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Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics
| 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 | 2020-11-23T16:40:53Z | |
| dc.date.accessioned | 2023-10-02T06:25:28Z | |
| dc.date.available | 2020-11-23T16:40:53Z | |
| dc.date.available | 2023-10-02T06:25:28Z | |
| dc.date.created | 2019-10 | |
| dc.date.issued | 2020-03 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14342/3076 | |
| dc.description.abstract | The ratio of the B0s and B+ fragmentation fractions fs and fu is studied with B0s→J/ψϕ and B+→J/ψK+ decays using data collected by the LHCb experiment in proton-proton collisions at 7, 8, and 13 TeV center-of-mass energies. The analysis is performed in bins of B-meson momentum, longitudinal momentum, transverse momentum, pseudorapidity, and rapidity. The fragmentation-fraction ratio fs/fu is observed to depend on the B-meson transverse momentum with a significance of 6.0σ. This dependency is driven by the 13 TeV sample (8.7σ), while the results for the other collision energies are not significant when considered separately. Furthermore, the results show a 4.8σ evidence for an increase of fs/fu as a function of collision energy. | eng |
| dc.format.extent | 11 p. | cat |
| dc.language.iso | eng | cat |
| dc.publisher | American Physical Society | cat |
| dc.relation.ispartof | Physical Review Letters, 2020, Vol.124, 122002 | 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 | Measurement of fs/fu Variation with Proton-Proton Collision Energy and B-Meson Kinematics | 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 | 539 | |
| dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.124.122002 | cat |
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