Different colors ?

• by ElisabethB moderator

  Do the lines coming from off-center vertices all have to be the same color or can they be in different colors ?

  Thanks

  Els

  Posted November 26, 2014 3:28 PM

• by koranzite scientist

  The colours are added by the computer, but sometimes the computer doesn't see all the tracks. Count all of them, regardless of the colour.

  Posted November 26, 2014 3:42 PM

• by ElisabethB moderator

  Okay, duly noted ! 😄 Tx

  Posted November 26, 2014 3:46 PM

• by Mark_..._a_physicist_of_sorts

  Please can someone give us a list of what the colours of the lines mean? I know it isn't relevant for us, I'm just interested to know and I'd be grateful ... 😃

  Posted December 3, 2014 10:35 PM

• by DZM admin

  Hi Mark! From the FAQs:

  Q: Why are some lines a different colour? - A: Edited: @andy.haas: "The colors indicate when the computer thinks tracks belong to the same vertex. But you should mostly ignore them and count the vertex tracks yourself, no matter the color."

  I think that the green lines do denote something unique... muons, perhaps? But the other colors are otherwise meaningless. Your eyes are better than the computer at finding OCVs!

  Posted December 4, 2014 3:06 PM

• by Mark_..._a_physicist_of_sorts in response to DZM's comment.

  Ah! OK - I'd always assumed they were classified based on charge (direction of bending), energy (curvature) etc. I had been wondering why some e.g. muons weren't bent in the mag field, despite being charged. Maybe the e/m ratio is too low to be affected??

  Posted December 4, 2014 3:57 PM

• by Mark_..._a_physicist_of_sorts

  p.s. nice to know we're still better at some things, despite what Hawkins may fear 😃

  Posted December 4, 2014 3:59 PM

• by andy.haas scientist in response to Mark ... a physicist of sorts's comment.

  The muons do bend, but the ones here are quite high energy, so they bend very little.

  Posted December 4, 2014 5:02 PM