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Ivan Nišandžić (IRB)15/10/2026, 09:30
Measurements of semileptonic B decays motivate searches for nonstandard charged-current interactions involving tau leptons. I will discuss a scalar–tensor scenario with right-chiral tau fields, connecting low-energy constraints to the mono-tau signature at the HL-LHC. The tau polarization is reflected in the charged–neutral pion energy sharing in tau decays, providing a possibility to...
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Lovre Pavičić (IJS)15/10/2026, 10:00
We argue that a detailed analysis of semileptonic decays can test the possibility of a massive neutrino. The key observable, related to the forward–backward asymmetry, is exactly zero for a massless neutrino but becomes non-zero if the neutral lepton is heavy and interacts with Standard Model fields via left-handed operators. For right-handed interactions, this quantity differs significantly...
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Nikiša Plešec (Jožef Stefan Institute)15/10/2026, 10:20
Flavor-changing Higgs interactions are highly suppressed in the Standard Model, making them sensitive probes of new physics. I will present Standard Model calculations relevant to their study: box amplitudes for neutral-meson mixing, one-loop flavor-changing Higgs decays, and $B_s\to\mu^+\mu^-$. Particular attention will be given to gauge independence, ultraviolet cancellations, and matching...
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Shaikh Saad (Jožef Stefan Institute)15/10/2026, 11:10
In this talk, I will discuss how AI agents can be constructed for scientific computing, using bsm_agent as a concrete example.
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Rafał Masełek (Jozef Stefan Institute)15/10/2026, 11:40
Anomaly detection offers a way to search for new physics without assuming a specific signal model: instead of designing cuts for a particular scenario, one selects events that look unusual compared with the Standard Model expectation. Two questions arise immediately: how to quantify "unusual," and how to faithfully estimate the Standard Model background among the selected events. In this talk,...
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Patrick Stengel (Jožef Stefan Institute)15/10/2026, 14:00
Mineral detectors represent an emerging particle detection concept that has risen in prominence in recent years due to the advent of modern computational and high-resolution microscopy techniques. Natural and synthetic crystals are capable of retaining microscopic damage features induced by nuclear recoils, which could be then read out with a variety of micrometer and nanometer resolution...
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Janning Meinert (JSI)15/10/2026, 14:30
Neutrino oscillations show that neutrinos are massive, which the Standard Model does not account for. The origin of their tiny masses and their large mixing remains open. This talk explores an approach in which both emerge from the thermodynamics of SU(2) Yang–Mills theory. In this picture, the meV scale of neutrino masses is tied to the temperature of the cosmic microwave background. The...
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Lara Srdojević (FMF)15/10/2026, 15:00
The Type-II seesaw is a minimal extension of the Standard Model in which an electroweak scalar triplet generates Majorana neutrino masses through its vacuum expectation value. This model gives rise to rich collider phenomenology involving charged and neutral scalar states. In this work, we investigate mass spectra with neutral scalars lighter than their charged partners. We map neutral decay...
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Lara Krašovec (IJS)15/10/2026, 15:20
The Type-II Seesaw provides a mechanism for generating non-zero neutrino masses by extending the scalar sector of the Standard model with a complex triplet. The additional scalar states predicted by the model can be probed indirectly through their contributions to rare processes involving the Higgs boson.
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In this talk, we investigate the phenomenological signatures of Type-II Seesaw in the h... -
António Manso (Jožef Stefan Institute)15/10/2026, 16:10
We show that a secondary period of warm inflation (lukewarm inflation) may dilute unwanted relics while enhancing the power spectrum of primordial curvature perturbations on small scales. At temperatures parametrically below the GUT scale, this enhancement is nearly scale-invariant over an exponentially large range of comoving scales, resulting in a stochastic gravitational wave background...
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Eric Lescano (IJS)15/10/2026, 16:40
I will review some advances in the understanding of the gauge-gravity dualities and their applications to constructing higher-derivative corrections to the Einstein-Hilbert Lagrangian. Particular focus will be placed on recent formalisms designed to capture higher-derivative corrections that are related to quantum gravity scenarios, such as the leading-order corrections of non-commutative...
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Satyabrata Datta15/10/2026, 17:10
Stochastic gravitational-wave backgrounds (SGWBs) from early-Universe topological defects offer a potential window into physics beyond the Standard Model. However, detecting a background does not necessarily mean that its underlying physical parameters can be independently reconstructed. This talk explores how spectral features, parameter degeneracies, and astrophysical foregrounds determine...
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Arvind Bhaskar (jozef stefan institute)16/10/2026, 09:30
Quantum information theory (QIT) provides a complementary framework for investigating the properties of quantum states produced in high-energy particle collisions. In this work, we explore the potential of QIT observables to probe physics beyond the Standard Model (BSM) at a future muon collider within the framework of the Standard Model Effective Field Theory (SMEFT). We consider the process...
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45. Which Complex Saddles Count? Lefschetz Thimble Intersection Numbers for Real-Time Path IntegralsKatarina Trailović (IJS)16/10/2026, 10:00
Picard–Lefschetz theory writes oscillatory integrals, such as real-time path integrals, as a sum over Lefschetz thimbles attached to complex saddle points. Each saddle is weighted by an intersection number, and computing these numbers in many dimensions has been a long-standing challenge. I will present a multiple shooting method that finds them reliably, including their signs. I will show it...
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Emanuele Mendicelli (Jožef Stefan Institute)16/10/2026, 10:50
Quantum computers promise to tackle problems that challenge classical machines, such as determining the spectra and real-time dynamics of Hamiltonian systems with large Hilbert spaces, and circumventing the sign problem. After a brief introduction to quantum computing and the limitations of current hardware, we focus on two concrete examples: the energy spectrum of an interacting fermion–boson...
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Luka Jevšenak (University of Ljubljana, Faculty of Mathematics and Physics)16/10/2026, 11:20
The $\rho$ resonance appears as a pole in the two-pion scattering amplitude with quantum numbers $J^{PC}=1^{--}$. Our aim is to determine the properties of the $\rho$ resonance from first principles of quantum chromodynamics using the lattice QCD methodology. On four lattices with lattice spacings ranging from $a=0.114$ fm to $a=0.068$ fm and pion masses ranging from $m_\pi=317$ MeV to...
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Ivan Vujmilovic (Jozef Stefan Institute)16/10/2026, 11:40
In this talk I will present preliminary results from an ongoing study of coupled $DD^* - D^*D^*$ scattering on the lattice. To obtain the finite-volume spectrum of the system we incorporate a variety of scattering interpolators in both channels, in addition to a local diquark-antidiquark operator, whose role in determining the energies of excited states for this system has recently emerged....
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