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Higgs boson pool

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LAN_403

Hon1nbo

Thu Jul 28 2011, 09:50PM

Registered Member #902 Joined: Sun Jul 15 2007, 08:17PM
Location: Pacific Northwest USA
Posts: 1042

I'll put two CM600 bricks down on 121.0 GeV

-Jimmy

Legit_bacon

Wed Aug 03 2011, 06:10AM

Registered Member #4034 Joined: Thu Jul 28 2011, 10:41PM
Location: somewhere in the Southern hemisphere
Posts: 138

Well seing 42 is the ultimate answer to life the universe and everything, and seeing that the probable range is in the hundreds i'll have to say 142.0 GeV

Mads Barnkob

Wed Aug 03 2011, 08:31AM

Registered Member #1403 Joined: Tue Mar 18 2008, 06:05PM
Location: Denmark, Odense C
Posts: 1968

I went out and stared at the sun through binoculars for an hour and came to the conclusion that it must be 139.13 GeV

Sulaiman

Wed Aug 03 2011, 12:30PM

Registered Member #162 Joined: Mon Feb 13 2006, 10:25AM
Location: United Kingdom
Posts: 3141

My guess ..... 141.42135623730950488016887242097 GeV (approx.)

Conundrum

Wed Aug 03 2011, 06:32PM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

Can someone graph these with usernames please? It would make entertaining reading.

Also if possible try to add any theories why you think the Higgs mass is what you think it is.

If possible try and use real world physics, or at least something approximating this.
Quoting Heim/Droscher theory is right out, unless you have compelling peer reviewed evidence to prove it works

M-theory, string theories (any/all), QCD, etc is acceptable.

Also

Regards, -A

hboy007

Thu Aug 04 2011, 08:59AM

Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 374

let's say 800GeV just to make sure it will be "found" AFTER we've got our fusion plants running

Forty

Thu Aug 04 2011, 05:17PM

Registered Member #3888 Joined: Sun May 15 2011, 09:50PM
Location: Erie, PA
Posts: 649

I have no idea what that graph means.

hboy007

Thu Aug 04 2011, 07:27PM

Registered Member #1667 Joined: Sat Aug 30 2008, 09:57PM
Location:
Posts: 374

Forty wrote ...

I have no idea what that graph means.

You'd assume the generation of a real Higgs boson, find the ways in which it can decay (called decay channels) while obeying the rules of physics (conservation laws and symmetries) and look at the amount of debris (decay products) that can be attributed to these channels.

That would give you a quantity called the total or angular resolved cross section. After making a lot of educated guessing to subtract the background (think of it as stray particles and all the decay products you're not interested in), every remaining bump in the cross section corresponds to the decay of a particle.

One particle can cause several bumps depending on whether or not it has an internal structure and can thus have excited states. So for now, we're only trying to find a bump in the amount of decay products as we're scanning through the energy spent on inelastic processes. The colored zones depict ranges where likeliness for exclusion of the existence is within certain intervals. the 2-sigma interval represents 95% certainty that the Higgs is not there for a given energy, or in other words: chances are 1:19. Still there's a 5% chance we're wrong.

The 3-sigma intervals claims a likeliness of 99,7% that said Particle cannot be found here. As to what CL means I can only guess or google. Both is left to the inclined reader for further study (meaning to say I have no idea what the definition is. Edit: see 2nd link for solution)

For further reading one could dare to have a look at

or maybe look at this article, it seems more fun at the first glance:

ps. oh and there's a catch: the higher the energy and the more decay channels are available, the shorter the lifetime of a particle or resonance is. Since the uncertainty relation between lifetime and energy spread (just like the decay line width of optical excitations) imposes severe smearing over the energy range of the cross section, there will be no spike or bell-shaped peak but a rather broad and flat bump that is easily mistaken with an insufficient description of the background. That's why it takes an insane particle flux, high collision rates and a world-wide computing grid to evaluate the results.
What's more, the rates for highly inelastic collisions have the habit of falling off towards higher energies and we're not talking about simply "cranking up the power" here, you'll have to pay in "orders of magnitude" or simply put: in generations of colliders and generations of accelerator technology.

Conundrum

Fri Aug 12 2011, 09:44AM

Registered Member #96 Joined: Thu Feb 09 2006, 05:37PM
Location: CI, Earth
Posts: 4062

The resulting table and graph is intriguing.
If you plot the values and compensate for confirmation bias then the values for the Higgs masses are clustered around 128 GeV.

Maybe we should submit a paper to some science magazine? "Higgs mass determination by Monte Carlo analysis"...

Its not as stupid as it sounds, this sort of analysis has even been used to see through the skin using light, by plotting the path of a random series of photons to compensate for random light diffusion.

Also,

-A

Nah

Fri Aug 12 2011, 03:11PM

Registered Member #3567 Joined: Mon Jan 03 2011, 10:49PM
Location: USA, 1960s
Posts: 260

It is clearly seen that were are men of science, as we all have horrible handwriting.

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