On 9 heinä, 18:25, Tom Roberts wrote:
On 7/9/12 7/9/12 * 1:34 AM, mathematician wrote:

On 7 heinä, 05:50, Tom Roberts wrote:
No. 125 GeV/c^2 is far below the t-t_bar threshold; it is well below the t-quark
mass of 173 GeV/c^2.

Presently unknown
(t,t_bar) mesons are classified with
I = isospin, J = total angular momentun, P = parity and C = C-parity:

J(PC) = 0(-+), 2(-+), 4(-+), ... are called eta_t mesons, I = 0.
J=0 is specially interesting at this time.
Masses of these mesons are unknown at the moment ? * [...]

Yes, their masses are unknown. But as I said before, they must have masses above
2*173 GeV/c^2, which rules them out as the bump at 126 GeV/c^2.

In addition, one would expect such mesons to be produced with a
strong-interaction cross-section, which would be much larger than that observed
for the bump at 126 GeV/c^2. The production cross-section of that bump is
consistent with the SM Higgs (i.e. an electroweak coupling).

Tom Roberts

2*57.68 GeV/c^2 = 115.36 GeV/c^2. Is there some measurements wrong in
your 2*173 GeV/c^2 ?

I would expect m_t = 115 GeV/c^2 - 126 GeV/^2 .

Hannu