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@MISC{Collaboration:348444,
      author       = {{ALICE Collaboration}},
      title        = {{U}nderlying-event properties in pp and p$-${P}b collisions
                      at $\sqrt{s_{\rm {NN}}} = 5.02$ {T}e{V}},
      reportid     = {GSI-2024-00280},
      year         = {2022},
      note         = {Journal Article GSI record: GSI-2024-00279},
      abstract     = {This article reports about the properties of the underlying
                      event measured with ALICE at the LHC in pp and p-Pb
                      collisions at $\sqrt{s_{\rm NN}}= 5.02$ TeV. The event
                      activity, quantified by charged-particle number and
                      summed-$p_{\rm T}$ densities, is measured as a function of
                      the leading-particle transverse momentum ($p_{\rm T}^{\rm
                      trig}$). These quantities are studied in three
                      azimuthal-angle regions relative to the leading particle in
                      the event: toward, away, and transverse. Results are
                      presented for three different $p_{\rm T}$ thresholds (0.15,
                      0.5 and 1 GeV/$c$) at mid-pseudorapidity ($|\eta|<0.8$). The
                      event activity in the transverse region, which is the most
                      sensitive to the underlying event, exhibits similar
                      behaviour in both pp and p-Pbcollisions, namely, a steep
                      increase with $p_{\rm T}^{\rm trig}$ for low $p_{\rm T}^{\rm
                      trig}$, followed by a saturation at $p_{\rm T}^{\rm trig}
                      \approx 5 $GeV/$c$. The results from pp collisions are
                      compared with existing measurements at other centre-of-mass
                      energies. The quantities in the toward and away regions are
                      also analyzed after the subtraction of the contribution
                      measured in the transverse region. The remaining jet-like
                      particle densities are consistent in pp and p-Pb collisions
                      for $p_{\rm T}^{\rm trig} > 10$ GeV/$c$, whereas for lower
                      $p_{\rm T}^{\rm trig}$ values the event activity is slightly
                      higher in p-Pb than in pp collisions. The measurements are
                      compared with predictions from the Monte Carlo event
                      generators.},
      cin          = {ALI / DTL / CIT / EXM / ALICE@CERN},
      cid          = {I:(DE-Ds200)ALI-20080822OR105 /
                      I:(DE-Ds200)DTL-20051214OR031 /
                      I:(DE-Ds200)CIT-20110310OR121 /
                      I:(DE-Ds200)EXM-20080818OR100 / I:(DE-Ds200)Coll-CERN-ALICE},
      pnm          = {612 - Cosmic Matter in the Laboratory (POF4-612) / HGS-HIRe
                      - HGS-HIRe for FAIR (HGS-HIRe) / SUC-GSI-Heidelberg -
                      Strategic university cooperation GSI-U Heidelberg
                      (SUC-GSI-HE) / SUC-GSI-Frankfurt - Strategic university
                      cooperation GSI-U Frankfurt/M (SUC-GSI-FR) /
                      SUC-GSI-Darmstadt - Strategic university cooperation GSI-TU
                      Darmstadt (SUC-GSI-DA)},
      pid          = {G:(DE-HGF)POF4-612 / G:(DE-Ds200)HGS-HIRe /
                      G:(DE-Ds200)SUC-GSI-HE / G:(DE-Ds200)SUC-GSI-FR /
                      G:(DE-Ds200)SUC-GSI-DA},
      experiment   = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
      typ          = {PUB:(DE-HGF)32},
      doi          = {10.17182/HEPDATA.133032},
      url          = {https://repository.gsi.de/record/348444},
}