The Color-Octet Contributions to $P$-wave $B_c$ Meson Hadroproduction

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dc.creatorChang, Chao-Hsi
dc.creatorQiao, Cong-Feng
dc.creatorWang, Jian-Xiong
dc.creatorWu, Xing-Gang
dc.date2005-02-17
dc.date2005-03-13
dc.date.accessioned2026-07-07T10:49:22Z
dc.date.available2026-07-07T10:49:22Z
dc.descriptionThe contributions from the color-octet components $|(c\bar b)_{\bf 8}(^{1}S_{0}) g>$ and $|(c\bar b)_{\bf 8}(^{3}S_{1}) g>$ to the $h_{B_c}$ or $χ_{B_c}^J$ (the $P$-wave $B_c$ meson) hadroproduction are estimated in terms of the complete ${\cal O}(α_s^4)$ calculation. As necessary inputs in the estimate, we take the values of the octet matrix elements according to the NRQCD scaling rules, and as a result, we have found that the contributions to the $P$-wave production may be the same in order of magnitude as those from the color-singlet ones, $|(c\bar b)_{\bf 1}(^{1}P_{1})>$ and $|(c\bar b)_{\bf 1}(^{3}P_{J})>$ ($J=1,2,3$). Especially, our result indicates that the observation of the color-octet contributions to the $P$-wave production in the low transverse momentum region is not very far from the present experimental capability at Tevatron and LHC.
dc.description14 pages, 4 figures (8 eps-files for figures), add references and correct typos
dc.identifierhttps://arxiv.org/abs/hep-ph/0502155
dc.identifierhttp://arxiv.org/abs/hep-ph/0502155
dc.identifierPhys.Rev.D71:074012,2005
dc.identifierdoi:10.1103/PhysRevD.71.074012
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/184193
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Color-Octet Contributions to $P$-wave $B_c$ Meson Hadroproduction
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