By Marc Christopher Thomas
This thesis stories collider phenomenology of physics past the traditional version on the huge Hadron Collider (LHC). It additionally explores intimately complicated issues regarding Higgs boson and supersymmetry – the most fascinating and well-motivated streams in particle physics. specifically, it reveals a truly huge enhancement of a number of Higgs boson construction in vector-boson scattering whilst Higgs couplings to gauge bosons range from these envisioned by means of the traditional version. The thesis demonstrates that as a result of lack of unitarity, the very huge enhancement for triple Higgs boson creation happens. this can be a actually novel finding.
The thesis additionally reviews the consequences of supersymmetric companions of best and backside quarks at the Higgs construction and rot on the LHC, pointing for the 1st time to non-universal adjustments for 2 major construction tactics of the Higgs boson on the LHC–vector boson fusion and gluon–gluon fusion.
Continuing the exploration of Higgs boson and supersymmetry on the LHC, the thesis extends latest experimental research and exhibits that for a unmarried decay channel the mass of the pinnacle quark superpartner under a hundred seventy five GeV might be thoroughly excluded, which in flip excludes electroweak baryogenesis within the minimum Supersymmetric version. it is a significant new discovering for the HEP community.
This thesis is especially in actual fact written and the advent and conclusions are obtainable to a large spectrum of readers.
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Additional resources for Beyond Standard Model Collider Phenomenology of Higgs Physics and Supersymmetry
Phys. Commun. 180, 431–454 (2009) 28. A. Belyaev, P. Hamers, and M. Thomas, Triple Higgs production at a 100 TeV collider as a measurement of anomolous Higgs couplings to weak bosons, Upcoming 29. -J. , LHC signatures of new Gauge bosons in minimal Higgsless model. Phys. Rev. 1 Motivation The discovery of the Higgs boson at the LHC [1, 2] has ushered in a new era in the study of the electroweak symmetry breaking (EWSB) sector. Since the longitudinal polarisations of the electroweak gauge bosons (VL ’s, V = W ± , Z) have their origin in EWSB, determining their interactions is of fundamental importance to unravel the mechanism of EWSB.
3 Cross section for triple Higgs production pp → jjhhh with VBF cuts as a function of the anomalous coupling a for LHC14 (dark lines) and LHC33 (light lines). Solid lines are for other parameters fixed to SM values and dashed lines are for parameters given by MCHM4 relations (Eq. 5 for pp → jjW + W − , leading to an small increase in cross section for anomalous coupling instead of a reduction in the more inclusive case. For pp → jjW + W − h this does not occur, presumably as the overall increase in the longitudinal scattering was too small.
The different channels are: (π 0 π 0 , π + π − ) → π + π − π + π − (dashed line), (π 0 π 0 , π + π − ) → π + π − h (thick solid line), (π 0 π 0 , π + π − ) → hhh (dotted line), and (π 0 π 0 , π + π − ) → π + π − (thin solid line) for comparison. The notation (π 0 π 0 , π + π − ) indicates that both π 0 π 0 and π + π − initial states were taken into account model effects in the √ MCHM4 by altering the other parameters according to Eq. 13 along with d3 = 1 − ξ . 9. The largest increases are observed for triple Higgs production.