Polarized J/psi production at CLEO
| dc.creator | Baek, Seungwon | |
| dc.creator | Ko, P. | |
| dc.creator | Lee, Jungil | |
| dc.creator | Song, H. S. | |
| dc.date | 1998-04-30 | |
| dc.date.accessioned | 2026-07-07T11:35:28Z | |
| dc.date.available | 2026-07-07T11:35:28Z | |
| dc.description | Polarizations of the prompt $J/ψ$'s produced in the $e^+e^-$ annihilation at CLEO energy ($\sqrt{s} = 10.58$ GeV) are considered in the framework of NRQCD factorization formalism. We find that the $J/ψ$ polarization has strong dependence on the production mechanism. At CLEO energy, the most dominant $J/ψ$ production mechanism in the most phase space is the color-singlet mechanism, $e^+e^- \to J/ψ+gg$, for which $J/ψ$'s are highly longitudinally polarized. On the other hand, the dominant $J/ψ$ production mechanism at the upper end point of $J/ψ$ energy distribution is the color-octet process, $e^+e^- \to (c\bar{c})^{(8)} +g$, for which $J/ψ$'s are almost unpolarized. Thus, the measurement of the polarization of the end point $J/ψ$'s can give another test of color-octet mechanism, and constraint on the NRQCD matrix elements. | |
| dc.description | 12 pages, 4 figures, RevTex, to be published in J. Korean Phys. Soc | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9804455 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9804455 | |
| dc.identifier | J.KoreanPhys.Soc.33:97-101,1998 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/198606 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Polarized J/psi production at CLEO | |
| dc.type | text |