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DC Field | Value | Language |
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dc.contributor.author | Alfonso Albero, Alejandro | - |
dc.contributor.author | Calvo Gómez, Míriam | - |
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 | Gironella Gironell, Pere | - |
dc.contributor.author | Graciani Díaz, Ricardo | - |
dc.contributor.author | Graugés Pous, Eugeni | - |
dc.contributor.author | Vilasis-Cardona, Xavier | - |
dc.contributor.author | LHCb Collaboration | - |
dc.date.accessioned | 2020-10-05T13:36:17Z | - |
dc.date.available | 2020-10-05T13:36:17Z | - |
dc.date.issued | 2019-06-14 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/170962 | - |
dc.description.abstract | We report a measurement of the mass difference between neutral charm-meson eigenstates using a novel approach that enhances sensitivity to this parameter. We use 2.3 × 10 6 D 0 → K 0 S π + π − decays reconstructed in proton-proton collisions collected by the LHCb experiment in 2011 and 2012. Allowing for C P violation in mixing and in the interference between mixing and decay, we measure the C P -averaged normalized mass difference x C P = [ 2.7 ± 1.6 ( stat ) ± 0.4 ( syst ) ] × 10 − 3 and the C P -violating parameter Δ x = [ − 0.53 ± 0.70 ( stat ) ± 0.22 ( syst ) ] × 10 − 3 . The results are consistent with C P symmetry. These determinations are the most precise from a single experiment and, combined with current world-average results, yield the first evidence that the masses of the neutral charm-meson eigenstates differ. | - |
dc.format.extent | 10 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/PhysRevLett.122.231802 | - |
dc.relation.ispartof | Physical Review Letters, 2019, vol. 122, num. 23, p. 231802 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.122.231802 | - |
dc.rights | cc-by (c) Alfonso et. al. ,2019 | - |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ | * |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Bosons | - |
dc.subject.classification | Mesons (Física nuclear) | - |
dc.subject.other | Bosons | - |
dc.subject.other | Mesons (Nuclear physics) | - |
dc.title | Measurement of the Mass Difference Between Neutral Charm-Meson Eigenstates | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 694499 | - |
dc.date.updated | 2020-10-05T13:36:18Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/H2020/792684/EU//pANUCSTR | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
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File | Description | Size | Format | |
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694499.pdf | 1.07 MB | Adobe PDF | View/Open |
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