Mid-rapidity anti-baryon to baryon ratios in pp collisions at √s = 0.9, 2.76 and 7 TeV measured by ALICE

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dc.contributor.affiliationPontificia Universidad Católica del Perú. Departamento de Ciencias
dc.contributor.authorAbbas, E.
dc.contributor.authorAbelev, B.
dc.contributor.authorAdam, J.
dc.contributor.authorAdamovã, D.
dc.contributor.authorAdare, A.M.
dc.contributor.authorAggarwal, M.M.
dc.contributor.authorAglieri Rinella, G.A.
dc.contributor.authorAgnello, M.
dc.contributor.authorAgócs, A.G.
dc.contributor.authorAgostinelli, A.
dc.contributor.authorAhammed, Z.
dc.contributor.authorAhmad, N.
dc.contributor.authorAhmad Masoodi, A.
dc.contributor.authorAhmed, I.
dc.contributor.authorAhn, S.A.
dc.contributor.authorAhn, S.U.
dc.contributor.authorAimo, I.
dc.contributor.authorAjaz, M.
dc.contributor.authorAkindinov, A.
dc.contributor.authorAle
dc.date.accessioned2026-03-13T17:00:52Z
dc.date.issued2013
dc.description.abstractThe ratios of yields of anti-baryons to baryons probes the mechanisms of baryon-number transport. Results for p/p, /, +/ − and +/ − in pp collisions at √s = 0.9, 2.76 and 7 TeV, measured with the ALICE detector at the LHC, are reported. Within the experimental uncertainties and ranges covered by our measurement, these ratios are independent of rapidity, transverse momentum and multiplicity for all measured energies. The results are compared to expectations from event generators, such as PYTHIA and HIJING/B, that are used to model the particle production in pp collisions. The energy dependence of p/p, /, +/ − and +/ −, reaching values compatible with unity for √s = 7 TeV, complement the earlier p/p measurement of ALICE. These dependencies can be described by exchanges with the Regge-trajectory intercept of αJ ≈ 0.5, which are suppressed with increasing rapidity interval y. Any significant contribution of an exchange not suppressed at large y (reached at LHC energies) is disfavoured.
dc.description.sponsorshipFunding: The ALICE collaboration acknowledges the following funding agencies for their support in building and running the ALICE detector: State Committee of Science, World Federation of Scientists (WFS) and Swiss Fonds Kidagan, Armenia, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq), Financiadora de Estudos e Projetos (FINEP), Fundação de Amparo à Pesquisa 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 Technology of China (MSTC); Ministry of Education and Youth of the Czech Republic; Danish Natural Science Research Council, the Carlsberg Foundation and the Danish National Research Foundation; The European Research Council under the European Community's Seventh 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 BMBF and the Helmholtz Association; General Secretariat for Research and Technology, Ministry of Development, Greece; Hungarian OTKA and National Office for Research and Technology (NKTH); Department of Atomic Energy and Department of Science and Technology of the Government of India; Istituto Nazionale di Fisica Nucleare (INFN) and Centro Fermi—Museo Storico della Fisica e Centro Studi e Ricerche "Enrico Fermi", Italy; MEXT Grant-in-Aid for Specially Promoted Research, Japan; Joint Institute for Nuclear Research, Dubna; National Research Foundation of Korea (NRF); CONACYT, DGAPA, México, ALFA-EC and the EPLANET Program (European Particle Physics Latin American Network) Stichting voor Fundamenteel Onderzoek der Materie (FOM) and the Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO), Netherlands; Research Council of Norway (NFR); Polish Ministry of Science and Higher Education; National Authority for Scientific Research—NASR (Autoritatea Naţională pentru Cercetare Ştiinţifică—ANCS); Ministry of Education and Science of Russian Federation, Russian Academy of Sciences, Russian Federal Agency of Atomic Energy, Russian Federal Agency for Science and Innovations and The Russian Foundation for Basic Research; Ministry of Education of Slovakia; Department of Science and Technology, South Africa; CIEMAT, EELA, Ministerio de Economía y Competitividad (MINECO) of Spain, Xunta de Galicia (Consellería de Educación), CEADEN, Cubaenergía, Cuba, and IAEA (International Atomic Energy Agency); Swedish Research Council (VR) and Knut & Alice Wallenberg Foundation (KAW); Ukraine Ministry of Education and Science; United Kingdom Science and Technology Facilities Council (STFC); The United States Department of Energy, the United States National Science Foundation, the State of Texas, and the State of Ohio.
dc.identifier.doihttps://doi.org/10.1140/epjc/s10052-013-2496-5
dc.identifier.urihttp://hdl.handle.net/20.500.14657/206777
dc.language.isoeng
dc.publisherSpringer Science and Business Media, LLC
dc.relation.ispartofurn:issn:1434-6044
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.sourceEuropean Physical Journal C; Vol. 73, Núm. 7 (2013)
dc.subjectPhysics
dc.subjectRapidity
dc.subjectBaryon
dc.subjectLambda
dc.subjectParticle physics
dc.subjectOmega
dc.subjectLarge Hadron Collider
dc.subjectHyperon
dc.subjectMultiplicity (mathematics)
dc.subjectProduction (economics)
dc.subjectEnergy (signal processing)
dc.subjectNuclear physics
dc.subjectQuantum mechanics
dc.subjectGeometry
dc.subject.ocdehttps://purl.org/pe-repo/ocde/ford#1.03.04
dc.titleMid-rapidity anti-baryon to baryon ratios in pp collisions at √s = 0.9, 2.76 and 7 TeV measured by ALICE
dc.typehttp://purl.org/coar/resource_type/c_6501
dc.type.otherArtículo
dc.type.versionhttps://vocabularies.coar-repositories.org/version_types/c_970fb48d4fbd8a85/

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