Underlying-event studies with strange hadrons in pp collisions at √ s = 13 TeV with the ATLAS detector

ATLAS Collaboration; G Aad; E Aakvaag; B Abbott; S Abdelhameed; D Garg; U Mallik

doi:10.1140/epjc/s10052-024-13243-1

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Underlying-event studies with strange hadrons in pp collisions at √ s = 13 TeV with the ATLAS detector

Journal article

Open access

Peer reviewed

Underlying-event studies with strange hadrons in pp collisions at √ s = 13 TeV with the ATLAS detector

ATLAS Collaboration, G Aad, E Aakvaag, B Abbott, S Abdelhameed, D Garg and U Mallik

The European physical journal C, Particles and fields, Vol.84(12), 1335

2024

DOI: 10.1140/epjc/s10052-024-13243-1

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Abstract

Properties of the underlying-event inpp interactions are investigated primarily via the strange hadrons K0S,Λ and ¯Λ, as reconstructed using the ATLAS detector at the LHC in minimum-bias pp collision data at √s=13 TeV. The hadrons are reconstructed via the identification of the displaced two-particle vertices corresponding to the decay modes K0S→π+π−,Λ→π−p and ¯Λ→π+¯p. These are used in the construction of underlying-event observables in azimuthal regions computed relative to the leading charged-particle jet in the event. None of the hadronisation and underlying-event physics models considered can describe the data over the full kinematic range considered. Events with a leading charged-particle jet in the range of 10<pT≤40 GeV are studied using the number of prompt charged particles in the transverse region. The ratio N(Λ→π∓p±)/N(K0S→π+π−) as a function of the number of such charged particles varies only slightly over this range. This disagrees with the expectations of some of the considered Monte Carlo models.

Antilambda --> pi+ anti-p

Antilambda: hadronic decay

Antilambda: yield

CERN LHC Coll

charged particle: jet

charged particle: multiplicity

data analysis method

decay modes

experimental results

GeV-cms

hadronization

K0(S) --> pi+ pi

K0(S): hadronic decay

K0(S): yield

kinematics

Lambda --> pi- p

Lambda: hadronic decay

Lambda: yield

multiplicity: dependence

numerical calculations: Monte Carlo

p p: colliding beams

p p: interaction

p p: scattering

track data analysis: vertex

transverse

two-particle

underlying event

yield: ratio: measured

Details

Title: Subtitle: Underlying-event studies with strange hadrons in pp collisions at √ s = 13 TeV with the ATLAS detector
Creators: ATLAS Collaboration
G Aad (Contributor) - Aix-Marseille Université
E Aakvaag (Contributor)
B Abbott (Contributor)
S Abdelhameed (Contributor)
D Garg (Contributor) - University of Iowa, Physics and Astronomy
U Mallik (Contributor)
Resource Type: Journal article
Publication Details: The European physical journal C, Particles and fields, Vol.84(12), 1335
DOI: 10.1140/epjc/s10052-024-13243-1
ISSN: 1434-6052
eISSN: 1434-6052
Publisher: Springer Nature; NEW YORK
Grant note: ANPCyT, ArgentinaYerPhI, ArmeniaARC, AustraliaBMWFW, AustriaFWF, AustriaANAS, AzerbaijanCNPq, BrazilFAPESP, BrazilNSERC, CanadaCFI, CanadaNSFC, ChinaMEYS CR, Czech RepublicDNRF, DenmarkDNSRC, DenmarkIN2P3-CNRS, FranceCEA-DRF/IRFU, FranceBMBF, GermanyMPG, GermanyHong Kong SAR, ChinaISF, IsraelINFN, ItalyMEXT, JapanJSPS, JapanCNRST, MoroccoRCN, NorwayMEiN, PolandFCT, PortugalMNE/IFA, RomaniaMESTD, SerbiaMSSR, SlovakiaARRS, SloveniaMIZS, SloveniaMICINN, SpainWallenberg Foundation, SwedenSERI, SwitzerlandMOST, TaiwanDOE, United States of AmericaNSF, United States of AmericaBCKDF, CanadaCANARIE, CanadaCompute Canada, CanadaCzech Republic: PRIMUS 21/SCI/017, UNCE SCI/013 COST, European UnionERC, European UnionERDF, European UnionHorizon 2020, European UnionMarie Skodowska-Curie Actions, European UnionInvestissements d'Avenir Labex, FranceInvestissements d'Avenir Idex , FranceANR, FranceDFG , GermanyAvH Foundation, GermanyHerakleitos programme - EU-ESF, GreeceThales programme - EU-ESF, GreeceAristeia programme - EU-ESF, GreeceGreek NSRF, GreeceBSF-NSF, IsraelMINERVA, IsraelNorwegian Financial Mechanism 2014-2021, NorwayNCN, PolandNAWA, PolandLa Caixa Banking Foundation, SpainCERCA Programme Generalitat de Catalunya, SpainPROMETEO Programme Generalitat Valenciana, SpainGenT Programme Generalitat Valenciana, SpainGoran Gustafssons Stiftelse, SwedenRoyal Society, United KingdomLeverhulme Trust, United KingdomSTFC, United KingdomTENMAK, TurkiyeCanton of Geneva, SwitzerlandCanton of Bern, SwitzerlandSNSF, SwitzerlandSRC, SwedenDSI/NRF, South AfricaNWO, NetherlandsBenoziyo Center, IsraelRGC, ChinaGSRI, GreeceHGF, GermanySRNSFG, GeorgiaMinciencias, ColombiaMOST, ChinaCAS, ChinaANID, ChileCERNNRC, CanadaChile: Agencia Nacional de Investigacion y Desarrollo: FONDECYT 1190886, FONDECYT 1210400, FONDECYT 1230987 China: National Natural Science Foundation of China: NSFC-12175119, NSFC 12275265 European Union: European Research Council: ERC-948254 Horizon 2020 Framework Programme: MUCCACHIST-ERA-19-XAI-00 Italian Center for High Performance Computing, Big Data and Quantum Computing (ICSC, NextGenerationEU), Marie Sklodowska-Curie Actions (EU H2020 MSC IF GRANT): 101033496 France: Agence Nationale de la Recherche: ANR-20-CE31-0013, ANR-21-CE310022 Investissements d'Avenir Idex: ANR-11-LABX0012 Investissements d'Avenir Labex: ANR-11-LABX0012 Germany: Baden-Wurttemberg Stiftung (BW Stiftung-Postdoc Eliteprogramme), Deutsche Forschungsgemeinschaft: DFG-CR 312/5-1 Italy: Istituto Nazionale di Fisica Nucleare (FELLINI): 754496 Japan: Japan Society for the Promotion of Science: JSPS KAKENHI 22H01227, JSPS KAKENHI JP21H05085, JSPS KAKENHI JP22H04944 Netherlands: Netherlands Organisation for Scientific Research: NWO Veni 2020-VI.Veni.202.179 Norway: Research Council of Norway: RCN-314472 Poland: Polish National Agency for Academic Exchange: PPN/PPO/2020/1/00002/U/00001 Polish National Science Centre: NCN 2021/42/E/ST2/00350, 2022/47/B/ST2/03059, NCN UMO-2019/34/E/ST2/00393, UMO-2020/37/B/ST2/01043 Slovenia: Slovenian Research Agency (ARIS Grant): J1-3010 Spain: BBVA Foundation: LEO22-1-603 Generalitat Valenciana (Artemisa, FEDER): IDIFEDER/2018/048 La Caixa Banking Foundation: LCF/BQ/PI20/11760025 Ministry of Science and Innovation: RYC2019-028510-I, RYC2020-030254-I Generalitat Valenciana: CIDEGENT/2019/023, CIDEGENT/2019/027 Sweden: Swedish Research Council: VR 202203845 Switzerland: Swiss National Science Foundation: SNSF-PCEFP2_194658 UK: Leverhulme Trust: RPG-2020-004 USA: Neubauer Family Foundation
We thank CERN for the very successful operation of the LHC and its injectors, as well as the support staff at CERN and at our institutions worldwide without whom ATLAS could not be operated efficiently. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF/SFU (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), RAL (UK) and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [56]. We gratefully acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRI, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DSI/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taipei; TENMAK, Turkiye; STFC, United Kingdom; DOE and NSF, United States of America. Individual groups and members have received support from BCKDF, CANARIE, CRC and DRAC, Canada; PRIMUS 21/SCI/017, CERN-CZ and FORTE, Czech Republic; COST, ERC, ERDF, Horizon 2020, ICSC-NextGenerationEU and Marie Skodowska-Curie Actions, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and MINERVA, Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. In addition, individual members wish to acknowledge support from CERN: European Organization for Nuclear Research (CERN PJAS); Chile: Agencia Nacional de Investigacion y Desarrollo (FONDECYT 1190886, FONDECYT 1210400, FONDECYT 1230987); China: National Natural Science Foundation of China (NSFC - 12175119, NSFC 12275265, NSFC-12075060); Czech Republic: Czech Science Foundation (GACR - 24-11373S), Ministry of Education Youth and Sports (FORTE CZ.02.01.01/00/22_008/0004632); European Union: European Research Council (ERC - 948254, ERC 101089007), Horizon 2020 Framework Programme (MUCCA - CHIST-ERA-19-XAI-00), Italian Center for High Performance Computing, Big Data and Quantum Computing (ICSC, NextGenerationEU); France: Agence Nationale de la Recherche (ANR-20-CE31-0013, ANR-21-CE31-0013, ANR-21-CE31-0022), Investissements d'Avenir Labex (ANR-11-LABX-0012); Germany: Baden-Wurttemberg Stiftung (BW Stiftung-Postdoc Eliteprogramme), Deutsche Forschungsgemeinschaft (DFG - 469666862, DFG - CR 312/5-2); Italy: Istituto Nazionale di Fisica Nucleare (ICSC, NextGenerationEU); Japan: Japan Society for the Promotion of Science (JSPS KAKENHI Grant No. 22KK0227, JSPS KAKENHI JP21H05085, JSPS KAKENHI JP22H01227, JSPS KAKENHI JP22H04944); Netherlands: Netherlands Organisation for Scientific Research (NWO Veni 2020 - VI.Veni.202.179); Norway: Research Council of Norway (RCN-314472); Poland: Polish National Agency for Academic Exchange (PPN/PPO/2020/1/00002/U/00001), Polish National Science Centre (NCN 2021/42/E/ST2/00350, NCN OPUS nr 2022/47/B/ST2/03059, NCN UMO-2019/34/E/ST2/00393, UMO-2020/37/B/ST2/01043, UMO-2021/40/C/ST2/00187, UMO-2022/47/O/ST2/00148, UMO-2023/49/B/ST2/04085); Slovenia: Slovenian Research Agency (ARIS grant J1-3010); Spain: Generalitat Valenciana (Artemisa, FEDER, IDIFEDER/2018/048), Ministry of Science and Innovation (MCIN and NextGenEU - PCI2022-135018-2, MICIN and FEDER - PID2021-125273NB, RYC2019-028510-I, RYC2020-030254-I), PROMETEO and GenT Programmes Generalitat Valenciana (CIDEGENT/2019/023, CIDEGENT/2019/027); Sweden: Swedish Research Council (VR 2018-00482, VR 2022-03845, VR 2022-04683, VR 2023-03403, VR grant 2021-03651), Knut and Alice Wallenberg Foundation (KAW 2018.0157, KAW 2018.0458, KAW 2019.0447, KAW 2022.0358); Switzerland: Swiss National Science Foundation (SNSF - PCEFP2_194658); United Kingdom: Leverhulme Trust (Leverhulme Trust RPG-2020-004), Royal Society (NIF-R1-231091); United States of America: Neubauer Family Foundation.
Language: English
Date published: 2024
Academic Unit: Physics and Astronomy
Record Identifier: 9984824321702771

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