TY  - GEN
Y1  - 2022///
A1  - Schäfer, Ruth
AV  - public
UR  - https://archiv.ub.uni-heidelberg.de/volltextserver/32278/
TI  - New Physics Searches in Flavour Observables
CY  - Heidelberg
KW  - Langlebige Teilchen
KW  -  SMEFT
KW  -  effektive Feldtheorie
N2  - In this thesis, we follow two approaches to explore the space of possible models of physics
beyond the Standard Model, long-lived particle searches and effective field theories,
following the papers I published during my Ph. D. studies. We explore the potential
of long-lived particle searches at the e+ e? colliders Belle II and ILC, comparing their
sensitivities to different other detectors and search methods. We find that these detectors
have a strong sensitivity to these searches. We also explore the possibilities of adding far
detectors to improve their sensitivities and find that realistic far detectors do not offer
a great improvement in sensitivity to the Belle II and ILC detectors. We also compare
the different search strategies of missing energy and displaced vertex searches for an
axion-like particle model at Belle II, finding that both have the potential to explore new
parameter space. While the missing energy search has a broader reach in mass, the
displaced search can reach smaller couplings for heavy masses. We use the effective field
theory approach to explore the flavour structure of UV physics by fitting SMEFT Wilson
coefficients to top and bottom observables. In both approaches, we focus on observables
from flavour physics, specifically B meson decays.
ID  - heidok32278
ER  -