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https://hdl.handle.net/2445/132847| Title: | Observation of J/ψϕ Structures Consistent with Exotic States from Amplitude Analysis of B+→J/ψϕK+ Decays |
| Author: | Badalov, Alexey Calvo Gómez, Míriam Garrido Beltrán, Lluís Gascón Fora, David Graciani Díaz, Ricardo Graugés Pous, Eugeni Marin Benito, Carla Picatoste Olloqui, Eduardo Rives Molina, Vicente José Vilasis-Cardona, Xavier LHCb Collaboration |
| Keywords: | Física de partícules Experiments Particle physics Experiments |
| Issue Date: | 11-Jan-2017 |
| Publisher: | American Physical Society |
| Abstract: | The first full amplitude analysis of B+ -> J/psi phi K+ with J/psi -> mu(+)mu(-), phi -> K+K- decays is performed with a data sample of 3 fb(-1) of pp collision data collected at root s = 7 and 8 TeV with the LHCb detector. The data cannot be described by a model that contains only excited kaon states decaying into phi K+ , and four J/psi phi structures are observed, each with significance over 5 standard deviations. The quantum numbers of these structures are determined with significance of at least 4 standard deviations. The lightest has mass consistent with, but width much larger than, previous measurements of the claimed X(4140) state. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.118.022003 |
| It is part of: | Physical Review Letters, 2017, vol. 118, num. 2, p. 022003 |
| URI: | https://hdl.handle.net/2445/132847 |
| Related resource: | https://doi.org/10.1103/PhysRevLett.118.022003 |
| ISSN: | 0031-9007 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) |
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