LHC soft physics and TMD gluon density at low x

Abstract

We study the unintegrated, or transverse momentum dependent (TMD) gluon distribution obtained from the best description of the LHC data on the inclusive spectra of hadrons produced in the mid-rapidity region and low transverse momenta at starting scale Q0^2 = 1 GeV^2. To extend this gluon density at higher Q^2 we apply the Catani-Ciafoloni-Fiorani-Marchesini (CCFM) evolution equation. The influence of the initial (starting) non-perturbative gluon distribution is studied. The application of the obtained gluon density to the analysis of the ep deep inelastic scattering allows us to get the results which describe reasonably well the H1 and ZEUS data on the longitudinal proton structure function FL(x,Q^2). So, the connection between the soft processes at LHC and small x physics at HERA has been confirmed and extended to a wide kinematical region.

8 pages, 3 figures, 1 table

References in corpus (6)

• Universality of Unintegrated Gluon Distributions at small x
• Single Inclusive Hadron Production at RHIC and the LHC from the Color Glass Condensate
• Sudakov Double Logarithms Resummation in Hard Processes in Small-x Saturation Formalism
• Transition between soft physics at LHC and low-x physics at HERA
• Universal Suppression of Heavy Quarkonium Production in pA Collisions at Low Transverse Momentum
• TMD factorization and the gluon distribution in high energy QCD

Cited by in corpus (11)

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• Towards the global fit of the TMD gluon density in the proton from the LHC data
• Self-consistent analysis of hadron production in $pp$ and $AA$ collisions at mid-rapidity
• Employing RHIC and LHC data to determine TMD gluon density in a proton
• Self-similarity of hadron production in p-p and A-A collisions at high energies
• Significance of non-perturbative input to TMD gluon density for hard processes at LHC
• Ratio of cross-sections of kaons to pions produced in $pp$ collisions as a function of $\sqrt{s}$
• Ratio of kaon-to-pion production cross-sections in $BeBe$ collisions as a function of $\sqrt{s}$
• Unintegrated gluon distributions for forward jets at LHC
• Novel Heavy-Quark Physics Phenomena