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| Bachelor Thesis | PUBDB-2017-11201 |
; ;
2017
Hamburg
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Please use a persistent id in citations: doi:10.3204/PUBDB-2017-11201
Abstract: The discovery of the Higgs boson in July 2012 by the ATLAS and CMS collaborations opened new doors for the search for physics beyond the Standard Model. In particular, the presence of new particles and interactions might be deduced indirectly via precision measurements. One way to conduct these precise measurements is with a circular $e^{+}e^-$ -collider. The Future Circular Collider (FCC) design study has made a great effort over the past few years in investigating a promising example of such a collider and its discovery potential. The two most important processes for Higgs production at these colliders are Higgsstrahlung and vector boson fusion. The corresponding cross sections can be measured in the missing energy channel $(\nu\bar{\nu}(H \to b\bar{b}))$. In this work the effect of detector parameters on the precision with which $\sigma_{VBF+HZ}(\sigma_{VBF})$ x $BR(H \to b\bar{b})$ at $\sqrt{s} =$ 240 (350) GeV can be measured in this channel is studied. The ILD, a detector specifically designed for a $e^{+}e^-$-collider, is compared to several variations of the CMS detector and shows an increase in precision ranging from 20-100%. The tracker radius, the tracker efficiency and the energy resolution of the hadronic calorimeter are identified as important parameters for a precise measurement. These results can be helpful for the efficient design of a detector at a future $e^{+}e^-$-collider.
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