I've been asked to find the ratio between the cross sections of the two folowing decais:(adsbygoogle = window.adsbygoogle || []).push({});

Using the CKM matrix and the feynman diagrams for both decays, I reach the conclusion that the Ratio is exactly 1. However, consulting this document,

http://pdg.lbl.gov/2012/tables/rpp2012-tab-baryons-Lambda.pdf

We clearly see it is not. I do not understand where the problem lies.

My reasoning is the following:

- The decays are exactly the same, except for the final arrangement of the quarks

- Since the vertices are the same, the probability of each interaction is the same in both cases.

- Since the probabilities are the same, the interaction rates are the same.

- Since the mass of the products is roughly equal in both cases, the density of final states is the same

- The cross section is the same.

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

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!

# I Lambda baryon decays

Have something to add?

Draft saved
Draft deleted

Loading...

Similar Threads for Lambda baryon decays |
---|

I Majorana neutrinos, sphaleron reactions, baryon asymmetry |

I Excited hadrons v. fundamental particles |

I Baryon number nonconservation in the early universe |

I Feynman Diagram for Double Charm Baryon |

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