Can the triple-parton scattering be observed in open charm meson production at the LHC?

Abstract

We investigate whether the triple-parton scattering effects can be observed in open charm production in proton-proton collisions at the LHC. We use so-called factorized Ansatz for calculations of hard multiple-parton interactions. The numerical results for each parton interaction are obtained within the $k_T$-factorization approach. Predictions for one, two and three $c\bar{c}$ pairs production are given for $\sqrt{s}=7$ TeV and $\sqrt{s}=13$ TeV. Quite large cross sections, of the order of milibarns, for the triple-parton scattering mechanism are obtained. We suggest a measurement of three $D^0$ mesons or three $\overline{D^0}$ antimesons by the LHCb collaboration. Confronting our results with recent LHCb experimental data for single and double $D^0$ (or $\overline{D^0}$) meson production we present our predictions for triple meson final state: $D^0{D}^0{D}^0$ or $\overline{D^0}\overline{D^0}\overline{D^0}$. We present cross sections for the LHCb fiducial volume as well as distributions for $D^0$ meson transverse momentum and three-$D^0$ meson invariant mass. The predicted visible cross sections, including the detector acceptance, hadronization effects and $c\to D^0$ branching fraction, is of the order of a few nanobarns. The counting rates including $D^0\to K^{-}{\pi }^{+}$ branching fractions are given for known or expected integrated luminosities.

12 pages, 4 figures

References in corpus (10)

• Parton distributions in the LHC era: MMHT 2014 PDFs
• Theoretical considerations on multiparton interactions in QCD
• Triple parton scatterings in high-energy proton-proton collisions
• Conventional versus single-ladder-splitting contributions to double parton scattering production of two quarkonia, two Higgs bosons and $c\bar{c}c\bar{c}$
• Constraining the double gluon distribution by the single gluon distribution
• New mechanisms for double charmed meson production at the LHCb
• Proceedings of the Sixth International Workshop on Multiple Partonic Interactions at the Large Hadron Collider
• Constraining double parton correlations and interferences
• Open charm meson production at BNL RHIC within $k_t$-factorization approach and revision of their semileptonic decays
• Triple parton scattering in collinear approximation of perturbative QCD

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• Double-parton scattering effects in associated production of charm mesons and dijets at the LHC
• QCD predictions for open charm meson production at the LHCb in fixed-target experiment
• Double-parton scattering effects in $D^0{B}^{+}$ and $B^{+}{B}^{+}$ meson-meson pair production in proton-proton collisions at the LHC
• Double heavy quarkonium production in diffractive processes at the Run 2 LHC energy
• Production of forward heavy-flavour dijets at the LHCb within $k_T$-factorization approach
• On sum rules for double and triple parton distribution functions and Pythia's model of multiple parton interactions
• Associated production of $D$-mesons with jets at the LHC