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Volume 265 - XXIV International Workshop on Deep-Inelastic Scattering and Related Subjects (DIS2016) - WG5: Small x and diffraction
Central Exclusive production at LHCb
R. McNulty
Full text: pdf
Published on: 2016 November 09
Central Exclusive Production (CEP) is a unique process at hadron machines in which
particles are produced via colourless propagators.
LHCb have measured the cross-sections for the CEP of vector mesons,
$J/\psi,\psi(2S),\Upsilon(1S),\Upsilon(2S)$ and $\Upsilon(3S)$, which are photo-produced.
In the double pomeron exchange process, preliminary measurements have been made
of $\chi_{c0},\chi_{c1}, \chi_{c2}$ meson production while the first observations of
the CEP of pairs of charmonia, $J/\psi J/\psi$ and $J/\psi \psi(2S)$, have been made
and limits obtained on the pair production of other charmonia.
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