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Kevin Kelly (Texas A&M University)27/05/2026, 08:50
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27/05/2026, 09:00
Abstract pending
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Kuver Sinha (University of Oklahoma)27/05/2026, 09:25
To what extent can quantum information science (QIS) tell us new things about the S-matrix? For example, can you derive the symmetries of the S-matrix from QIS principles? Conversely, can known properties of the S-matrix: the language of gauge invariance, flavor symmetries, Ward identities, etc. - be reframed in equivalent QIS terms? I will review some recent work done by our community on this...
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dorival Gonçalves (Oklahoma State University)27/05/2026, 09:50
Angular correlations in Higgs decays to electroweak gauge bosons, $h\to ZZ^*, WW^*$, provide a powerful probe of both new physics effects and quantum information observables. We present a systematic study of these Higgs decays, including NLO QCD and NLO electroweak corrections. We find that QCD effects induce modest percent-level shifts in the angular observables, while electroweak corrections...
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Rachel Jordan Hyneman (University of Arizona (US))27/05/2026, 10:15
Higgs boson pair production (HH) plays a central role in probing the Higgs boson self-interactions, which are key to understanding the shape of the Higgs potential and the mechanism of electroweak symmetry breaking. This talk presents the latest results from the ATLAS and CMS experiments on non-resonant Higgs boson pair production, based on the full Run 2 dataset collected at $\sqrt{s}$ =...
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Scott Watson27/05/2026, 11:10
I will discuss recent work on the production of both axions and WIMPs in UV-complete theories of the early universe. This approach is naturally motivated by the challenge of embedding inflation and its aftermath, up to BBN, in a fundamental theory.
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Savvas Koushiappas27/05/2026, 11:35
I will discuss a new approach to understanding the accelerated expansion of the universe that connects quantum mechanics and general relativity at the level of horizon kinematics. This idea gives rise to a geometric modification of the Friedmann equation with no new particles or fields and makes testable predictions with current and next-generation surveys.
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Rouzbeh Allahverdi (University of New Mexico)27/05/2026, 12:00
We present a scenario where primordial black holes (PBHs) formed in a radiation-dominated (RD) phase undergo significant accretion during a period of early matter dominated (EMD), as a result of which their mass can grow by up to two orders of magnitude. Restricting to the linear perturbation regime, we compute the gravitational wave (GW) spectrum that features two peaks: a high-frequency peak...
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Peisi Huang27/05/2026, 12:25
We consider a dark sector consisting of fermionic dark matter (DM) charged under a broken dark $U(1)_D$ gauge symmetry, interacting with the Standard Model through kinetic mixing. In such models, the DM annihilation cross section is typically suppressed by the small kinetic mixing and or a heavy mediator, often leading to an overabundant relic density. We show that the observed DM abundance...
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Dr Arnab Dasgupta (PITT-PACC)27/05/2026, 14:30
We propose a novel cogenesis mechanism by utilising the two-body decay of heavy vector-like fermions to dark matter (DM) $\chi$ and right chiral part of light Dirac neutrino $\nu_R$ via the electromagnetic dipole operator. This leads to generation of asymmetry in dark fermion $\chi$ as well as $\nu_R$ with the latter getting transferred to left-handed lepton doublets via Yukawa interactions...
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Dr Debasish Borah (Indian Institute of Technology Guwahati)27/05/2026, 14:55
The persistent null results at dark matter (DM) direct-detection experiments have pushed the popular weakly interacting massive particle (WIMP) DM to tight corners. Generic WIMP models with direct-detection rate below the current upper limits often lead to a thermally overproduced relic abundance after freeze-out. To resolve this conundrum, we propose a novel scenario where DM has...
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Adrian Thompson27/05/2026, 15:20
We study rare three- and four-body kaon decays as a probe of light vector and axial-vector bosons coupled to non-conserved currents. We find that searches for $K_L \to \pi^0 \pi^0 (X\to e^+e^-)$ decays constrain the couplings of light $X$ bosons to light quarks to be as small as $\mathcal{O}(10^{-5})$. The charged-pion modes $K^+ \to \pi^+ \pi^0 (X \to e^+e^-)$ and $K_L \to \pi^+ \pi^- (X \to...
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27/05/2026, 15:45
Abstract pending
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Benjamin John Rosser (University of Chicago (US))27/05/2026, 16:50
Collider searches for long-lived particles (LLPs) that travel an observable distance inside a detector before decaying have become increasingly common in the past decade. Many theories of Beyond the Standard Model physics predict such particles with a variety of potential lifetimes, and searches for these particles have required the introduction of new, innovative experimental techniques. In...
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Prof. Carlos Arguelles Delgado (Harvard University)27/05/2026, 17:15
I will present the status of TAMBO.
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Prof. Jae Yu (University of Texas at Arlington (US))27/05/2026, 17:40
The neutrino flavor oscillation, discovered and confirmed through mid-2000s is a firmly established phenomenon. Since the flavor oscillation occurs due to the fact that the flavor and mass eigenstates differ, it requires the Standard Model to be modified. Precision measurements of the neutrino properties to reflect their non-zero mass into the Standard Model require high statistics samples...
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Vedran Brdar (Oklahoma State University (US))28/05/2026, 09:00
Axion-like particles (ALPs) appear in many beyond-the-Standard-Model theories, either as candidates for dark matter or as partners of the axion that explains the apparent conservation of charge-parity symmetry, known as the strong CP problem. In this talk, I will present a novel method for probing ALPs using eclipsing binary systems which can serve as an astrophysical realization of...
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Shirley Li (UC Irvine)28/05/2026, 09:25
Isolated neutron stars (INS) are the simplest kinds of neutron stars, but only seven have been discovered and confirmed. We show that in the near future, the Vera Rubin Observatory (VRO) will be able to identify new INS candidates. In this talk, we outline a proof of concept for predicting the signals from INS as seen by VRO, as well as a method for separating those signals from backgrounds....
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Gustavo Marques-Tavares (University of Utah)28/05/2026, 09:50
Light scalars mixing with the Higgs boson are one of the few renormalizable dark sector portals, and are featured in many BSM models. Considering scalars produced in core-collapse supernovae allows one to extend sensitivity to far smaller couplings than can be probed at accelerators, which are fundamentally limited by luminosity. However, existing supernova bounds have left a substantial gap...
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Prof. Kimberly Boddy (University of Texas at Austin)28/05/2026, 10:15
Pulsar timing array experiments use high-precision timing of millisecond pulsars in the Milky Way to search primarily for nHz-frequency gravitational waves. Timing data is also sensitive to the presence of ultralight dark matter (ULDM) in the Galaxy: the ultralight field behaves as a classically oscillating wave that creates metric perturbations, imprinting a deterministic oscillatory...
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Adrienne Erickcek28/05/2026, 11:10
If dark matter is not completely cold, the random motions of dark matter particles erase density fluctuations on scales smaller than their free-streaming length. This suppression contributes to the cosmological upper bound on the sum of the neutrino masses, which is uncomfortably close to the minimal value allowed by measurements of neutrino oscillations. It would seem that reducing the...
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Joel Meyers (Southern Methodist University)28/05/2026, 11:35
Recent observations of the cosmic microwave background and baryon acoustic oscillations show some tension with the expectations of LCDM cosmology, favoring a non-standard expansion history and placing uncomfortably strong constraints on neutrino mass. Both effects can be interpreted as a negative neutrino mass parameter, one describing the change to the expansion history and the other one...
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Tien-Tien Yu (University of Oregon (US))28/05/2026, 12:00
High-energy muon colliders represent a compelling option for a future collider program, offering unique and rich physics opportunities. At sufficiently high energies, the muon can be thought of as having constituents described by muon parton distribution functions (PDFs). In this seminar, I present an analysis strategy for probing Beyond the Standard Model (BSM) physics through modifications...
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Dr Innes Bigaran (Fermilab and Northwestern University)28/05/2026, 12:25
Future muon colliders offer direct access to neutrino interactions at TeV scales. At high energies, electroweak radiation qualitatively reshapes lepton collisions: energetic muons can radiate W bosons, generating an intense flux of neutrinos within the beam and effectively turning the collider into a source of neutrino–lepton collisions. In this talk, I introduce an electroweak parton...
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Ian Lewis (The University of Kansas)28/05/2026, 14:30
Colliders continue to push our understanding of electroweak (EW) interactions to ever higher energies. At high energies, the broken EW theory measured is expected to converge to the unbroken theory. This is the electroweak restoration regime. In this talk we investigate how linear and non-linear realizations of the EW symmetry can be probed by comparing the relative longitudinal di-boson...
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Saptaparna Bhattacharya (Southern Methodist University (US))28/05/2026, 14:55
Despite the spectacular success of the Standard Model (SM), the fundamental nature of physics beyond it (BSM) remains elusive. With the absence of direct discoveries at the LHC, I posit that precision measurements are a pathway to new physics. Standard Model Effective Field Theory (SMEFT) offers a robust framework to systematically parameterize and constrain the indirect, low-energy footprints...
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Lorenzo Ricci28/05/2026, 15:20
Energy correlators (ECs) provide a powerful tool to study QCD dynamics. On the one hand, they are infrared safe and precisely calculable in perturbation theory. On the other hand, they encode rich information about the underlying partonic dynamics. In this talk, I discuss their potential as probes of new physics, focusing on the case of a boosted light resonance hiding within SM jets. I show...
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28/05/2026, 15:45
Abstract Pending
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Adam Martin (University of Notre Dame)28/05/2026, 16:50
The pattern in the Standard Model (SM) charges can be traced to an ambiguity in the gauge group of the SM. The easiest way to resolve this ambiguity would be to discover a particle with electric charge that is an integer multiple of e/6 (beyond +/- e, 0). The discovery of such fractionally charged particles would also challenge and potentially rule out many minimal unification models. In this...
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Dariush Garvin Imani (Univ. of California Santa Barbara (US))28/05/2026, 17:15
Millicharged particles (mCPs) represent a striking example of exotic phenomenology stemming from a relatively simple hidden sector Dark Matter model. Moreover, fractionally charged particles remain subject to relatively few constraints from either indirect or direct observations at masses close to the electroweak scale. The milliQan experiment at the Large Hadron Collider is a subdetector of...
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Nikita Blinov (York University)28/05/2026, 17:40
Accurate signal predictions are essential for interpreting and optimizing fixed-target searches for new physics. Even in minimal models such as the dark photon ($A'$) or millicharged particles (mCPs), theoretical uncertainties in hadronic production can be substantial. We introduce a data-driven framework that predicts both the rate and kinematic distributions of $A'$ and mCP production...
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Andrew Long (Rice University)29/05/2026, 09:00
This talk is based on a recent paper in which my collaborators and I have explored how the cosmological excess of matter over antimatter can arise through the phenomenon of cosmological gravitational particle production at the end of inflation in a Type-I Seesaw model of nonthermal leptogenesis. From a model-building standpoint, this scenario is appealing for being minimal and economical,...
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Prof. Andrew Zentner (University of Pittsburgh)29/05/2026, 09:25
Since the pioneering work of Leonard Parker and collaborators in the 1960s, it has been known that the evolving cosmological spacetime can result in the production of particles in the frame of comoving observers. I will review how gravitational particle production works in a manner accessible to a broad audience. I will then describe a study of non-adiabatic particle production during the...
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Zackaria Chacko (University of Maryland, College Park)29/05/2026, 09:50
I discuss fifth forces mediated by an ultralight scalar that arises as a composite pseudo-Nambu-Goldstone boson from a strongly coupled hidden sector. In this framework, the scalar couples to the Standard Model through the hypercharge portal, and its interactions are softened above the compositeness scale by form factors. This can significantly weaken the bounds from equivalence principle (EP)...
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Can Kilic29/05/2026, 10:15
Portal models, where new physics lives in a hidden sector neutral under the SM gauge groups provide a relatively weakly constrained way to extend the SM at the GeV-to-TeV scale. In this talk I will focus on some novel experimental signatures of the neutrino portal to a non-minimal hidden sector, as well as the phenomenology of a Z-prime model coupled to a non-anomalous and flavor-universal...
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Jason Kumar29/05/2026, 11:10
Indirect searches for dark matter using dwarf spheroidal galaxies are limited by systematic uncertainties in modeling diffuse gamma-ray backgrounds. We present a likelihood-based comparison of locally constructed empirical background models and theoretically-motivated models which incorporate the Fermi-LAT diffuse background. The empirical models include both an independent-binning approach...
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Sukanya Chakrabarti29/05/2026, 11:35
For over a century, our understanding of dark matter has hinged on kinematic estimates of accelerations derived from static snapshots of stellar positions and velocities. However, kinematic methods can be inaccurate for a time-dependent potential, and there are now many lines of observational evidence that show that our Galaxy has had a highly dynamic history. Over the last several years, we...
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Lina Necib (MIT)29/05/2026, 12:00
In this talk, I will explore the interfacing of simulations, observations, and machine learning techniques to construct a detailed map of Dark Matter in the Milky Way, focusing on the Galactic Center/Halo and dwarf galaxies. For the Galactic Halo, I will present a recent work leveraging Gaia DR3 that reveals a decline in the stellar circular velocity, inducing tensions with established...
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Nassim Bozorgnia29/05/2026, 12:25
The Large Magellanic Cloud (LMC) can significantly impact the dark matter halo of the Milky Way, and modify the dark matter velocity distribution in the Solar neighborhood. Cosmological simulations that sample potential Milky Way formation histories provide a powerful framework to characterize the dynamical imprint of the LMC-Milky Way interaction on the local dark matter distribution. I will...
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Julia Gehrlein (Colorado State University (US))29/05/2026, 14:30
The flavor puzzle remains one of the biggest open questions in particle theory and upcoming results from neutrino experiments will provide a large impact on its solution. While it is difficult to constrain many classes of leptonic flavor models at the moment, this will change in coming years as several yet unknown quantities will be measured with some precision. Combined with expected...
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Asher Berlin (Fermilab)29/05/2026, 14:55
Neutrinos oscillate into antineutrinos in a background of ultralight vector dark matter coupled to lepton number, such as the gauge boson of B-L. This effect is suppressed by the small neutrino mass, but the enhancement by long astrophysical baselines can enable uncharted parameter space to be explored by future searches for solar and supernova antineutrinos. For instance, the observation of a...
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Gustavo Alves29/05/2026, 15:20
We examine decoherence in neutrino oscillations induced by an ultralight scalar field coupled to neutrinos. The scalar induces time- and position-dependent shifts in the neutrino mass matrix. Neutrinos sample different field configurations throughout an experimental data-taking period, which leads to damping effects in the oscillation pattern in the form of decoherence. By recasting the...
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Stephan Meighen-Berger (University of Iowa)29/05/2026, 15:45
We propose a new approach to measure the CP-violating phase in neutrino mixing using atmospheric neutrinos, improving upon prior work. Because it is subject to systematic uncertainties that differ from those affecting accelerator-based measurements, the two approaches are complementary, and their combination can yield stronger constraints on δ₍CP₎. In particular, the differing energy ranges,...
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Brian Thomas Batell29/05/2026, 16:50
N-naturalness addresses the electroweak hierarchy problem by introducing N Standard Model copies with different Higgs mass-squared parameters. Reheating via a “reheaton” deposits most energy into one sector and smaller fractions into the others. While the Standard Model is usually identified with the sector having the lightest negative Higgs mass-squared, we show that resonant reheaton–Higgs...
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Ankur Verma (University of South Dakota)29/05/2026, 17:15
We study extended warped extra-dimensional models in which gravity propagates to a deep infrared brane with warped scale $\Lambda_{IR} \sim \mathcal{O}(\mathrm{MeV})$, leading to a dense KK graviton tower with MeV-scale spacing. We present a DUNE-motivated model realization of the photon portal to this tower. The visible electroweak gauge sector extends to an intermediate GeV brane, and...
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29/05/2026, 17:40
Abstract pending
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Brooks Thomas30/05/2026, 09:00
One effective way of learning about the production and properties of dark matter in the early universe is by extracting information about the primordial dark-matter phase-space distribution from the matter power spectrum. Recently a simple empirical formula was introduced which is capable of reproducing most of the salient features of the dark-matter phase-space distribution — even in...
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Dr Juehang Qin30/05/2026, 09:50
There are numerous theoretical candidates for dark matter significantly heavier than the WIMP scale ($\sim 100$ GeV), yet such models are less explored by experimental efforts. In this talk, I will discuss our progress searching for ultraheavy dark matter above 1 PeV in mass using a magnetically levitated setup with a 0.3 mg test mass and less than 100 aN/$\sqrt{\text{Hz}}$ of force noise. I...
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30/05/2026, 10:15
Abstract pending
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Anil Thapa (Colorado State University)30/05/2026, 10:40
In this talk, I first present a mechanism for generating neutrino magnetic moments without generating corresponding neutrino mass. With a careful choice of $SU(2)_L$ representations for the fields running in the loop, only the dipole operator involving the neutral $SU(2)_L$ gauge boson is generated. The corresponding mass diagram, obtained by removing the external gauge boson, simply vanishes....
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Benoit Assi (Fermilab)30/05/2026, 11:10
A confining $SU(15)$ chiral gauge theory has recently been proposed in which the Standard Model fermions and Higgs emerge as composite bound states. After reviewing the model and the proton-decay constraints that place its compositeness scale in the $10^3$–$10^5$ TeV window, I will discuss the flavour signatures that the same dynamics predicts: a benchmark fit reproduces the SM masses and CKM...
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Dr Mudit Jain30/05/2026, 11:35
To be written
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30/05/2026, 12:00
Abstract pending
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Kevin Kelly (Texas A&M University)30/05/2026, 12:25
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