# Higgs particle is 'found'

1. Jul 2, 2012

### Maui

God particle is 'found': Scientists at Cern expected to announce on Wednesday Higgs boson particle has been discovered

Scientists 'will say they are 99.99% certain' the particle has been found
Leading physicists have been invited to event - sparking speculation that Higgs boson particle has been found
'God Particle' gives particles that make up atoms their mass

http://www.dailymail.co.uk/sciencet...iggs-boson-particle-discovered-Wednesday.html

2. Jul 2, 2012

### QuantumJon

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Oh damn. Something is about to go down. Hopefully, they have yet to discover the Higgs. I want to work at ATLAS! :-/

3. Jul 3, 2012

4. Jul 3, 2012

### mps

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

there'll be other things to discover; you'll still get to work at ATLAS :)

5. Jul 3, 2012

6. Jul 3, 2012

### schaefera

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

How big a result would finding the Higgs be? It seems like a lot of speculation would have made it a very likely find, just a matter of getting enough data.

7. Jul 3, 2012

### arildno

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

We will then have gained scientific proof that humans are material beings.
That is something to be celebrated!

8. Jul 3, 2012

### PAllen

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Depending on whose analysis you believe, 125 gig Higgs favors a supersymmetric extension of the standard model over a vanilla standard model. Based masses of top quark, and W boson, standard model would prefer Higgs over 130 gig (according to some).

9. Jul 3, 2012

### tom.stoer

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

If they have already found it, why should they wait another day to announce that they will find it?

10. Jul 3, 2012

### Astronuc

Staff Emeritus
Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

I saw a number of 122 GeV/c2 today. I'm not sure of the validity. Lot's of rumors/guesses/speculations on the part of outsiders are flying across the internet.

So let's wait for the announcement later this evening or morning or afternoon in Australia/NZ.

11. Jul 3, 2012

### Hans de Vries

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Transcription of the first few minutes of the video which was temporarily accessible online:

http://blogs.telegraph.co.uk/news/t...like-the-higgs-boson-has-been-found-probably/

(The bold is mine)

Hans

Last edited: Jul 3, 2012
12. Jul 3, 2012

### Haelfix

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Whats so fascinating about the Higgs particle, is that it is the first example that we know of what seems to be a fundamental elementary scalar in nature.

The only other examples that we know about, are always arranged (by hand) by some experimentalist somewhere (say in condensed matter).

What's really quite astonishing about the whole thing, is that scalar field theory is quite sick theoretically. It's the first thing you learn about in a course on quantum field theory, but in some sense its the theory that we have the least control over, and in many ways has the most mysterious and drastic consequences for physics. Thus, it is also one of the last things you end up studying as well.

13. Jul 3, 2012

### AnTiFreeze3

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

There was a thread exactly like this that got locked because the mentors wanted to wait until the actual findings were announced to avoid speculation.

14. Jul 4, 2012

### micromass

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Here's live coverage of the press conference, it starts in 20 minutes or so: http://webcast.web.cern.ch/webcast/play_higgs.html [Broken]

Last edited by a moderator: May 6, 2017
15. Jul 4, 2012

### Staff: Mentor

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

CMS presented a 4.9sigma-signal using the 3 sensitive channels.

The H->gamma gamma channel is very convincing (with a significance of 4 sigma), here is the summary plot for this channel:

16. Jul 4, 2012

### micromass

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Result from the conference:
They observed a new boson with mass of 125.3 ± 0.6 GeV at 4.9$\sigma$ significance.

17. Jul 4, 2012

### skydivephil

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Is there any chance this is not the Higgs but something else?

18. Jul 4, 2012

### Staff: Mentor

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

I do not know of any reasonable alternative, and it fits very well to the expectation of the Standard Model Higgs. It could be something else, but I would not expect anything surprising there.

Edit: Here is the corresponding ATLAS plot, giving (local) 4.5 sigma in the H->gamma gamma channel.

Last edited: Jul 4, 2012
19. Jul 4, 2012

### Maui

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

It's BIG. It's confirming the veracity of the Standard Model, which certain circles doubted because of the hypotethical nature of the Higgs(until now).

20. Jul 4, 2012

### Vorde

Re: Higgs particle is 'found': Scientists at CERN expected to announce on Wednesday

Can someone explain to me how they know this particle is a boson?