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http://hdl.handle.net/2445/186426
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DC Field | Value | Language |
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dc.contributor.author | Calvo Gomez, M. | - |
dc.contributor.author | Camboni, Alessandro | - |
dc.contributor.author | Coquereau, Samuel | - |
dc.contributor.author | Garrido Beltrán, Lluís | - |
dc.contributor.author | Gascón Fora, David | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Marin Benito, Carla | - |
dc.contributor.author | Picatoste Olloqui, Eduardo | - |
dc.contributor.author | Rives Molina, Vicente José | - |
dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Gironella Gironell, P. | - |
dc.contributor.author | Vazquez Gomez, R. | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2022-06-07T16:11:19Z | - |
dc.date.available | 2022-06-07T16:11:19Z | - |
dc.date.issued | 2017-04 | - |
dc.identifier.issn | 2470-0010 | - |
dc.identifier.uri | http://hdl.handle.net/2445/186426 | - |
dc.description.abstract | A search for a long-lived scalar particle χ is performed, looking for the decay B+→K+χ with χ →μ+μ- in p p collision data corresponding to an integrated luminosity of 3 fb-1 , collected by the LHCb experiment at center-of-mass energies of √{s }=7 and 8 TeV. This new scalar particle, predicted by hidden sector models, is assumed to have a narrow width. The signal would manifest itself as an excess in the dimuon invariant mass distribution over the Standard Model background. No significant excess is observed in the accessible ranges of mass 250 <m (χ )<4700 MeV /c2 and lifetime 0.1 <τ (χ )<1000 ps . Upper limits on the branching fraction B (B+→K+χ (μ+μ- )) at 95% confidence level are set as a function of m (χ ) and τ (χ ), varying between 2 ×10-10 and 10-7. These are the most stringent limits to date. The limits are interpreted in the context of a model with a light inflaton particle. | - |
dc.format.extent | 15 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | American Physical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.95.071101 | - |
dc.relation.ispartof | Physical Review D, 2017, vol. 95, num. 071101, p. 1-15 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevD.95.071101 | - |
dc.rights | (c) American Physical Society, 2017 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Hadrons | - |
dc.subject.classification | Gran Col·lisionador d'Hadrons | - |
dc.subject.classification | Física de partícules | - |
dc.subject.classification | Experiments | - |
dc.subject.other | Hadrons | - |
dc.subject.other | Large Hadron Collider (France and Switzerland) | - |
dc.subject.other | Particle physics | - |
dc.subject.other | Experiments | - |
dc.title | Search for long-lived scalar particles in B+→K+χ (μ+μ-) decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 677991 | - |
dc.date.updated | 2022-06-07T16:11:20Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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677991.pdf | 1.01 MB | Adobe PDF | View/Open |
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