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Determination of the X(3872) Meson Quantum Numbers
| dc.contributor | Universitat Ramon Llull. La Salle | |
| dc.contributor | CERN | |
| dc.contributor.author | Calvo Gómez, Míriam | |
| dc.contributor.author | Camboni, Alessandro | |
| dc.contributor.author | Vilasís Cardona, Xavier | |
| dc.contributor.author | LHCb Collaboration - CERN | |
| dc.date.accessioned | 2020-06-19T17:36:27Z | |
| dc.date.accessioned | 2023-10-02T06:32:30Z | |
| dc.date.available | 2020-06-19T17:36:27Z | |
| dc.date.available | 2023-10-02T06:32:30Z | |
| dc.date.created | 2013 | |
| dc.date.issued | 2013-05-29 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14342/3294 | |
| dc.description.abstract | The quantum numbers of the X(3872) meson are determined to be JPC=1++ based on angular correlations in B+→X(3872)K+ decays, where X(3872)→π+π−J/ψ and J/ψ→μ+μ−. The data correspond to 1.0 fb−1 of pp collisions collected by the LHCb detector. The only alternative assignment allowed by previous measurements JPC=2−+ is rejected with a confidence level equivalent to more than 8 Gaussian standard deviations using a likelihood-ratio test in the full angular phase space. This result favors exotic explanations of the X(3872) state. | eng |
| dc.format.extent | 8 p. | cat |
| dc.language.iso | eng | cat |
| dc.publisher | American Physical Society | cat |
| dc.relation.ispartof | Physical Review Letters, 2013, Vol. 110, No. 22 (Maig) | cat |
| dc.rights | Attribution 4.0 International | |
| dc.rights | © CERN | |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | |
| dc.source | RECERCAT (Dipòsit de la Recerca de Catalunya) | |
| dc.subject.other | Gran col·lisionador d'hadrons (França i Suïssa) | cat |
| dc.subject.other | Partícules (Física nuclear) | cat |
| dc.subject.other | Col·lisions (Física nuclear) | cat |
| dc.title | Determination of the X(3872) Meson Quantum Numbers | cat |
| dc.type | info:eu-repo/semantics/article | cat |
| dc.type | info:eu-repo/semantics/publishedVersion | cat |
| dc.rights.accessLevel | info:eu-repo/semantics/openAccess | |
| dc.embargo.terms | cap | cat |
| dc.subject.udc | 53 | |
| dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.110.222001 | cat |
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