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@ARTICLE{Acharya:364000,
      author       = {Acharya, Shreyasi and others},
      title        = {{M}ultiplicity-dependent jet modification from di-hadron
                      correlations in pp collisions at $ \sqrt{s} $ = 13 {T}e{V}},
      journal      = {Journal of high energy physics},
      volume       = {03},
      number       = {3},
      issn         = {1126-6708},
      address      = {Heidelberg},
      publisher    = {Springer},
      reportid     = {GSI-2026-00202, arXiv:2409.04501. CERN-EP-2024-229},
      pages        = {194},
      year         = {2025},
      note         = {This article is distributed under the terms of the Creative
                      Commons Attribution License (CC-BY 4.0). Article funded by
                      SCOAP3.},
      abstract     = {Short-range correlations between charged particles are
                      studied via two-particle angular correlations in pp
                      collisions at $ \sqrt{s} $ = 13 TeV. The correlation
                      functions are measured as a function of the relative
                      azimuthal angle $∆{φ}$ and the pseudorapidity separation
                      $∆η$ for pairs of primary charged particles within the
                      pseudorapidity interval $|η|$ < 0.9 and the
                      transverse-momentum range 1 < p$_{T}$< 8 GeV/c. Near-side
                      ($|∆φ|$ < 1.3) peak widths are extracted from a
                      generalised Gaussian fitted over the correlations in full
                      pseudorapidity separation ($|∆η|$< 1.8), while the
                      per-trigger associated near-side yields are extracted for
                      the short-range correlations ($|∆η|$ < 1.3). Both are
                      evaluated as a function of charged-particle multiplicity
                      obtained by two different event activity estimators. The
                      width of the near-side peak decreases with increasing
                      multiplicity, and this trend is reproduced qualitatively by
                      the Monte Carlo event generators PYTHIA 8, AMPT, and EPOS.
                      However, the models overestimate the width in the low
                      transverse-momentum region (p$_{T}$< 3 GeV/c). The
                      per-trigger associated near-side yield increases with
                      increasing multiplicity. Although this trend is also
                      captured qualitatively by the considered event generators,
                      the yield is mostly overestimated by the models in the
                      considered kinematic range. The measurement of the shape and
                      yield of the short-range correlation peak can help us
                      understand the interplay between jet fragmentation and event
                      activity, quantify the narrowing trend of the near-side peak
                      as a function of transverse momentum and multiplicity
                      selections in pp collisions, and search for final-state jet
                      modification in small collision systems.},
      keywords     = {Hadron-Hadron Scattering (autogen) / Particle Correlations
                      and Fluctuations (autogen) / QCD (autogen)},
      cin          = {ALI / DTL / CIT / EXM / ALICE@CERN},
      ddc          = {530},
      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) / STRONG-2020 - The strong
                      interaction at the frontier of knowledge: fundamental
                      research and applications (824093)},
      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 / G:(EU-Grant)824093},
      experiment   = {EXP:(DE-H253)LHC-Exp-ALICE-20150101},
      typ          = {PUB:(DE-HGF)16},
      eprint       = {2409.04501},
      howpublished = {arXiv:2409.04501},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2409.04501;\%\%$},
      UT           = {WOS:001489942100001},
      doi          = {10.1007/JHEP03(2025)194},
      url          = {https://repository.gsi.de/record/364000},
}