Cosmic-ray observations provide a powerful probe of dark-matter annihilation in the Galaxy. In this talk I present recent analyses of the AMS-02 antiproton data, reducing cosmic-ray propagation uncertainties by fitting at the same time dark-matter and cosmic-ray propagation parameters.

# Events Archive

## Phenomenology Seminar

### Pheno & Vino Seminar | Jan Heisig, CP3 UC Louvain | "Probing dark matter with cosmic-ray antiprotons" Zoom link: bit.ly/phenoandvino

### Pheno & Vino / Siddharth Mishra-Sharma, NYU | "Statistical inference of dark matter substructure with weak and strong gravitational lensing" | bit.ly/phenoandvino

I will describe two separate methods to statistically infer the properties of dark matter substructure using, in turn, (astrometric) weak and strong lensing observations.

### Pheno & Vino | Carlos Blanco, U of Chicago | "New Constraints on Dark Matter from Organic Targets: What Organic Chemistry Can do for Direct Detection" | Zoom link: bit.ly/phenoandvino

As the age of WIMP-scale dark matter (DM) draws to a close thanks to the ever-increasing sensitivity of direct detection experiments, the majority of sub-GeV DM parameter space remains to be explored. Sub-GeV DM can excite electronic transitions in a variety of molecular and nano-scale systems which have sub-eV scale thresholds.

### Pheno & Vino Seminar | Djuna Croon, TRIUMF "Gravitational Waves: a new window onto the Early Universe" | Zoom link - bit.ly/phenoandvino

In anticipation of the next generation of gravitational wave experiments, I will discuss the opportunities for phenomenological studies of particle physics in the Early Universe.

### Pheno & Vino | JiJi Fan, Brown University | "Direct detection experiments in the Gaia era" | via Zoom

The advent of the Gaia era has led to potentially revolutionary understanding of dark matter dynamics in our galaxy, which has important consequences for direct detection experiments. In this talk, I will discuss the effects of various dark matter substructures inferred from the Gaia data on possible direct detection signals at next-generation...

### Pheno & Vino | Prasnth Shyamsundar, U of Florida | "Quantum computing and machine learning in high energy data analysis" | Jadwin 303

Recently there has been a growing interest in the application of quantum computing and machine learning in many scientific disciplines, including high energy physics. In the first half of this talk, we will look at a novel quantum computing based technique to search for unmodeled deviations from a simulated expectation in high-dimensional...

### Pheno & Vino Seminar | Alexander Mitov, Cavendish Lab, Cambridge | "The 2 to 3 Frontier in NNLO LHC calculations" | 303 Jadwin Hall

For the last 5 years or so, there has been a major effort towards the calculation of two-loop 5-point QCD amplitudes and their corresponding LHC cross-sections at NNLO. Very recently, the first such calculation - 3-photon production - was completed [arXiv:1911.00479]. I will explain the novel features, and lessons learned, in regard to 5-point...

### Pheno & Vino Seminar | Timothy Cohen, U of Oregon | "The Higgs Effective Theory is a Black Hole" | Jadwin 303

Treating the Standard Model as an Effective Field Theory (EFT) yields a general framework for exploring deviations in observables that probe the indirect effects of new particles. Two treatments are typically discussed --- Higgs EFT (HEFT) and Standard Model EFT (SMEFT) --- my goal in this talk is to compare and contrast them. The key...

### Pheno & Vino Seminar | Christoph Weniger, U of Amsterdam | "Uncovering Dark Matter with Compact Objects and Automatic Differentiation" | Jadwin 303

The nature of dark matter (DM) in the Universe remains one of the great open questions of particle astrophysics and cosmology today. The WIMP (weakly interacting massive particle) DM paradigm has fallen, leaving us with a wide range of possible DM models and signatures. New methods and ideas are required to efficiently progress.

### Pheno & Vino Seminar | William Terrano, Princeton | "Direct Detection Searches for Fuzzy Dark Matter and Ultra Low Mass Axions at Princeton" | Jadwin 303

I will discuss experimental prospects for directly detecting ultra-low-mass dark matter, including the interesting “Fuzzy” dark matter scenario. I will describe experiments which are ongoing here at Princeton, and the challenges associated with them. I will also present the results we have thus far, and the prospects for future improvements...

### Pheno & Vino Seminar | Cara Giovanetti, Princeton | "Dynamical Friction in a Fuzzy Dark Matter Universe" | Jadwin Hall

Fuzzy Dark Matter (FDM) is a model of dark matter consisting of an ultralight scalar whose quantum mechanical nature is manifest at kiloparsec scales. As such, an object moving through an FDM halo will experience a different drag force due to dynamical friction than an object passing through a classical dark matter halo. This effect is...

### Pheno & Vino Seminar | Da Liu, UC Davis | "Composite Higgs Models at the LHC and beyond" | Jadwin 303

Compositeness is an elegant way to address the hierarchy problem. In this talk, under broad assumption of partial compositeness and Higgs doublet as the pseudo-Nambu-Goldstone bosons, I will discuss about phenomenology of the spin-1 resonances and the top partners in CHMs and the relevance of their strong interactions in the searches at the...

### Pheno & Vino Seminar | Maurizio Pienni, CERN | "Deep Learning facing the High Luminosity LHC challenge" | Jadwin 303

In its high-luminosity phase, the CERN Large Hadron Collider will produce x10 more data, while the computing power for data processing will not scale accordingly. Particle physicists need novel solutions to accomplish the scientific mission of the LHC. Deep Learning has the potential to be the game changer that could solve the problem.

### Pheno & Vino Seminar | Simona Murgia, UC, Irvine | "Gamma-ray observations of M31 and dark matter implications" | Jadwin 303

The Andromeda galaxy is the closest spiral galaxy to us. It harbors a massive dark matter halo which may span up to ∼600 kpc across and comprises ∼90% of the galaxy’s total mass.

### Pheno & Vino Seminar | Prateek Agrawal, Harvard | "A CMB Millikan experiment with axion strings" | Jadwin 303

Very light axions are a generic prediction of string compactifications. If cosmic strings associated with these axions were produced in the early universe, they quickly approach a so-called scaling solution, such that strings persist in the sky today. I will present some remarkable signals of such strings coupled to photons.

### Pheno & Vino Seminar | Jo Dunkley, Princeton University | "How fast is the universe growing?" | Jadwin 303

There is currently a (possible) tension between various measurements of the Hubble expansion rate. I will give a recap of this issue, and describe how we use the Cosmic Microwave Background to infer the local expansion rate.

### Pheno & Vino Seminar | Jack Setford, Toronto | "Signatures of Mirror Stars" | Jadwin 303

Motivated by theories of neutral naturalness, I will argue that Mirror Stars are a generic possibility in any hidden sector with analogues of Standard Model electromagnetism and nuclear physics.

### Pheno & Vino Seminar | Jessie Shelton, U of Ilinois | "Dark Thermal Histories" | Jadwin 303

One generic scenario for the dark matter of our universe is that it resides in a hidden sector: it talks to other dark fields more strongly than it talks to the Standard Model. I'll discuss some minimal cosmological origin scenarios for this class of models and explore their consequences for the observability of dark states today. Some...

### Pheno & Vino Seminar | Brandon Melcher, Syracuse | "Co-Decaying Dark Matter and its Cosmological Signatures" | Jadwin 303

This talk will follow the discussions found in https://arxiv.org/abs/1711.04773 and https://arxiv.org/abs/1902.04082.

### Pheno & Vino Seminar | Marat Freytsis, Rutgers | "Functional methods and universal one-loop matching in HQET and beyond" | Jadwin 303

Functional methods, in particular efficient reorganization of the one-loop effective action, have recently made a reappearance in simplifying the problem of computing matching and running effects in Lorentz-invariant effective field theories (EFTs) such as the Standard Model Effective Field Theory.