University of Cambridge > > HEP phenomenology joint Cavendish-DAMTP seminar > Lorentz and permutation invariants of particles

Lorentz and permutation invariants of particles

Add to your list(s) Download to your calendar using vCal

If you have a question about this talk, please contact Joseph Davighi.

A theorem of Weyl tells us that the Lorentz (and parity) invariant polynomials in the momenta of n particles are generated by the dot products. We extend this result to include the action of an arbitrary permutation group P ⊂ Sn on the particles, to take account of the quantum-field-theoretic fact that particles can be indistinguishable. Doing so provides a convenient set of variables for describing scattering processes involving identical particles, such as pp → jjj, for which we provide an explicit set of Lorentz and permutation invariant generators. We also address the issues of redundancies among the generators, such as those that arise when n exceeds the spacetime dimension.

This talk is part of the HEP phenomenology joint Cavendish-DAMTP seminar series.

Tell a friend about this talk:

This talk is included in these lists:

Note that ex-directory lists are not shown.


© 2006-2024, University of Cambridge. Contact Us | Help and Documentation | Privacy and Publicity