Bubble chamber tracks?

[astropaz]

Hi all,

Firstly I'm sorry if this is in the wrong section I wasn't sure where to ask this.

Last night while watching Horizon's "How small is the Universe?" documentary on the BBC there was a brief segment in which they talked with a scientist who showed them the bubble chamber tracks of the potential Higgs particle and I was curious if an image of this track is out there.
Not only that they highlighted the other particles in the picture, I would love if anybody could point me to that picture if they know what I am talking about and it would be a bonus if all the particles could be identified.
It wouldn't need to be the original b&w chart but I do think they have a certain aesthetic to them that a 3D computer model doesn't.

I guess I can always wait until the show hit's youtube and get a screen grab if needed.

I suppose this brings me to my next question, is there an official gallery of Bubble Chamber Tracks somewhere and is there a kind of easy to understand(I'm prepared for "easy to understand" to not exist) chart to aid in what one is looking at on the tracks.

Finally this picture http://www.khadley.com/courses/astro...es/Slide63.jpg seems to be the most common when I am searching, does anybody know the original black & white chart it came from?

So yeah, sorry for the odd questions it's just my curiosity has been piqued.

Thanks in advance.

Paz.

[astropaz]

OK, I have got a screen grab of the picture I mean, the show had inverted it and highlighted various particles with colour.
The "Higgs" is in the middle up the top in blue.

Where can I find the complete picture.

I have also found this site which may help.
http://teachers.web.cern.ch/teachers...site/index.htm

[Cougar]

Last night while watching Horizon's "How small is the Universe?" documentary on the BBC there was a brief segment in which they talked with a scientist who showed them the bubble chamber tracks of the potential Higgs particle and I was curious if an image of this track is out there.

Well, first of all, that's not a bubble chamber track. The article you linked to even said:

...most of the particles that the physicists will pick up in their modern electronic detectors will be ones first identified in bubble chambers and their precursors, cloud chambers and photographic emulsions.

I'm not sure what to make of the picture of the potential Higgs you've provided. It's not like they get one such track and say, "There's the Higgs." They have to get billions and billions of tracks, and from those they find a few tracks where the results don't exactly add up to what's expected. The slight difference could possibly signify the Higgs... or something else. It's far, far more complicated than looking at one track and proclaiming "There it is."

[ShinAce]

Indeed, there will be no bubble chamber images of the Higgs.

However, you can always browse the google images for bubble chamber and print one that you like. To figure out which particle is which, I'd imagine you would need to know the scale and the direction of the magnetic field(to differentiate charge). Then, with an erasable marker, a ruler, and a calculator, you could identify the particles(assuming you already know their masses). This is not something I would do for fun.

This looks like a good page to browse:
http://teachers.web.cern.ch/teachers...ech/guide.html

[Jeff Root]

Does the Higgs particle actually make any kind of track in
any detector? If so, how long could it be?

-- Jeff, in Minneapolis

[ShinAce]

Take the mean lifetime of the Higgs: 1.56×10⁻²² s
and the speed of light: 300 000 000 m/s

And you can guess that distance = speed * time = 300 000 000 m/s * 1.56×10⁻²² s = 0.0000000000000468 meters

That's maybe 9 times the radius of the hydrogen atom.

[Jens]

I'm not sure what to make of the picture of the potential Higgs you've provided.

I could be wrong, but I think probably that's just an artistic illustration.

[trinitree88]

Indeed, there will be no bubble chamber images of the Higgs.

However, you can always browse the google images for bubble chamber and print one that you like. To figure out which particle is which, I'd imagine you would need to know the scale and the direction of the magnetic field(to differentiate charge). Then, with an erasable marker, a ruler, and a calculator, you could identify the particles(assuming you already know their masses). This is not something I would do for fun.

This looks like a good page to browse:
http://teachers.web.cern.ch/teachers...ech/guide.html

ShinAce. Although the LHC is all electronic, I'm not so sure you can rule out some archival bubble chamber images (Gargamelle) containing potential Higgs....( the image shown looks bubble chamber to me)..., the electronic wire chamber images are generally computer generated sprays of particle tracks, and are smooth, continuous, and without noise. I worked on those briefly @ MIT on the OOPS program. OOPS is Out-Of-Plane-Spectrometer, designed and assembled to be used at CEBAF.
As a lark, when people ask me about the Higgs, I comment that you stand a very remote chance of having a Tev cosmic ray shower make one show up in your glass of ginger ale, or beer, while watching football games. Having said that one evening, and just finishing filling a pilsner with some chilly Molson Golden.....a cosmic ray did appear as I held up the glass. Friends laughed loudly.The paths were pretty straight as viewed, and it disappeared as a distorted stream of rising bubbles in a few seconds.


SEE:http://www.google.com/imgres?q=parti...r:12,s:0,i:113