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Towards an Optimized Monochromatization for direct Higgs Production in Future Circular e+ e- Colliders
Direct s-channel Higgs production in e+e- collisions is of interest if the centre-of-mass energy spread can be reduced to be comparable to the width of the standard model Higgs boson. A monochromatization principle, previously proposed for several earlier lower-energy colliders, could be employed in...
Autores principales: | , |
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Lenguaje: | eng |
Publicado: |
2017
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.23727/CERN-Proceedings-2017-001.1 http://cds.cern.ch/record/2301993 |
Sumario: | Direct s-channel Higgs production in e+e- collisions is of interest if the centre-of-mass energy spread can be reduced to be comparable to the width of the standard model Higgs boson. A monochromatization principle, previously proposed for several earlier lower-energy colliders, could be employed in order to achieve the desired reduction, by introducing a nonzero horizontal dispersion of opposite sign for the two colliding beams at the interaction point. In high-energy high-luminosity circular colliders, beamstrahlung may increase the energy spread and bunch length. The horizontal emittance blow up due to beamstrahlung, a new effect which was not present in past monochromatization proposals, may degrade the performance, especially the luminosity. We study, for the FCC-ee at 62.5~GeV beam energy, how we can optimize the IP optics parameters, along with the number of particles per bunch so as to obtain maximum luminosity at a desired target value of the collision energy spread. |
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