dc.contributor.author | Lees, Jean-Pierre | |
dc.contributor.author | Poireau, Vincent | |
dc.contributor.author | Tisserand, Vincent | |
dc.contributor.author | Grauges, Eugeni | |
dc.contributor.author | Palano, Antimo | |
dc.contributor.author | Eigen, Gerald | |
dc.contributor.author | Brown, David Nathan | |
dc.contributor.author | Kolomensky, Yury G. | |
dc.contributor.author | Fritsch, Miriam | |
dc.contributor.author | Koch, Helmut | |
dc.contributor.author | Schroeder, Torsten | |
dc.contributor.author | Cheaib, Racha | |
dc.contributor.author | Hearty, Christopher | |
dc.contributor.author | Mattison, Tom S. | |
dc.contributor.author | McKenna, Janis A. | |
dc.contributor.author | So, Rocky Y. | |
dc.contributor.author | Blinov, Vladimir E. | |
dc.contributor.author | Buzykaev, Alexey | |
dc.contributor.author | Druzhinin, Vladimir P. | |
dc.contributor.author | Kozyrev, Evgeny A. | |
dc.contributor.author | Kravchenko, Evgeniy A. | |
dc.contributor.author | Onuchin, Alexei P. | |
dc.contributor.author | Serednyakov, Sergey I. | |
dc.contributor.author | Skovpen, Yuri I. | |
dc.contributor.author | Solodov, Evgeni Petrovich | |
dc.contributor.author | Todyshev, Korneliy Yu. | |
dc.contributor.author | Lankford, Andrew J. | |
dc.contributor.author | Dey, Biplab | |
dc.contributor.author | Gary, J. William | |
dc.contributor.author | Long, Owen | |
dc.contributor.author | Eisner, Alan M. | |
dc.contributor.author | Lockman, William S. | |
dc.contributor.author | Panduro-Vazquez, William | |
dc.contributor.author | Chao, Daniel S. | |
dc.contributor.author | Cheng, Chih-Hsiang | |
dc.contributor.author | Echenard, Bertrand | |
dc.contributor.author | Flood, Kevin T. | |
dc.contributor.author | Hitlin, David G. | |
dc.contributor.author | Kim, Jae | |
dc.contributor.author | Lee, Myeongjae | |
dc.contributor.author | Miyashita, Tomonari S. | |
dc.contributor.author | Ongmongkolkul, Piti | |
dc.contributor.author | Oyang, James | |
dc.contributor.author | Porter, Frank C. | |
dc.contributor.author | Röhrken, Markus | |
dc.contributor.author | Huard, Zachary | |
dc.contributor.author | Meadows, Brian T. | |
dc.contributor.author | Pushpawela, Buddhi G. | |
dc.contributor.author | Sokoloff, Michael D. | |
dc.contributor.author | Sun, Liang | |
dc.contributor.author | BABAR, Collaboration | |
dc.date.accessioned | 2022-03-29T12:24:34Z | |
dc.date.available | 2022-03-29T12:24:34Z | |
dc.date.created | 2022-03-05T17:50:13Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2470-0010 | |
dc.identifier.uri | https://hdl.handle.net/11250/2988381 | |
dc.description.abstract | We study the processes γγ→ηc→η′K+K−, η′π+π−, and ηπ+π− using a data sample of 519 fb−1 recorded with the BABAR detector operating at the SLAC PEP-II asymmetric-energy e+e− collider at center-of-mass energies at and near the Υ(nS) (n=2, 3, 4) resonances. This is the first observation of the decay ηc→η′K+K− and we measure the branching fraction Γ(ηc→η′K+K−)/(Γ(ηc→η′π+π−)=0.644±0.039stat±0.032sys. Significant interference is observed between γγ→ηc→ηπ+π− and the nonresonant two-photon process γγ→ηπ+π−. A Dalitz plot analysis is performed of ηc decays to η′K+K−, η′π+π−, and ηπ+π−. Combined with our previous analysis of ηc→K¯Kπ, we measure the K∗0(1430) parameters and the ratio between its η′K and πK couplings. The decay ηc→η′π+π− is dominated by the f0(2100) resonance, also observed in J/ψ radiative decays. A new a0(1700)→ηπ resonance is observed in the ηc→ηπ+π− channel. We also compare ηc decays to η and η′ final states in association with scalar mesons as they relate to the identification of the scalar glueball. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | American Physical Society | |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.title | Light meson spectroscopy from Dalitz plot analyses of ηc decays to η0 K+K− , η0 π + π − , and ηπ + π − produced in two-photon interactions | en_US |
dc.type | Journal article | en_US |
dc.type | Peer reviewed | en_US |
dc.description.version | publishedVersion | en_US |
dc.source.articlenumber | 072002 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.doi | 10.1103/PhysRevD.104.072002 | |
dc.identifier.cristin | 2007800 | |
dc.source.journal | Physical Review D | en_US |
dc.subject.nsi | VDP::Kjerne- og elementærpartikkelfysikk: 431 | en_US |
dc.subject.nsi | VDP::Nuclear and elementary particle physics: 431 | en_US |
dc.identifier.citation | Physical Review D. 2021, 104 (7), 072002. | en_US |
dc.source.volume | 104 | en_US |
dc.source.issue | 7 | en_US |