Abstract
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 language | English (US) |
|---|---|
| Pages (from-to) | 4098-4104 |
| Number of pages | 7 |
| Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |
| Volume | 55 |
| Issue number | 7 |
| DOIs | |
| State | Published - 1997 |
| Externally published | Yes |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)