Higher dimensional proton decay operators.

  1. I am new in this group and yet to know the rules about posting doubts/
    questions. So first of all if anybody helps me with the guidelines
    (which may be some link) to be followed, I will appreciate that.

    Second, my main question is: what is meant by higher dimensional
    proton decay operator? I have seen this term in some titles of papers
    and also in Wikipedia article on proton decay, but I have not found
    any explanation about its meaning. I have not come across such terms
    in my elementary quantum field theory course. In wiki article, qqql/
    (Lambda)^2 is said to be a dimension-6 proton decay operator. I do not
    understand how that is so. can anybody explain?
  2. jcsd
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