Measurements of ψ(2S) and X(3872) → J/ψπ + π − production in pp collisions at √s= 8 TeV with the ATLAS detector
| dc.contributor.author | Aaboud, M. | |
| dc.contributor.author | Albert, Justin | |
| dc.contributor.author | David, Claire | |
| dc.contributor.author | Elliot, Alison A. | |
| dc.contributor.author | Fincke-Keeler, J. | |
| dc.contributor.author | Hamano, Kenji | |
| dc.contributor.author | Hill, Ewan Chin | |
| dc.contributor.author | Keeler, Richard | |
| dc.contributor.author | Kowalewski, Robert | |
| dc.contributor.author | Kuwertz, E. S. | |
| dc.contributor.author | Kwan, Tony | |
| dc.contributor.author | LeBlanc, Matthew Edgar | |
| dc.contributor.author | Lefebvre, Michel | |
| dc.contributor.author | McPherson, Robert A. | |
| dc.contributor.author | Pearce, James D. | |
| dc.contributor.author | Seuster, Rolf | |
| dc.contributor.author | Sobie, Randall J. | |
| dc.contributor.author | Trovatelli, M. | |
| dc.contributor.author | Venturi, M. | |
| dc.contributor.author | ATLAS Collaboration | |
| dc.date.accessioned | 2020-03-20T21:15:21Z | |
| dc.date.available | 2020-03-20T21:15:21Z | |
| dc.date.copyright | 2017 | en_US |
| dc.date.issued | 2017 | |
| dc.description.abstract | Differential cross sections are presented for the prompt and non-prompt production of the hidden-charm states X(3872) and psi(2S), in the decay mode J/psi pi (+) pi (-), measured using 11.4 fb(-1) of pp collisions at root s = 8 Tev by the ATLAS detector at the LHC. The ratio of cross-sections X(3872)/psi(2S) is also given, separately for prompt and non-prompt components, as well as the non-prompt fractions of X(3872) and psi(2S). Assuming independent single effective lifetimes for non-prompt X(3872) and psi(2S) production gives separating short- and long-lived contributions, assuming that the short-lived component is due to B (c) decays, gives R (B) = (3.57 +/- 0.33(stat) +/- 0.11(sys)) x 10(-2), with the fraction of non-prompt X(3872) produced via B (c) decays for p (T)(X(3872)) > 10 GeV being (25 +/- 13(stat) +/- 2(sys) +/- 5(spin))%. The distributions of the dipion invariant mass in the X(3872) and psi(2S) decays are also measured and compared to theoretical predictions. | en_US |
| dc.description.reviewstatus | Reviewed | en_US |
| dc.description.scholarlevel | Faculty | en_US |
| dc.description.sponsorship | 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, Aus- tralia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; FOM and NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; MES of Russia and NRC KI, Russian Federation; JINR; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZSˇ, Slovenia; DST/NRF, South Africa; MINECO, 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, the Canada Council, CANARIE, CRC, Compute Canada, FQRNT, and the Ontario Innovation Trust, Canada; EPLANET, ERC, FP7, Horizon 2020 and Marie Sklodowska-Curie Actions, European Union; Investissements d’Avenir Labex and Idex, ANR, R´egion Auvergne and Fondation Partager le Savoir, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co- financed by EU-ESF and the Greek NSRF; BSF, GIF and Minerva, Israel; BRF, Norway; Generalitat de Catalunya, Generalitat Valenciana, Spain; the Royal Society and Lever- hulme 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 (U.K.) and BNL (U.S.A.), the Tier-2 facilities worldwide and large non-WLCG resource providers. Major contributors of computing resources are listed in ref. [38]. | en_US |
| dc.identifier.citation | Aaboud, M.; Aad, G.; Abbott, B.; Abdallah, J.; Abdinov, O.; Abeloos, B.; … & Zwalinski, L. (2017). Measurements of ψ(2S) and X(3872) → J/ψπ + π − production in pp collisions at √s= 8 TeV with the ATLAS detector. Journal of High Energy Physics, 2017(1), article 117. DOI: 10.1007/JHEP01(2017)117 | en_US |
| dc.identifier.uri | https://doi.org/10.1007/JHEP01(2017)117 | |
| dc.identifier.uri | http://hdl.handle.net/1828/11632 | |
| dc.language.iso | en | en_US |
| dc.publisher | Journal of High Energy Physics | en_US |
| dc.subject | B physics | |
| dc.subject | Hadron-Hadron scattering (experiments) | |
| dc.subject.department | Department of Physics and Astronomy | |
| dc.title | Measurements of ψ(2S) and X(3872) → J/ψπ + π − production in pp collisions at √s= 8 TeV with the ATLAS detector | en_US |
| dc.type | Article | en_US |