago)

09/07/2024, 11:45

Ultra-low readout noise detectors will enable increased sensitivity to high-density and high-redshift spectroscopic surveys to place tighter constraints on dark energy and dark matter (e.g., a Stage-5 Spectroscopic Survey). We present the first on-sky results from an ultra-low-readout-noise Skipper charge-coupled device (CCD) focal plane prototype for the SOAR Integral Field Spectrograph...

71. The Proton EDM

Dr Alexander Keshavarzi (University of Manchester)

09/07/2024, 12:00

A storage ring proton electric dipole moment (EDM) experiment (pEDM) would be the first direct search for a proton EDM and would improve on the current (indirect) limit by 5 orders of magnitude. It would surpass the current sensitivity (set by neutron EDM experiments) to QCD CP-violation by 3 orders of magnitude, making it potentially the most promising effort to solve the strong CP problem,...

31. Constraining Cosmological Parameters from Galaxy Cluster Observables: an SBI Approach

Modeling the universe and determining its ultimate fate requires accurate and precise estimation of cosmological parameters such as baryonic density, Hubble’s constant, spectral index, etc. Terabytes of galaxy data would soon be made available by current projects on powerful telescopes like the JWST or future ones like LSST. Analyzing these data requires efficient computational tools, which...

44. Estimation of Combinatoric Background in SeaQuest using an Event-Mixing Method

The $J/\psi$ particle is a spin-1 charmonium state with significant decay fraction towards lepton pairs. The distribution of decay particles from the $J/\psi$ is influenced by its spin alignment, which provides insights into different production mechanisms. SeaQuest, a fixed target experiment at Fermilab, was designed to observe muon pairs from charmonium and Drell-Yan production in $pp$ and...

48. Extraction of Drell-Yan Angular Coefficients using Neural Network-based Classifiers

Study of angular distributions in the Drell-Yan process is a valuable tool for unraveling the structure of hadrons. Measuring the $\cos2\phi$ angular dependence, where $\phi$ denotes the azimuthal angle of dimuons in the Collins-Soper frame, can be used to extract the Boer-Mulders (BM) function. The BM function describes the transverse-polarization asymmetry of quarks within an unpolarized...

42. Iterative Unfolding of the Angular Distribution of Drell--Yan Production in p+Fe Interactions at 120 GeV Beam Energy

In the naive Drell--Yan model, the angular distribution of the Drell--Yan process has zero $\cos2\phi$ modulation, where $\phi$ denotes the azimuthal angle of dimuons in the Collins--Soper frame. However, a sizable $\cos 2\phi$ dependence was observed in pion-induced Drell--Yan experiments, such as the NA10 and E615 experiments. The Boer--Mulders function is a transverse momentum dependent...

32. SuperCDMS in 10 minutes

The existence of dark matter is strongly indicated by various astronomical observations. However, its exact nature and properties are yet to be discovered. The SuperCDMS experiment, currently being built 2 km underground at SNOLAB in Canada, is a collaborative scientific effort to search for dark matter via direct detection. It will employ an array of silicon and germanium crystals...

54. The next generation of Cosmic Microwave Background experiments

The cosmic microwave background (CMB) – relic radiation from soon after the Big Bang – contains a wealth of information on the structure, evolution, and underlying physics of our Universe. Data taken from surveying the CMB has helped to inform and constrain many different models across numerous frontiers in physics, from theories of cosmic inflation, to uncovering the nature of dark matter....