Measurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at √s=8 and 13 TeV
Entity
UAM. Departamento de Física TeóricaPublisher
SpringerDate
2020-01-01Citation
10.1140/epjc/s10052-020-7606-6
European Physical Journal C 2020.80 (2020): 64
ISSN
1434-6044DOI
10.1140/epjc/s10052-020-7606-6Funded by
We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZŠ, Slovenia; DST/NRF, South Africa; MINECO, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOE and NSF, United States of America. In addition, individual groups and members have received support from BCKDF, CANARIE, CRC and Compute Canada, Canada; COST, ERC, ERDF, Horizon 2020, and Marie Skłodowska-Curie Actions, European Union; Investissements d’ Avenir Labex and Idex, 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 GIF, Israel; CERCA Programme Generalitat de Catalunya, Spain; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-CNAF (Italy), NL-T1 (Netherlands), PIC (Spain), ASGC (Taiwan), 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. [61]Editor's Version
https://doi.org/10.1140/epjc/s10052-020-7606-6Subjects
ATLAS detector; Dihadron; Z boson; LHC; FísicaNote
Artículo escrito por un elevado número de autores, sólo se referencian el que aparece en primer lugar, el nombre del grupo de colaboración, si le hubiera, y los autores pertenecientes a la UAMRights
© 2020, CERN for the benefit of the ATLAS collaborationAbstract
Results are presented from the measurement by ATLAS of long-range (|Δ𝜂|>2) dihadron angular correlations in 𝑠√=8 and 13 TeV pp collisions containing a Z boson. The analysis is performed using 19.4 fb−1 of 𝑠√=8 TeV data recorded during Run 1 of the LHC and 36.1 fb−1 of 𝑠√=13 TeV data recorded during Run 2. Two-particle correlation functions are measured as a function of relative azimuthal angle over the relative pseudorapidity range 2<|Δ𝜂|<5 for different intervals of charged-particle multiplicity and transverse momentum. The measurements are corrected for the presence of background charged particles generated by collisions that occur during one passage of two colliding proton bunches in the LHC. Contributions to the two-particle correlation functions from hard processes are removed using a template-fitting procedure. Sinusoidal modulation in the correlation functions is observed and quantified by the second Fourier coefficient of the correlation function, 𝑣2,2, which in turn is used to obtain the single-particle anisotropy coefficient 𝑣2. The 𝑣2 values in the Z-tagged events, integrated over 0.5<𝑝T<5 GeV, are found to be independent of multiplicity and 𝑠√, and consistent within uncertainties with previous measurements in inclusive pp collisions. As a function of charged-particle 𝑝T, the Z-tagged and inclusive 𝑣2 values are consistent within uncertainties for 𝑝T<3 GeV
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Google Scholar:Aaboud, M.
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Aguilar Saavedra, Juan Antonio
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Glasman Kuguel, Claudia Beatriz
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Hervás León, Luis
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Terrón Cuadrado, Juan
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ATLAS Collaboration
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