OCHA-PP-140 HEAVY HIGGS PRODUCTIONS AT γγ COLLIDERS a

OCHA-PP-140 HEAVY HIGGS PRODUCTIONS AT γγ COLLIDERS a

Associated production of Intermediate Higgs or Z - boson with tt̄ pair in γγ collision

Associated production of Intermediate Higgs or Z-boson with t ¯ t pair in γγ collision ABSTRACT Photon-photon linear colliders can be realized by laser back-scattering technique on the next generation linear e + e − colliders. Here the associated productions of an intermediate mass Higgs (IMH) or Z-boson with t ¯ t pair in γγ collisions are studied. Since IMH is very unlikely to decay into t ¯ ...

Detection of the heavy Higgs boson at γγ colliders

We consider the possibility of detecting a heavy Higgs boson (m H > 2m Z) in proposed γγ colliders through the semi-leptonic mode γγ → H → ZZ → q ¯ qℓ + ℓ −. We show that due to the non-monochromatic nature of the photon beams produced by the laser-backscattering method, the resultant cross section for Higgs production is much smaller than the on-resonance cross section and generally decreases ...

Heavy charged Higgs boson production at next generation γγ colliders

We investigate the scope of all relevant production modes of charged Higgs bosons in the MSSM, with mass larger than the one of the top quark, at future Linear Colliders operating in γγ mode at the TeV energy scale. Final states with one or two H bosons are considered, as produced by both treeand loop-level interactions.

Production of MSSM Higgs Bosons at Future γγ Colliders

Future γγ colliders allow the production of the heavy neutral MSSM Higgs bosons H and A as single resonances. The prospects of finding these particles in the bb̄ and the neutralino-pair final states have been analysed. The H,A bosons can be discovered for medium values of tanβ with masses up to 70–80% of the initial ee c.m. energy. This production mode thus covers parts of the supersymmetric par...