Measurement of the relative B-c(+/-)/B-+/- production cross section with the ATLAS detector at root s=8 TeV

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URI: http://hdl.handle.net/10481/70477
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Author
Aaboud, M.; Aguilar Saavedra, Juan Antonio; Atlas Collaboration
Editorial
American Physical Society
Date
2021-07-26
Referencia bibliográfica
Aaboud, M... [et al.] (2021). Measurement of the relative B c±/B±production cross section with the ATLAS detector at s= 8 TeV. Physical Review D, 104(1), 012010. DOI: [10.1103/PhysRevD.104.012010]
Sponsorship
CERN; ANPCyT; YerPhI, Armenia; Australian Research Council; BMWFW, Austria Austrian Science Fund (FWF); Azerbaijan National Academy of Sciences (ANAS); SSTC, Belarus; Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP); Natural Sciences and Engineering Research Council of Canada (NSERC) Canada Foundation for Innovation; National Natural Science Foundation of China (NSFC); Departamento Administrativo de Ciencia, Tecnologia e Innovacion Colciencias; Ministry of Education, Youth & Sports - Czech Republic; MPO CR; Czech Republic Government; DNRF; Danish Natural Science Research Council; Centre National de la Recherche Scientifique (CNRS) CEA-DRF/IRFU, France; Federal Ministry of Education & Research (BMBF); Max Planck Society; Greek Ministry of Development-GSRT; RGC and Hong Kong SAR, China; Israel Science Foundation Benoziyo Center, Israel; Istituto Nazionale di Fisica Nucleare (INFN); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science; CNRST, Morocco; NWO, Netherlands; RCN, Norway; Ministry of Science and Higher Education, Poland NCN, Poland; Portuguese Foundation for Science and Technology European Commission; MNE/IFA, Romania; Ministry of Education, Science & Technological Development, Serbia; MSSR, Slovakia; Slovenian Research Agency - Slovenia MIZS, Slovenia; Spanish Government; SRC; Wallenberg Foundation, Sweden; Swiss National Science Foundation (SNSF); Ministry of Science and Technology, Taiwan; Ministry of Energy & Natural Resources - Turkey; UK Research & Innovation (UKRI); Science & Technology Facilities Council (STFC); United States Department of Energy (DOE) National Science Foundation (NSF); BCKDF; CANARIE; Beijing Municipal Science & Technology Commission; COST, ERC European Commission Marie Sklodowska-Curie Actions, European Union; French National Research Agency (ANR); German Research Foundation (DFG); European Commission; Alexander von Humboldt Foundation; Greek NSRF, Greece; BSF-NSF; German-Israeli Foundation for Scientific Research and Development; La Caixa Foundation; CERCA Programme Generalitat de Catalunya PROMETEO Generalitat Valenciana; Goran Gustafssons Stiftelse, Sweden; Royal Society of London; European Commission; Leverhulme Trust; NDGF (Denmark, Norway, Sweden); KIT/GridKA (Germany); INFN-CNAF (Italy); NL-T1 (Netherlands), PIC (Spain); ASGC (Taiwan); BNL (USA)
Abstract
The total cross section and differential cross sections for the production of B c mesons, times their branching fraction to J=ψπ , are measured relative to those for the production of B mesons, times their branching fraction to J=ψK . The data used for this study correspond to an integrated luminosity of 20.3 fb−1 of pp collisions recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a center-of-mass energy of ffiffiffi s p ¼ 8 TeV. The measurement is performed differentially in bins of transverse momentum pT for 13 GeV < pTðB c Þ < 22 GeV and pTðB c Þ > 22 GeV and in bins of rapidity y for jyj < 0.75 and 0.75 < jyj < 2.3. The relative cross section times branching fraction for the full range pT > 13 GeV and jyj < 2.3 is ð0.34 0.04stat þ0.06 −0.02 sys 0.01lifetimeÞ%. The differential measurements suggest that the production cross section of the B c decreases faster with pT than the production cross section of the B , while no significant dependence on rapidity is observed.
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