Charged Higgs Boson Search at the Tevatron Upgrade Using Tau(9)

We explore the prospect of charged Higgs boson search in top quark decay at the Tevatron collider upgrade, taking advantage of the opposite states of $\tau$ polarization resulting from the $H^\pm$ and $W^\pm$ decays. Methods of distinguishing the two contr

Theρmeson line shape factor is

fρ(m2)=(1?4m2π/m2)3/2(37)

which takes account of the P-wave threshold behavior forρ→ππdecay.For the line shape of the a1meson we shall use the phenomenological parametrisation of Kuhn and Santamaria[15]

f a(m2)=1.623+10.38

m4

+

0.65

ΓππdΓ(ρ±L→π±π0)

2

cos2θ′?3

ΓππdΓ(ρ±T→π±π0)

4

sin2θ′?3x′(1?x′)(40) x′= 1+

s

(45)

where we have dropped a constant multiplicative factor in(44),which will not be relevant for our analysis.It will be adequate for our purpose to evaluate the

8

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