NNV section for (astro)particle physics fall meeting

Session

Parallel Sessions (I)

3 Nov 2023, 11:45

de Werelt (Lunteren)

Conveners

Parallel Sessions (I): Session 1B - Room Fire 1

• Ivo van Vulpen

Parallel Sessions (I): Session 1A - Room Air

• Maria Haney

Parallel Sessions (I): Session 1C - Room Fire 2

• Maria Domenica Galati (Van Swinderen Institute, University of Groningen)

20. Measurement of jet quenching cone-size dependence in pp and Pb–Pb collisions with ALICE

Christos Pliatskas Stylianidis

03/11/2023, 11:45

Heavy ion collisions serve as an excellent testing ground to study the strong interaction, described by quantum chromodynamics, under extremely high temperatures. In that environment, a short-lived medium of deconfined matter, called the quark-gluon plasma (QGP), is formed. A hard scattering between partons from the incident nuclei can result in the production of highly energetic partons that...

21. Optimization of HLT2 selection algorithms at the LHCb experiment

Daniel Magdalinski (NIKHEF)

03/11/2023, 11:45

The computational challenge posed by Large Hadron Collider(LHC) experiments is a formidable one, and with the advent of the High-Luminosity LHC upgrade, there is an increasing demand for efficient utilization of computational resources. The High-Level Trigger 2(HLT2) at the LHCb experiment is the CPU-based second step of the trigger chain that selects physics objects at offline-quality for...

4. Top of the ALPs

Anh Vu Phan (Radboud University; Nikhef)

03/11/2023, 11:45

Axion-like particles (ALPs) are pseudo Goldstone bosons that emerge in the low-energy limit of various extensions of the Standard Model. Concrete ALP models include the axion proposed to solve the strong CP problem and can provide a portal to dark matter. In this talk, we focus on searches for ALPs using top quark measurements at the LHC. Since the ALP couples more strongly to heavier...

19. Measurement of 214-Bi beta spectrum in XENONnT

Carlo Fuselli (DM group)

03/11/2023, 12:05

The XENONnT experiment, situated at the INFN Laboratori Nazionali del Gran Sasso, is a dark matter direct detection experiment with a target of 5.9 tonnes of instrumented liquid xenon. While its primary goal is detecting the faint signals from dark matter particle interactions, it also enables the measurement of high-energy events originating from background radioactive isotopes, including...

22. Search for the sources of ultra-high-energy cosmic rays

Teresa Bister

03/11/2023, 12:05

The arrival directions of ultra-high-energy cosmic rays, with energies above 8 EeV, reveal a dipolar structure pointing away from the center of our Galaxy, thus indicating an extragalactic origin of cosmic rays at the highest energies. In this contribution, it will be demonstrated that the observations can be explained by assuming that the sources follow the large scale structure of the...

15. The Chiral Magnetic Effect in isobaric nuclei at LHC energies

Jasper Westbroek

03/11/2023, 12:05

Global P and CP invariances seem to be preserved in the strong interaction. However, it is possible to violate locally P and CP invariances due to the chiral anomaly in Quantum ChromoDynamics (QCD), which creates an imbalance in chirality. Heavy ion collisions provide an environment in which this local P and CP violation is expected to create a measurable effect. Under the presence of the...