Dispersive calculation of complex Regge trajectories for the lightest f_2 resonances and the K^∗(892)
| dc.contributor.author | Carrasco, J. A. | |
| dc.contributor.author | Nebreda Manjón, Jenifer | |
| dc.contributor.author | Peláez Sagredo, José Ramón | |
| dc.date.accessioned | 2023-06-18T06:48:50Z | |
| dc.date.available | 2023-06-18T06:48:50Z | |
| dc.date.issued | 2015-10-07 | |
| dc.description | © 2015 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. We would like to than M.R. Pennington for several discussions. J.R.P. and J.N. are supported by the Spanish project FPA2011-27853-C02-02 and the Spanish network FIS2014-57026-REDT. J.N. acknowledges funding by the Fundación Ramón Areces. A.P.S. work is supported in part by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under contracts DEAC05-06OR23177 and DE-FG0287ER40365. | |
| dc.description.abstract | We apply a recently developed dispersive formalism to calculate the Regge trajectories of the f_2(1270), f´_ 2(1525) and K^∗(892) mesons. Trajectories are calculated, not fitted to a family of resonances. Assuming that these resonances can be treated in the elastic approximation, the only input are the pole position and residue of a resonance. In all three cases, the predicted Regge trajectories are almost real and linear, with slopes in agreement with the universal value of order 1 GeV_(−2). We also show how these results barely change when considering more than two subtractions in the dispersive formalism. | |
| dc.description.department | Depto. de Física Teórica | |
| dc.description.faculty | Fac. de Ciencias Físicas | |
| dc.description.refereed | TRUE | |
| dc.description.sponsorship | Ministerio de Economía y Competitividad (MINECO) | |
| dc.description.sponsorship | Fundacion Ramon Areces | |
| dc.description.sponsorship | U.S. Department of Energy | |
| dc.description.sponsorship | U.S. Department of Energy, Office of Science, Office of Nuclear Physics | |
| dc.description.status | pub | |
| dc.eprint.id | https://eprints.ucm.es/id/eprint/34973 | |
| dc.identifier.doi | 10.1016/j.physletb.2015.08.019 | |
| dc.identifier.issn | 0370-2693 | |
| dc.identifier.officialurl | http://dx.doi.org/10.1016/j.physletb.2015.08.019 | |
| dc.identifier.relatedurl | http://www.sciencedirect.com | |
| dc.identifier.uri | https://hdl.handle.net/20.500.14352/24277 | |
| dc.journal.title | Physics letters B | |
| dc.language.iso | eng | |
| dc.page.final | 403 | |
| dc.page.initial | 399 | |
| dc.publisher | Elsevier Science BV | |
| dc.relation.projectID | FPA2011-27853-C02-02 | |
| dc.relation.projectID | FPA2011-27853-C02-02 | |
| dc.relation.projectID | DE-AC05-06OR23177 | |
| dc.relation.projectID | DE-FG0287ER40365 | |
| dc.rights | Atribución 3.0 España | |
| dc.rights.accessRights | open access | |
| dc.rights.uri | https://creativecommons.org/licenses/by/3.0/es/ | |
| dc.subject.cdu | 51-73 | |
| dc.subject.keyword | Multiquark hadrons | |
| dc.subject.keyword | Scalar mesons | |
| dc.subject.ucm | Física-Modelos matemáticos | |
| dc.subject.ucm | Física matemática | |
| dc.title | Dispersive calculation of complex Regge trajectories for the lightest f_2 resonances and the K^∗(892) | |
| dc.type | journal article | |
| dc.volume.number | 749 | |
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| dspace.entity.type | Publication | |
| relation.isAuthorOfPublication | 70900239-cb8b-49f3-931f-9dc6a8b7d8d5 | |
| relation.isAuthorOfPublication.latestForDiscovery | 70900239-cb8b-49f3-931f-9dc6a8b7d8d5 |
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