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Dr Enrico Lunghi (Indiana University)11/11/2023, 09:30
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Taegyu Lee (Indiana University)11/11/2023, 10:00
SMEFT is an efficient tool to parametrize the effect of BSM physics in a model-independent way. We study di-Higgs and tri-Higgs productions at the muon collider which is parametrized by the dimension 6 mass operator. We also study di-boson and tri-boson processes which also include the production of Goldstone bosons. We discuss possible model dependence of multi-boson processes resulting from...
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Beni Pazar (Indiana University)11/11/2023, 10:15
Motivated by new physics models which lead to final states containing a high multiplicity of bottom and top quarks; we developed a tagging strategy to suppress reducible and non-reducible multi-jet backgrounds. The idea takes advantage of the properties of light parton showers and of the gluon fragmentation into heavy quarks to reject jets that do not originate from a bottom quark. Preliminary...
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Ahmed Youssef (University of Cincinnati)11/11/2023, 10:30
Hadronization, a crucial component of event generation, is traditionally simulated using finely-tuned empirical models. While current phenomenological models have achieved significant success in simulating this process, there remain areas where they fall short in accurately describing the underlying physics. In this talk, I will introduce MLHAD, an alternative approach that supplants the...
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Kaushik Borah11/11/2023, 10:45
The (anti)neutrino-nucleon charged-current elastic scattering cross sections are parametrized by vector and axial form factors at leading order in weak and electromagnetic couplings. On the other hand, radiative corrections in the Standard Model, and potential new physics contributions beyond the Standard Model, can generate additional operators with corresponding invariant amplitudes. We...
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Christina Gao11/11/2023, 11:10
Axions and axion-like particles are well motivated candidates for dark matter (DM) and have a signature two photon vertex. The most sensitive axion DM search is at the gigahertz (GHz) regime. It relies on microwave cavities with high quality factors resonantly converting axion DM to cavity photons in the background of a static magnetic field. However, axion DM mass could span a vast range...
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Prolay Chanda11/11/2023, 11:25
Cosmology may give rise to appreciable populations of both particle dark matter and primordial black holes (PBH) with the combined mass density providing the observationally inferred value $\Omega_{\rm DM}\approx0.26$. Early studies highlighted that scenarios with both particle dark matter and PBH are strongly excluded by $\gamma$-ray limits for particle dark matter with a velocity...
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Dr Shashin Pavaskar11/11/2023, 11:40
We propose anti-ferromagnets as optimal targets to hunt for sub-MeV dark matter with spin-dependent interactions. These materials allow for multi-magnon emission even for very small momentum transfers, and are therefore sensitive to dark matter particles as light as the keV. We use an effective theory to compute the event rates in a simple way. Among the materials studied here, we identify...
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MRUNAL PRASHANT KORWAR11/11/2023, 11:55
For a discrete symmetry that is anomalous under QCD, the domain walls produced
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in the early universe from its spontaneous breaking can naturally annihilate due to QCD
instanton effects. The gravitational waves generated from wall annihilation have their
amplitude and frequency determined by both the discrete symmetry breaking scale and
the QCD scale. The evidence of stochastic... -
Maxim Pospelov11/11/2023, 13:30
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Keisuke Harigaya (University of Chicago)11/11/2023, 14:45
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Isaac Wang11/11/2023, 16:00
Axion-like particles (ALPs) can be naturally lighter than the electroweak scale. We consider an ALP that couples to the Standard Model Higgs to achieve the strong first-order electroweak phase transition. We discuss the two-field dynamics of the phase transition and the associated computation in detail and identify the viable parameter space. The ALP mass can be from the MeV to GeV scale....
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Prudhvi Bhattiprolu (University of Michigan)11/11/2023, 16:15
We study weak isosinglet vectorlike leptons that decay through a small mixing with the tau lepton, for which the discovery and exclusion reaches of the Large Hadron Collider and future proposed hadron colliders are limited. We show how an $e^+ e^-$ collider may act as a discovery machine for these $\tau^{\prime}$ particles, demonstrate that the $\tau^{\prime}$ mass peak can be reconstructed...
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Qiaofeng Liu (Northwestern University)11/11/2023, 16:30
Quantum information science offers a fresh perspective to think about quantum field theory. In this talk, I look at the connection between entanglement and symmetries in low-energy scattering of spin-$\frac{1}{2}$ baryons. The baryons transform as an octet under the $SU(3)$ flavor symmetry and their interactions below the pion threshold are described by contact operators in an effective field...
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Mr Nafis Fuad (Indiana University)11/11/2023, 16:45
Physicists around the world have been trying to detect an extremely rare, but not invalidated by Standard Model, decay process called neutrinoless double beta decay (0vBB) in Ge since the late 1960s. Two recent experiments, Majorana and GERDA, have pushed the frontier by setting the limit of half-life to be ~10^26 years using ~40 kg of 76Ge. This result eventually also puts an upper limit on...
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