Addendum to "Distinguishing Spins in Decay Chains at the Large Hadron Collider"
Abstract
We extend our earlier study of spin correlations in the decay chain $D\to C q$, $C\to B l^{near}$, $B\to A l^{far}$, where $A,B,C,D$ are new particles with known masses but undetermined spins, $l^{near}$ and $l^{far}$ are oppositesign sameflavour charged leptons and $A$ is invisible. Instead of looking at the observable 2 and 3particle invariant mass distributions separately, we compare the full threedimensional phase space distributions for all possible spin assignments of the new particles, and show that this enhances their distinguishability using a quantitative measure known as the KullbackLeibler distance.
 Publication:

arXiv eprints
 Pub Date:
 June 2006
 arXiv:
 arXiv:hepph/0606212
 Bibcode:
 2006hep.ph....6212A
 Keywords:

 High Energy Physics  Phenomenology
 EPrint:
 5 pages, no figures