Monte Carlo study of particle production in diffractive proton–proton collisions at s=13\sqrt{s} = 13 TeV with the very forward detector combined with central information

Nov 22, 2016
9 pages
Published in:
  • Eur.Phys.J.C 77 (2017) 4, 212
  • Published: Apr 3, 2017
e-Print:

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Abstract: (Springer)
Very forward (VF) detectors in hadron colliders, having unique sensitivity to diffractive processes, can be a powerful tool for studying diffractive dissociation by combining them with central detectors. Several Monte Carlo simulation samples in p–p collisions at s=13\sqrt{s} = 13 TeV were analyzed, and different nondiffractive and diffractive contributions were clarified through differential cross sections of forward neutral particles. Diffraction selection criteria in the VF-triggered-event samples were determined by using the central track information. The corresponding selection applicable in real experiments has \approx 100% purity and 30–70% efficiency. Consequently, the central information enables classification of the forward productions into diffraction and nondiffraction categories, in particular, most of the surviving events from the selection belong to low-mass diffraction events at log10(ξx)<5.5\log _{10}(\xi _{x}) < -5.5 . Therefore, the combined method can uniquely access the low-mass diffraction regime experimentally.
Note:
  • 10 pages, 16 figures, 1tables
  • p p: colliding beams
  • diffraction: dissociation
  • numerical calculations: Monte Carlo
  • p p: scattering
  • differential cross section
  • forward spectrometer
  • pi0: forward production
  • n: forward production
  • photon: forward production
  • neutral particle