Accès ouvert
2023
preprint
OpenAlex
A. Tumasyan, W. Adam, Janik Walter Andrejkovic, Thomas Bergauer et autres
The production of $\Upsilon$(2S) and $\Upsilon$(3S) mesons in lead-lead (PbPb) and proton-proton (pp) collisions is studied in their dimuon decay channel using the CMS detector at the LHC. The $\Upsilon$(3S) meson is observed for the first time in PbPb collisions, with a …
Accès ouvert
2022
preprint
OpenAlex
A. Tumasyan, W. Adam, Janik Walter Andrejkovic, T. Bergauer et autres
Since the discovery of the Higgs boson in 2012, detailed studies of its properties have been ongoing. Besides its mass, its width - related to its lifetime - is an important parameter. One way to determine this quantity is by measuring its …
Accès ouvert
2022
preprint
OpenAlex
A. Tumasyan, W. Adam, Janik Walter Andrejkovic, T. Bergauer et autres
The first search is presented for vector-like leptons (VLLs) in the context of the '4321 model', an ultraviolet-complete model with the potential to explain existing B physics measurements that are in tension with standard model predictions. The analyzed data, corresponding to an …