Angular distributions in the radiative decays of the 3D3 state of charmonium originating from polarized p¯p collisions

Cheuk Ping Wong*, Alex W K MOK, Wai Yu Sit

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Using the helicity formalism, we calculate the combined angular distribution function of the two gamma photons ((Formula presented.)(Formula presented.) and (Formula presented.)(Formula presented.)) and the electron ((Formula presented.)e(Formula presented.)-(Formula presented.)) in the triple cascade process (Formula presented.)(Formula presented.), when (Formula presented.)(Formula presented.) and (Formula presented.)(Formula presented.)are arbitrarily polarized. We also derive six different partially integrated angular distribution functions which give the angular distributions of one or two particles in the final state. Our results show that by measuring the two-particle angular distribution of (Formula presented.)(Formula presented.) and (Formula presented.)(Formula presented.)and that of (Formula presented.)(Formula presented.) and(Formula presented.)(Formula presented.), one can determine the relative magnitudes as well as the relative phases of all the helicity amplitudes in the two charmonium radiative transitions (Formula presented.)(Formula presented.) and (Formula presented.)(Formula presented.).

Original languageEnglish
Article number109
Pages (from-to)1-14
Number of pages14
JournalEuropean Physical Journal C
Volume75
Issue number3
DOIs
Publication statusPublished - 2015

Scopus Subject Areas

  • Engineering (miscellaneous)
  • Physics and Astronomy (miscellaneous)

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