Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

A Proton anti-proton pair and CP eigenstate

  1. Oct 15, 2017 #1
    [itex]p\bar{p}[/itex] pair is a CP eigenstate?

    As [itex]p[/itex] and [itex]\bar{p}[/itex] are fermions (the pair is assumed to be at S-state), the pair seems to be C's eigenstate with eigenvalue of -1.

    As they have opposite intrinsic parity, the pair state seems to be P's eigenstate with eigenvalue -1. Then isn't it CP eigenstate with eigenvalue of 1?

    But why the [itex]p[/itex][itex]\bar{p}[/itex] pair cannot produce [itex]K_S[/itex] or [itex]K_L[/itex] but only [itex]\bar{K}^0[/itex]?
     
    Last edited: Oct 15, 2017
  2. jcsd
  3. Oct 16, 2017 #2

    Vanadium 50

    User Avatar
    Staff Emeritus
    Science Advisor
    Education Advisor

    Not necessarily. The rest of the message assumes this, so there's no point in commenting on it.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Proton anti-proton pair and CP eigenstate
  1. Anti proton production (Replies: 4)

Loading...