Measurement of CP asymmetries and polarisation fractions in B-s(0) -> K*(0)(K)over-bar*(0) decays

Vista senzilla d'ítem
dc.contributor.authorCasanova Mohr, R.
dc.contributor.authorGarrido Beltrán, Lluís
dc.contributor.authorGascón Fora, David
dc.contributor.authorGraciani Diaz, Ricardo
dc.contributor.authorGraugés Pous, Eugeni
dc.contributor.authorMarin Benito, Carla
dc.contributor.authorPicatoste Olloqui, Eduardo
dc.contributor.authorRives Molina, Vicente José
dc.contributor.authorRuiz, Hugo (Ruiz Pérez)
dc.contributor.authorLHCb Collaboration
dc.date.accessioned2022-05-17T15:43:06Z
dc.date.available2022-05-17T15:43:06Z
dc.date.issued2015-07-30
dc.date.updated2022-05-17T15:43:07Z
dc.description.abstractAn angular analysis of the decay B0 s → K∗0K∗0 is performed using pp collisions corresponding to an integrated luminosity of 1.0 fb−1 collected by the LHCb experiment at a centre-of-mass energy √ s = 7 TeV. A combined angular and mass analysis separates six helicity amplitudes and allows the measurement of the longitudinal polarisation fraction fL = 0.201 ± 0.057 (stat.) ± 0.040 (syst.) for the B0 s → K∗ (892)0K∗ (892)0 decay. A large scalar contribution from the K∗ 0 (1430) and K∗ 0 (800) resonances is found, allowing the determination of additional CP asymmetries. Triple product and direct CP asymmetries are determined to be compatible with the Standard Model expectations. The branching fraction B(B0 s → K∗ (892)0K∗ (892)0 ) is measured to be (10.8 ± 2.1 (stat.) ± 1.4 (syst.) ± 0.6 (fd/fs)) × 10−6 .
dc.format.extent30 p.
dc.format.mimetypeapplication/pdf
dc.identifier.idgrec656771
dc.identifier.issn1126-6708
dc.identifier.urihttps://hdl.handle.net/2445/185723
dc.language.isoeng
dc.publisherSpringer Verlag
dc.relation.isformatofReproducció del document publicat a: https://doi.org/10.1007/JHEP07(2015)166
dc.relation.ispartofJournal of High Energy Physics, 2015, vol. 2015, num. 166, p. 1-30
dc.relation.urihttps://doi.org/10.1007/JHEP07(2015)166
dc.rightscc-by (c) Casanova Mohr, R. et al., 2015
dc.rights.accessRightsinfo:eu-repo/semantics/openAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceArticles publicats en revistes (Física Quàntica i Astrofísica)
dc.subject.classificationHadrons
dc.subject.classificationGran Col·lisionador d'Hadrons
dc.subject.classificationFísica de partícules
dc.subject.classificationExperiments
dc.subject.otherHadrons
dc.subject.otherLarge Hadron Collider (France and Switzerland)
dc.subject.otherParticle physics
dc.subject.otherExperiments
dc.titleMeasurement of CP asymmetries and polarisation fractions in B-s(0) -> K*(0)(K)over-bar*(0) decays
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion

Fitxers

Paquet original

Mostrant 1 - 1 de 1
Miniatura
Nom:
656771.pdf
Mida:
737.2 KB
Format:
Adobe Portable Document Format
Descarregar

Col·leccions

Articles publicats en revistes (Física Quàntica i Astrofísica)