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$\eta_c$ production at LHC and indications on the understanding of $J/\psi$ production
We present a complete evaluation for the prompt $\eta_c$ production at the LHC at next-to-leading order in $\alpha_s$ in nonrelativistic QCD. By assuming heavy quark spin symmetry, the study of $\eta_c$ production results in a very strong constraint on the upper bound of the color-octet long distanc...
| Autores principales: | , , , , |
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| Lenguaje: | eng |
| Publicado: |
2014
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.114.092005 http://cds.cern.ch/record/1972272 |