@article{a222030a79fc4ef48e07b26bfa8c7b74,
title = "Measurement of the production of a W boson in association with a charmed hadron in pp collisions at √s=13 TeV with the ATLAS detector",
abstract = "The production of a W boson in association with a single charm quark is studied using 140 fb - 1 of s = 13 TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. The charm quark is tagged by the presence of a charmed hadron reconstructed with a secondary-vertex fit. The W boson is reconstructed from the decay to either an electron or a muon and the missing transverse momentum present in the event. The charmed mesons reconstructed are D + → K - π + π + and D * + → D 0 π + → ( K - π + ) π + and the charge conjugate decays in the fiducial regions where p T ( e , μ ) > 30 GeV , | η ( e , μ ) | < 2.5 , p T ( D ( * ) ) > 8 GeV , and | η ( D ( * ) ) | < 2.2 . The integrated and normalized differential cross sections as a function of the pseudorapidity of the lepton from the W boson decay, and of the transverse momentum of the charmed hadron, are extracted from the data using a profile likelihood fit. The measured total fiducial cross sections are σ fid OS - SS ( W - + D + ) = 50.2 ± 0.2 ( stat ) - 2.3 + 2.4 ( syst ) pb , σ fid OS - SS ( W + + D - ) = 48.5 ± 0.2 ( stat ) - 2.2 + 2.3 ( syst ) pb , σ fid OS - SS ( W - + D * + ) = 51.1 ± 0.4 ( stat ) - 1.8 + 1.9 ( syst ) pb , and σ fid OS - SS ( W + + D * - ) = 50.0 ± 0.4 ( stat ) - 1.8 + 1.9 ( syst ) pb . Results are compared with the predictions of next-to-leading-order quantum chromodynamics calculations performed using state-of-the-art parton distribution functions. Additionally, the ratio of charm to anticharm production cross sections is studied to probe the s - s ¯ quark asymmetry. The ratio is found to be R c ± = 0.971 ± 0.006 ( stat ) ± 0.011 ( syst ) . The ratio and cross-section measurements are consistent with the predictions obtained with parton distribution function sets that have a symmetric s - s ¯ sea, indicating that any s - s ¯ asymmetry in the Bjorken- x region relevant for this measurement is small.",
author = "{Atlas Collaboration} and Filmer, {E. K.} and P. Jackson and Kong, {A. X.Y.} and H. Potti and Ruggeri, {T. A.} and Ting, {E. X.L.} and White, {M. J.} and Gingrich, {D. M.} and Lindon, {J. H.} and N. Nishu and Pinfold, {J. L.} and O. Cakir and Yildiz, {H. Duran} and S. Kuday and {Turk Cakir}, I. and S. Sultansoy and {Adam Bourdarios}, C. and O. Arnaez and N. Berger and F. Costanza and M. Delmastro and {Di Ciaccio}, L. and T. Guillemin and T. Hryn{\textquoteright}ova and S. J{\'e}z{\'e}quel and I. Koletsou and J. Lev{\^e}que and Lewis, {D. J.} and Little, {J. D.} and {Lorenzo Martinez}, N. and G. Poddar and {Sanchez Pineda}, A. and E. Sauvan and L. Selem and G. Bernardi and M. Bomben and R. Bouquet and {Di Gregorio}, G. and A. Li and G. Marchiori and Q. Shen and Y. Zhang and S. Chekanov and S. Darmora and Hopkins, {W. H.} and J. Hoya and E. Kourlitis and Hooberman, {B. H.} and Neubauer, {M. S.} and Sickles, {A. M.}",
note = "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; Yerevan Physics Institute (YerPhI), Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; ANID, Chile; CAS, MOST, and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and Danish Natural Science Research Council (DNSRC), Denmark; IN2P3-CNRS and Institut de recherche sur les lois fondamentales de l{\textquoteright}Univers, Direction des Sciences de la Mati{\`e}re, Commissariat {\`a} l{\textquoteright}{\'E}nergie Atomique (CEA-DRF/IRFU), France; Shota Rustaveli National Science Foundation of Georgia (SRNSFG), Georgia; BMBF, HGF, and MPG, Germany; General Secretariat for Research and Innovation (GSRI), Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; Ministry of Education, Science, Research and Sport (MSSR), Slovakia; ARRS and MIZ{\v Z}, Slovenia; DSI/NRF, South Africa; MICINN, Spain; Swedish Research Council (SRC) and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, T{\"u}rkiye; STFC, United Kingdom; DOE and NSF, USA. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada and CRC, Canada; RIMUS Research Programme (PRIMUS 21/SCI/017) and The University Research Center (UNCE SCI/013), Czech Republic; COST, ERC, ERDF, Horizon 2020, and Marie Sk{\l}odowska-Curie Actions, European Union; Investissements d{\textquoteright}Avenir Labex, Investissements d{\textquoteright}Avenir Idex, and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programs co-financed by EU-ESF and the National Strategic Reference Framework (Greek NSRF), Greece; BSF-NSF and MINERVA Foundation (MINERVA), Israel; Norwegian Financial Mechanism 2014–2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya, and PROMETEO and GenT Programmes Generalitat Valenciana (PROMETEO) and GenT Programmes Generalitat Valenciana, Spain; G{\"o}ran 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 (United Kingdom), and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. . 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; Yerevan Physics Institute (YerPhI), Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; CNPq and FAPESP, Brazil; NSERC, NRC, and CFI, Canada; CERN; ANID, Chile; CAS, MOST, and NSFC, China; Minciencias, Colombia; MEYS CR, Czech Republic; DNRF and Danish Natural Science Research Council (DNSRC), Denmark; IN2P3-CNRS and Institut de recherche sur les lois fondamentales de l{\textquoteright}Univers, Direction des Sciences de la Mati{\`e}re, Commissariat {\`a} l{\textquoteright}{\'E}nergie Atomique (CEA-DRF/IRFU), France; Shota Rustaveli National Science Foundation of Georgia (SRNSFG), Georgia; BMBF, HGF, and MPG, Germany; General Secretariat for Research and Innovation (GSRI), Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MEiN, Poland; FCT, Portugal; MNE/IFA, Romania; MESTD, Serbia; Ministry of Education, Science, Research and Sport (MSSR), Slovakia; ARRS and MIZ{\v Z}, Slovenia; DSI/NRF, South Africa; MICINN, Spain; Swedish Research Council (SRC) and Wallenberg Foundation, Sweden; SERI, SNSF, and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TENMAK, T{\"u}rkiye; STFC, United Kingdom; DOE and NSF, USA. In addition, individual groups and members have received support from BCKDF, CANARIE, Compute Canada and CRC, Canada; RIMUS Research Programme (PRIMUS 21/SCI/017) and The University Research Center (UNCE SCI/013), Czech Republic; COST, ERC, ERDF, Horizon 2020, and Marie Sk{\l}odowska-Curie Actions, European Union; Investissements d{\textquoteright}Avenir Labex, Investissements d{\textquoteright}Avenir Idex, and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales, and Aristeia programs co-financed by EU-ESF and the National Strategic Reference Framework (Greek NSRF), Greece; BSF-NSF and MINERVA Foundation (MINERVA), Israel; Norwegian Financial Mechanism 2014-2021, Norway; NCN and NAWA, Poland; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya, and PROMETEO and GenT Programmes Generalitat Valenciana (PROMETEO) and GenT Programmes Generalitat Valenciana, Spain; G{\"o}ran 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 (United Kingdom), and BNL (USA), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in Ref. [123].",
year = "2023",
month = aug,
day = "1",
doi = "10.1103/PhysRevD.108.032012",
language = "English (US)",
volume = "108",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",
}