Hadroproduction of scalar $P$-wave quarkonia in the light-front $k_T$-factorization approach

Abstract

In this work, we present a thorough analysis of scalar $P$-wave ${\chi }_{Q0}$, $Q=c,b$ quarkonia electromagnetic form factors for the ${\gamma }^{\ast }{\gamma }^{\ast }\to {\chi }_{Q0}$ couplings, as well as their hadroproduction observables in $k_{\perp }$-factorisation using the light-front potential approach for the quarkonium wave function. The electromagnetic form factors are presented as functions of photon virtualities. We discuss the role of the Melosh spin-rotation and relativistic corrections estimated by comparing our results with those in the standard nonrelativistic QCD (NRQCD) approach. Theoretical uncertainties of our approach are found by performing the analysis with two different unintegrated gluon densities and with five distinct models of the $Q\bar{Q}$ interaction potentials consistent with the meson spectra. The results for the rapidity and transverse momentum distributions of ${\chi }_{Q0}$ produced in high-energy $pp$ collisions at $\sqrt{s}=13\mathrm{TeV}$ are shown.

arXiv comment14 pages, 15 figures

References in corpus (16)

• Parton distributions in the LHC era: MMHT 2014 PDFs
• Unintegrated parton distributions
• The CCFM Monte Carlo generator CASCADE 2.2.0
• Transverse momentum dependent gluon density from DIS precision data
• NLO prescription for unintegrated parton distributions
• Unintegrated parton distributions and electroweak boson production at hadron colliders
• TMDlib and TMDplotter: library and plotting tools for transverse-momentum-dependent parton distributions
• Photoproduction of Charmonia and Total Charmonium-Proton Cross Sections
• Charmonium Production at High Energy in the k_T-Factorization Approach
• Towards a solution of the charmonium production controversy: k_t-factorization versus color octet mechanism
• Two-photon decay rates of heavy quarkonia in the relativistic quark model
• Theoretical uncertainties in exclusive electroproduction S-wave heavy quarkonia
• Prompt charmonia production and polarization at LHC in the NRQCD with kt-factorization. Part II: ${\chi }_c$ mesons
• Prompt hadroproduction of ${\eta }_c(1S,2S)$ in the $k_T$-factorization approach
• The ${\gamma }^{\ast }{\gamma }^{\ast }\to {\eta }_c(1S,2S)$ transition form factors for spacelike photons
• Gluon distribution at very small x from C-even quarkonia production at the LHC

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