Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I have a question regarding the CP operator on pion systems.

1) CP [itex] \mid \pi^0 \rangle [/itex]

2) CP [itex] \mid \pi^+ \pi^- \rangle [/itex]

3) CP [itex] \mid \pi^0 \pi^0 \rangle [/itex]

I'd like to solve this in the above ket notation and apply the operators as is on the different parts of the represented wave function. My solution for 2) is:

CP [itex] \mid \pi^+ \pi^- \rangle [/itex]

[itex] = C \mid \pi^- \pi^+ \rangle [/itex] (switch pions physically in e.g. x-coordinate)

[itex] = \mid \pi^+ \pi^- \rangle [/itex] (invert charges)

Thus CP is +1 for [itex] \mid \pi^+ \pi^- \rangle [/itex]. This does not seem to work for 1). Note I have somehow lost the notion of [itex] (-)^l [/itex] that should be present somewhere :S

Any help is appreciated.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# CP on pion (combinations)

**Physics Forums | Science Articles, Homework Help, Discussion**