Evidence for CP Violation in B+→p¯pK+ Decays
| dc.contributor | Universitat Ramon Llull. La Salle | |
| dc.contributor | CERN | |
| dc.contributor.author | Badalov, Alexey | |
| dc.contributor.author | Calvo Gómez, Míriam | |
| dc.contributor.author | Vilasís Cardona, Xavier | |
| dc.contributor.author | LHCb Collaboration - CERN | |
| dc.date.accessioned | 2020-06-19T17:40:35Z | |
| dc.date.accessioned | 2023-10-02T06:32:19Z | |
| dc.date.available | 2020-06-19T17:40:35Z | |
| dc.date.available | 2023-10-02T06:32:19Z | |
| dc.date.created | 2014 | |
| dc.date.issued | 2014-09-20 | |
| dc.identifier.uri | http://hdl.handle.net/20.500.14342/3291 | |
| dc.description.abstract | Three-body B+→p¯pK+ and B+→p¯pπ+ decays are studied using a data sample corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV. Evidence of CP violation in the B+→p¯pK+ decay is found in regions of the phase space, representing the first measurement of this kind for a final state containing baryons. Measurements of the forward-backward asymmetry of the light meson in the p¯p rest frame yield AFB(p¯pK+,mp¯p<2.85 GeV/c2)=0.495±0.012 (stat)±0.007 (syst) and AFB(p¯pπ+,mp¯p<2.85 GeV/c2)=−0.409±0.033 (stat)±0.006 (syst). In addition, the branching fraction of the decay B+→¯Λ(1520)p is measured to be B(B+→¯Λ(1520)p)=(3.15±0.48 (stat)±0.07 (syst)±0.26 (BF))×10−7, where BF denotes the uncertainty on secondary branching fractions. | eng |
| dc.format.extent | 9 p. | cat |
| dc.language.iso | eng | cat |
| dc.publisher | American Physical Society | cat |
| dc.relation.ispartof | Physical Review Letters, 2014, Vol. 113, No. 14 (Octubre) | 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.subject.other | Protons | cat |
| dc.title | Evidence for CP Violation in B+→p¯pK+ Decays | 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 | 53 | |
| dc.identifier.doi | https://doi.org/10.1103/PhysRevLett.113.141801 | cat |
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