Radiation hardness of Kapton in a helium atmosphere

• Gian Caratsch (ETH Zurich)

I'll share with you the result of my work performed during my semester thesis at the Mu3e experiment. I irradiated Kapton samples using Str-90 source, which can deliver in a few days a dose comparable to the one received during the first measurement campaign of the Mu3e experiment. Since the behavior of irradiated Kapton in helium atmosphere was unknown and several support structures of the Mu3e detector were built of Kapton, it was a motivated study.

Charged Higgs pair production through vector-boson fusion

• Irina Rusetski (PSI - Paul Scherrer Institut)

Extending the scalar sector – the Higgs sector – of the Standard Model by two or more Higgs doublets always leads to charged Higgs mass eigenstates; conversely, the existence of charged Higgs bosons implies a non-minimal Standard model. This has motivated the search for charged Higgs bosons by both ATLAS and CMS. For my master’s thesis project, I am computing the cross section of the production of two charged Higgs bosons through vector-boson (gauge boson) fusion. To account for corrections at the QCD vertices, we are using the structure function approach defined in terms of the hadronic tensor.