Measurement of the relative B-c(+/-)/B-+/- production cross section with the ATLAS detector at root s=8 TeV Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. 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; ANID, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRT, 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 and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; JINR; MES of Russia and NRC KI, Russian Federation; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MICINN, 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, Compute Canada, CRC and IVADO, Canada; Beijing Municipal Science & Technology Commission, China; COST, ERC, ERDF, Horizon 2020 and Marie Sklodowska-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 GIF, Israel; 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. 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. [35]. 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. 2021-09-28T06:40:14Z 2021-09-28T06:40:14Z 2021-07-26 journal article 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] http://hdl.handle.net/10481/70477 10.1103/PhysRevD.104.012010 eng http://creativecommons.org/licenses/by/3.0/es/ open access Atribución 3.0 España American Physical Society