NRQCD matrix elements in polarization of [Formula presented] produced from [Formula presented] decay

Sean Fleming, Oscar F. Hernández, Ivan Maksymyk, Hélène Nadeau

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


We present the nonrelativistic QCD (NRQCD) prediction for the polarization of the [Formula presented] promptly produced in [Formula presented], as well as the helicity-summed production rate. We propose that these observables can be of avail in measuring the three most important color-octet NRQCD matrix elements involved in [Formula presented] production. Anticipating the measurement of the polarization parameter [Formula presented], we determine its expected range given current experimental bounds on the color-octet matrix elements. We find that the leading-order NRQCD prediction for the polarization parameter [Formula presented] is expected to lie in the range [Formula presented] to 0.05 whereas the color-singlet model prediction is [Formula presented].

Original languageEnglish (US)
Pages (from-to)4098-4104
Number of pages7
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number7
StatePublished - 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)


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