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Träfflista för sökning "WFRF:(Nemchik Jan) srt2:(2017)"

Search: WFRF:(Nemchik Jan) > (2017)

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1.
  • Goncalves, Victor P., et al. (author)
  • Heavy flavor production in high-energy pp collisions : Color dipole description
  • 2017
  • In: Physical Review D - Particles, Fields, Gravitation and Cosmology. - 2470-0010. ; 96:1
  • Journal article (peer-reviewed)abstract
    • We present a detailed study of open heavy flavor production in high-energy pp collisions at the LHC in the color dipole framework. The transverse momentum distributions of produced b-jets, accounting for the jet energy loss, as well as produced open charm D and bottom B mesons in distinct rapidity intervals relevant for LHC measurements are computed. The dipole model results for the differential b-jet production cross section are compared to the recent ATLAS and CMS data while the results for D and B mesons production cross sections - to the corresponding LHCb data. Several models for the phenomenological dipole cross section have been employed to estimate theoretical uncertainties of the dipole model predictions. We demonstrate that the primordial transverse momentum distribution of the projectile gluon significantly affects the meson spectra at low transverse momenta and contributes to the largest uncertainty of the dipole model predictions.
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2.
  • Krelina, Michal, et al. (author)
  • Study of Drell-Yan pair production on nuclear targets
  • 2017
  • In: Journal of Physics: Conference Series. - : IOP Publishing. - 1742-6588 .- 1742-6596. ; 832:1
  • Journal article (peer-reviewed)abstract
    • Drell-Yan pair production off nuclei is an ideal tool to test the cold nuclear effects occurring before a hard collision since no interaction in the final state is expected, neither energy loss or absorption. We present for the first time a comprehensive study of the nucleus-to-nucleon production ratio (the nuclear modification factor) within the color dipole approach using the Green function formalism which naturally incorporates for the color transparency and quantum coherence effects. We study a different onset of nuclear shadowing in various kinematical regions. At large values of the Feynman variable xF and dilepton invariant mass M we include also a suppression factor due to restrictions caused by the energy conservation induced by multiple initial state interactions (ISI effects). We present a variety of predictions for the nuclear suppression as a function of xF and M that can be verified by experiments at RHIC and LHC. The mixing of coherence effects with ISI effects can be eliminated going to large values of the dilepton invariant mass. Then predictions for the nuclear suppression is a direct manifestation for the onset of net ISI effects that can be verified by the future measurements.
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  • Result 1-2 of 2
Type of publication
journal article (2)
Type of content
peer-reviewed (2)
Author/Editor
Pasechnik, Roman (2)
Goncalves, Victor P. (2)
Nemchik, Jan (2)
Krelina, Michal (1)
Kopeliovich, Boris (1)
Potashnikova, Irina (1)
University
Lund University (2)
Language
English (2)
Research subject (UKÄ/SCB)
Natural sciences (2)
Year
2017 (2)Undo refine

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