| Tuesday 10 June 2025 | |
| Events for day: Tuesday 10 June 2025 |
| 11:00 - 12:30 Weekly Seminar Black Holes as Catalysts: The Far-Reaching Effects of Black Hole Retention in Evolution of Star Clusters School ASTRONOMY Massive stars, upon exhausting their thermonuclear fuel, undergo gravitational collapse followed by supernova explosions, leaving behind black holes (BHs) as remnants. These explosions aren't perfectly symmetrical, and the uneven ejection of mass imparts a "natal kick" to the newborn BH. The magnitude of these kicks remains a subject of debate, creating uncertainty about the initial population of BHs retained in star clusters. High natal kicks lead to the immediate ejection of BHs from their host clusters, while gentler kicks allow them to stay put, forming a sub-system of BHs right in the cluster's heart. This BH sub-system (BHSub) acts like ... 11:00 - 12:00 Journal Club: Experiment & Phenomenology – Hybrid Format Search for long-lived particles with the CMS detector at the LHC School PARTICLES AND ACCELERATORS Abstract: Long-lived particles (LLPs) are predicted in a wide range of extensions to the Standard Model, including R-parity violating supersymmetry, gauge-mediated SUSY breaking, exotic Higgs decays, heavy neutral leptons, and other scenarios. These models are often connected to fundamental questions in particle physics, such as naturalness, dark matter, baryogenesis, and the origin of neutrino masses. In this talk, I present recent results from the CMS experiment on searches for LLPs using proton-proton collision data from the LHC. The focus is on advanced techniques for identifying displaced signatures, reducin ... 14:00 - 15:00 Weekly Seminar HEPCo Group Unveiling neutrino physics with early universe probes School PHYSICS Date and time Tuesday, June 10th, 2025 (20 Khordadt), 2:00 pm (Tehran zone) Link https://www.skyroom.online/ch/schoolofphysics/highenergyseminar Abstract After a brief summary of our knowledge of the role of neutrinos in the early universe, we review the most important cosmological observables and discuss how they can help in our understanding of neutrinos and their properties. In particular, we focus on how neutrino properties change the effective number of relativistic species (Neff). Among new physics scenarios, we discuss the case of light ... |