ELFT HÍRADÓ

[Kormányos Andor <andor.kormanyos AT ttk.elte.hu>]

ELTE TTK Fizikai Intézet / ELTE Institute of Physics

ORTVAY KOLLOKVIUM / ORTVAY COLLOQUIUM
(https://physics.elte.hu/ortvayseminar)

Thursday, 24th September  2026, 15:00h.
Pócza Jenő Lecture Hall, Physics Building 1.71
Pázmány Péter sétány 1/A, 1117 Budapest


Christoph Schwanda
Marietta Blau Institute, AAS, Austria

The Belle II Experiment at the SuperKEKB Collider: Exploring Physics Beyond 
the Standard Model with Precision

Ordinary matter constitutes only about 5% of the universe's energy content, 
leaving the nature of the remaining 95% unexplained by the Standard Model of 
particle physics. This cosmological evidence stands in stark contrast to 
experimental results from particle collider experiments, where all observed 
phenomena are consistently described within the Standard Model framework. 
This dichotomy presents a profound challenge for modern particle physics, and 
precision frontier experiments may hold the key to resolving it. 
Historically, evidence for new particles—such as the charm quark, the top 
quark, or the Higgs boson—has first emerged in precision data before being 
confirmed through direct production in high-energy collisions.
In this talk, I will provide an overview of the Belle II experiment at the 
SuperKEKB collider, highlighting its current status, the challenges it faces, 
and the ways in which the decays of B and D mesons can shed light on physics 
at higher energy scales. I will also discuss the planned upgrade for 2032/33 
and explore how innovative experimental approaches will further extend the 
experiment's capabilities.

Andor Kormányos
coordinator