SUSY Higgs at the LHC: Large stop mixing effects and associated production

Citation
G. Belanger et al., SUSY Higgs at the LHC: Large stop mixing effects and associated production, NUCL PHYS B, 568(1-2), 2000, pp. 3-39
Citations number
108
Language
INGLESE
art.tipo
Review
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B
ISSN journal
0550-3213 → ACNP
Volume
568
Issue
1-2
Year of publication
2000
Pages
3 - 39
Database
ISI
SICI code
0550-3213(20000228)568:1-2<3:SHATLL>2.0.ZU;2-8
Abstract
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 inclusiv e two-photon signature is substantially reduced, associated production, Wh and <(tt)over bar>h, with the subsequent decay of the Higgs into photons is enhanced and becomes an even more important discovery channel. We also poi nt out that these reductions in the inclusive channel do not occur for the smallest Higgs masses where the significance is known to be lowest. We show that in such scenarios the Higgs can be produced in the decay of the heavi est stop, For not too heavy masses of the pseudo-scalar Higgs where the inc lusive channel is even further reduced, we show that large stop mixing also allows the production of the pseudo-scalar Higgs through stop decays, Thes e large mixing scenarios therefore offer much better prospects than previou sly thought. As a by-product we have recalculated (t) over tilde(1)(t) over tilde(1)* h production at the LHC and give a first evaluation of the (t) o ver tilde(1)(t) over tilde(1)* Z, (C) 2000 Elsevier Science B.V. All rights reserved.