Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-04-15
Nucl.Phys. B568 (2000) 3-39
Physics
High Energy Physics
High Energy Physics - Phenomenology
latex file, 48 pages, 24 figures
Scientific paper
10.1016/S0550-3213(00)00195-4
We revisit the effect of the large stop mixing on the decay and production of the lightest SUSY Higgs at the LHC. We stress that whenever the inclusive 2-photon signature is substantially reduced, associated production, $Wh$ and $t\bar t h$, with the subsequent decay of the Higgs into photons is enhanced and becomes an even more important discovery channel. We also point out that these reductions in the inclusive channel do not occur for the smallest Higgs mass where the significance is known to be lowest. We show that in such scenarios the Higgs can be produced in the decay of the heaviest stop. For not too heavy masses of the pseudo-scalar Higgs where the inclusive channel is even further reduced, we show that large stop mixing also allows the production of the pseudo-scalar Higgs through stop decays. These large mixing scenarios therefore offer much better prospects than previously thought. As a by-product we have recalculated stop1-stop1-h production at the LHC and give a first evaluation of stop1-stop1-Z.
Bélanger Guillaume
Boudjema Fawzi
Sridhar K.
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