RT Journal Article
T1 Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at √sNN=2.76 TeV
A1 ALICE Collaboration, 
A1 Armesto Pérez, Néstor
A1 González Ferreiro, Elena
A1 Pajares Vales, Carlos
A1 Salgado López, Carlos Alberto
K1 Quark gluon plasma
K1 Jet physics
K1 Heavy Ions
AB We report the measurement of a new observable of jet quenching in central Pb-Pb collisions at √sNN=2.76 TeV, based on the semi-inclusive rate of charged jets recoiling from a high transverse momentum (high-p T) charged hadron trigger. Jets are measured using collinear-safe jet reconstruction with infrared cutoff for jet constituents of 0.15 GeV, for jet resolution parameters R = 0.2, 0.4 and 0.5. Underlying event background is corrected at the event-ensemble level, without imposing bias on the jet population. Recoil jet spectra are reported in the range 20 < p  chT,jet < 100 GeV. Reference distributions for pp collisions at √s=2.76 TeV are calculated using Monte Carlo and NLO pQCD methods, which are validated by comparing with measurements in pp collisions at √s=7 TeV. The recoil jet yield in central Pb-Pb collisions is found to be suppressed relative to that in pp collisions. No significant medium-induced broadening of the intra-jet energy profile is observed within 0.5 radians relative to the recoil jet axis. The angular distribution of the recoil jet yield relative to the trigger axis is found to be similar in central Pb-Pb and pp collisions, with no significant medium-induced acoplanarity observed. Large-angle jet deflection, which may provide a direct probe of the nature of the quasi-particles in hot QCD matter, is explored.
PB Springer
YR 2015
FD 2015
LK http://hdl.handle.net/10347/21551
UL http://hdl.handle.net/10347/21551
LA eng
NO Adam, J., Adamová, D., Aggarwal, M.M. et al. Measurement of jet quenching with semi-inclusive hadron-jet distributions in central Pb-Pb collisions at √sNN=2.76 TeV. J. High Energ. Phys. 2015, 170 (2015). https://doi.org/10.1007/JHEP09(2015)170
NO The ALICE Collaboration acknowledgesthe following funding agencies for their support in building and running theALICE detector: State Committee of Science, World Federation of Scientists (WFS) andSwiss Fonds Kidagan, Armenia, Conselho Nacional de Desenvolvimento Cient´ıfico e Tecnológico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundacão de Amparo àPesquisa do Estado de São Paulo (FAPESP); National Natural Science Foundation of China(NSFC), the Chinese Ministry of Education (CMOE) and the Ministry of Science and Technologyof China (MSTC); Ministry of Education and Youth of the Czech Republic; DanishNatural Science Research Council, the Carlsberg Foundation and the Danish National ResearchFoundation; The European Research Council under the European Community’sSeventh Framework Programme; Helsinki Institute of Physics and the Academy of Finland;French CNRS-IN2P3, the ‘Region Pays de Loire’, ‘Region Alsace’, ‘Region Auvergne’and CEA, France; German Bundesministerium fur Bildung, Wissenschaft, Forschung und Technologie (BMBF) and the Helmholtz Association; General Secretariat for Research andTechnology, Ministry of Development, Greece; Hungarian Orszagos Tudomanyos KutatasiAlappgrammok (OTKA) and National Office for Research and Technology (NKTH); Departmentof Atomic Energy and Department of Science and Technology of the Governmentof India; Istituto Nazionale di Fisica Nucleare (INFN) and Centro Fermi — Museo Storicodella Fisica e Centro Studi e Ricerche “Enrico Fermi”, Italy; MEXT Grant-in-Aid forSpecially Promoted Research, Japan; Joint Institute for Nuclear Research, Dubna; NationalResearch Foundation of Korea (NRF); Consejo Nacional de Cienca y Tecnologia(CONACYT), Direccion General de Asuntos del Personal Academico (DGAPA), México:Amerique Latine Formation academique — European Commission (ALFA-EC) and theEPLANET Program (European Particle Physics Latin American Network) Stichting voorFundamenteel Onderzoek der Materie (FOM) and the Nederlandse Organisatie voorWetenschappelijkOnderzoek (NWO), Netherlands; Research Council of Norway (NFR); NationalScience Centre, Poland; Ministry of National Education/Institute for Atomic Physics andConsiliul National al Cercetarii Stiintifice — Executive Agency for Higher Education ResearchDevelopment and Innovation Funding (CNCS-UEFISCDI) — Romania; Ministryof Education and Science of Russian Federation, Russian Academy of Sciences, RussianFederal Agency of Atomic Energy, Russian Federal Agency for Science and Innovationsand The Russian Foundation for Basic Research; Ministry of Education of Slovakia; Departmentof Science and Technology, South Africa; Centro de Investigaciones Energeticas,Medioambientales y Tecnologicas (CIEMAT), E-Infrastructure shared between Europe andLatin America (EELA), Ministerio de Economía y Competitividad (MINECO) of Spain,Xunta de Galicia (Consellería de Educación), Centro de Aplicaciones Tecnológicas y DesarrolloNuclear (CEADEN), Cubaenergía, Cuba, and IAEA (International Atomic EnergyAgency); Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation(KAW); Ukraine Ministry of Education and Science; United Kingdom Science and TechnologyFacilities Council (STFC); The United States Department of Energy, the UnitedStates National Science Foundation, the State of Texas, and the State of Ohio; Ministryof Science, Education and Sports of Croatia and Unity through Knowledge Fund, Croatia.Council of Scientific and Industrial Research (CSIR), New Delhi, India.
DS Minerva
RD 28 abr 2026