6533b7d3fe1ef96bd125feac

RESEARCH PRODUCT

Production ofψ(2S)mesons inpp¯collisions at 1.96 TeV

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We have measured the differential cross section for the inclusive production of $\ensuremath{\psi}(2\mathrm{S})$ mesons decaying to ${\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}}$ that were produced in prompt or $B$-decay processes from $p\overline{p}$ collisions at 1.96 TeV. These measurements have been made using a data set from an integrated luminosity of $1.1\text{ }\text{ }{\mathrm{fb}}^{\ensuremath{-}1}$ collected by the CDF II detector at Fermilab. For events with transverse momentum ${p}_{T}(\ensuremath{\psi}(2\mathrm{S}))g2\text{ }\text{ }\mathrm{GeV}/c$ and rapidity $|y(\ensuremath{\psi}(2\mathrm{S}))|l0.6$ we measure the integrated inclusive cross section $\ensuremath{\sigma}(p\overline{p}\ensuremath{\rightarrow}\ensuremath{\psi}(2\mathrm{S})X)\ifmmode\cdot\else\textperiodcentered\fi{}\mathrm{Br}(\ensuremath{\psi}(2\mathrm{S})\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}})$ to be $3.29\ifmmode\pm\else\textpm\fi{}0.04(\mathrm{stat})\ifmmode\pm\else\textpm\fi{}0.32(\mathrm{syst})\text{ }\text{ }\mathrm{nb}$.