$Υ$ decay to two-charm quark jets as a Probe of the Color Octet Mechanism
| dc.creator | Zhang, Yu-Jie | |
| dc.creator | Chao, Kuang-Ta | |
| dc.date | 2008-08-21 | |
| dc.date | 2008-11-04 | |
| dc.date.accessioned | 2026-07-07T12:44:45Z | |
| dc.date.available | 2026-07-07T12:44:45Z | |
| dc.description | We calculate the decay rate of bottomonium to two-charm quark jets $Υ\to c \bar c$ at the tree level and one-loop level including color-singlet and color-octet $b \bar b$ annihilations. We find that the short distance coefficient of the color-octet piece is much larger than the color-singlet piece, and that the QCD correction will change the endpoint behavior of the charm quark jet. The color-singlet piece is strongly affected by the one-loop QCD correction. In contrast, the QCD correction to the color-octet piece is weak. Once the experiment can measure the branching ratio and energy distribution of the two-charm quark jets in the $Υ$ decay, the result can be used to test the color octet mechanism or give a strong constraint on the color-octet matrix elements. | |
| dc.description | Accepted for publication in Phys. Rev. D, Appendices added | |
| dc.identifier | https://arxiv.org/abs/0808.2985 | |
| dc.identifier | http://arxiv.org/abs/0808.2985 | |
| dc.identifier | Phys.Rev.D78:094017,2008 | |
| dc.identifier | doi:10.1103/PhysRevD.78.094017 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/220877 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.subject | Astrophysics | |
| dc.subject | High Energy Physics - Experiment | |
| dc.title | $Υ$ decay to two-charm quark jets as a Probe of the Color Octet Mechanism | |
| dc.type | text |