Kinematic edges with flavor oscillation and non-zero widths

Yuval Grossman, Mario Martone, Dean J. Robinson

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


Kinematic edges in cascade decays provide a probe of the masses of new particles. In some new physics scenarios the decay chain involves intermediate particles of different flavors that can mix and oscillate. We discuss the implication of such oscillation, and in particular its interplay with the non-zero widths of the particles. We derive explicit formulae for differential decay rates involving both non-zero widths and oscillation, and show that in the case where the mass difference between the intermediate particle is of the order of their widths, both oscillation and width effects are important. An examination of the physical observables contained in these differential decay rates is provided. We calculate differential decay rates for cases in which the intermediate particles are either scalars or fermions.

Original languageEnglish
Article number127
JournalJournal of High Energy Physics
Issue number10
StatePublished - 2011
Externally publishedYes


FundersFunder number
Directorate for Mathematical and Physical Sciences0757868


    • Supersymmetry phenomenology


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