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@ARTICLE{Acharya:348140,
      author       = {Acharya, Shreyasi and others},
      title        = {{D}ata-driven precision determination of the material
                      budget in {ALICE}},
      journal      = {Journal of Instrumentation},
      volume       = {18},
      number       = {11},
      issn         = {1748-0221},
      address      = {London},
      publisher    = {Inst. of Physics},
      reportid     = {GSI-2024-00186, arXiv:2303.15317. CERN-EP-2023-043},
      pages        = {P11032},
      year         = {2023},
      note         = {22 pages, 5 captioned figures, 3 tables, authors from page
                      17, figures at
                      http://alice-publications.web.cern.ch/node/9207. Original
                      content from this work may be used under the terms of the
                      Creative Commons Attribution 4.0 licence. Any further
                      distribution of this work must maintain attribution to the
                      author(s) and the title of the work, journal citation and
                      DOI.},
      abstract     = {The knowledge of the material budget with a high precision
                      is fundamental for measurements of direct photonproduction
                      using the photon conversion method due to its direct impact
                      on the total systematic uncertainty. Moreover, it influences
                      many aspects of the charged-particle reconstruction
                      performance. In this article, two procedures to determine
                      data-driven corrections to the material-budget description
                      in ALICE simulation software are developed.One is based on
                      the precise knowledge of the gas composition in the Time
                      Projection Chamber. The other is based on the robustness of
                      the ratio between the produced number of photons and charged
                      particles, to a large extent due to the approximate isospin
                      symmetry in the number of produced neutral and charged
                      pions. Both methods are applied to ALICE data allowing for a
                      reduction of theoverall material budget systematic
                      uncertainty from $4.5\%$ down $to2.5\%.$ Using these
                      methods, a locally correct material budget is alsoachieved.
                      The two proposed methods are generic and can be applied
                      toany experiment in a similar fashion.},
      keywords     = {isospin: symmetry (INSPIRE) / photon: transition (INSPIRE)
                      / photon: direct production (INSPIRE) / ALICE (INSPIRE) /
                      programming (INSPIRE) / gas: admixture (INSPIRE) / time
                      projection chamber (INSPIRE) / performance (INSPIRE) / data
                      analysis method (INSPIRE) / pi: production (INSPIRE) /
                      numerical calculations (INSPIRE) / Analysis and statistical
                      methods (autogen) / Detector modelling and simulations I
                      (interaction of radiation with matter (autogen) /
                      interaction of photons with matter (autogen) / interaction
                      of hadrons with matter (autogen) / etc) (autogen) / Large
                      detector systems for particle and astroparticle physics
                      (autogen) / Particle tracking detectors (autogen)},
      cin          = {ALI / DTL / CIT / EXM / ALICE@CERN},
      ddc          = {610},
      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)16},
      eprint       = {2303.15317},
      howpublished = {arXiv:2303.15317},
      archivePrefix = {arXiv},
      SLACcitation = {$\%\%CITATION$ = $arXiv:2303.15317;\%\%$},
      UT           = {WOS:001125466800006},
      doi          = {10.1088/1748-0221/18/11/P11032},
      url          = {https://repository.gsi.de/record/348140},
}