Beta

Slashdot: News for Nerds

×

Welcome to the Slashdot Beta site -- learn more here. Use the link in the footer or click here to return to the Classic version of Slashdot.

Thank you!

Before you choose to head back to the Classic look of the site, we'd appreciate it if you share your thoughts on the Beta; your feedback is what drives our ongoing development.

Beta is different and we value you taking the time to try it out. Please take a look at the changes we've made in Beta and  learn more about it. Thanks for reading, and for making the site better!

Comments

top

Tiny Particle With No Charge Discovered

spiro_killglance Re:This is a big deal (280 comments)

Not sure which particle your were thinking of but the axion was supposed to be really light, in the eV range, its the gravitino
that is in the plancks (need a atom smasher as big as the solar system) mass range. String theory does have axions in it as well
as stacks of light neutral particles called moduli. The article didn't say how they knew or why they thought that particle was an
axion. The experiment found at light neutral particle with mass ~19 Mev (or maybe 7 Mev) that decays to electron positron pairs, they didn't say the had a spin measurement, if its not spin 0 with negative parity its definitely not an axion. Another experiment (PVLAS) last year found evidence a particle with mass in the milliEv range, that fits more with an axion. So maybe this is something
else.

more than 7 years ago

Submissions

spiro_killglance hasn't submitted any stories.

Journals

spiro_killglance has no journal entries.

Slashdot Account

Need an Account?

Forgot your password?

Don't worry, we never post anything without your permission.

Submission Text Formatting Tips

We support a small subset of HTML, namely these tags:

  • b
  • i
  • p
  • br
  • a
  • ol
  • ul
  • li
  • dl
  • dt
  • dd
  • em
  • strong
  • tt
  • blockquote
  • div
  • quote
  • ecode

"ecode" can be used for code snippets, for example:

<ecode>    while(1) { do_something(); } </ecode>
Create a Slashdot Account

Loading...