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http://hdl.handle.net/2445/170964
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DC Field | Value | Language |
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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 | 2020-10-05T14:38:23Z | - |
dc.date.available | 2020-10-05T14:38:23Z | - |
dc.date.issued | 2019-05-29 | - |
dc.identifier.issn | 0031-9007 | - |
dc.identifier.uri | http://hdl.handle.net/2445/170964 | - |
dc.description.abstract | A search for charge-parity ( C P ) violation in D 0 → K − K + and D 0 → π − π + decays is reported, using p p collision data corresponding to an integrated luminosity of 5.9 fb − 1 collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the charm meson is inferred from the charge of the pion in D ∗ ( 2010 ) + → D 0 π + decays or from the charge of the muon in ¯ B → D 0 μ − ¯ ν μ X decays. The difference between the C P asymmetries in D 0 → K − K + and D 0 → π − π + decays is measured to be Δ A C P = [ − 18.2 ± 3.2 ( stat ) ± 0.9 ( syst ) ] × 10 − 4 for π -tagged and Δ A C P = [ − 9 ± 8 ( stat ) ± 5 ( syst ) ] × 10 − 4 for μ -tagged D 0 mesons. Combining these with previous LHCb results leads to Δ A C P = ( − 15.4 ± 2.9 ) × 10 − 4 , where the uncertainty includes both statistical and systematic contributions. The measured value differs from zero by more than 5 standard deviations. This is the first observation of C P violation in the decay of charm hadrons. | - |
dc.format.extent | 12 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.122.211803 | - |
dc.relation.ispartof | Physical Review Letters, 2019, vol. 122, num. 21, p. 211803 | - |
dc.relation.uri | https://doi.org/10.1103/PhysRevLett.122.211803 | - |
dc.rights | cc-by (c) Calvo 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 | Violació CP (Física nuclear) | - |
dc.subject.classification | Hadrons | - |
dc.subject.other | CP violation (Nuclear physics) | - |
dc.subject.other | Hadrons | - |
dc.title | Observation of CP Violation in Charm Decays | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 694510 | - |
dc.date.updated | 2020-10-05T14:38:23Z | - |
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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