First measurement of time-dependent CP violation in B0s→K+K− decays

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RECERCAT Home > Universitat de Barcelona > Institut de Ciències del Cosmos (ICCUB) > Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) > View document

To access the full text documents, please follow this link: http://hdl.handle.net/2445/56384

dc.contributor	Universitat de Barcelona
dc.contributor.author	Calvo Gómez, Míriam
dc.contributor.author	Camboni, Alessandro
dc.contributor.author	Comerma Montells, Albert
dc.contributor.author	Garrido Beltrán, Lluís
dc.contributor.author	Graciani Díaz, Ricardo
dc.contributor.author	Graugés Pous, Eugeni
dc.contributor.author	Oyanguren Campos, Arantza de
dc.contributor.author	Pérez-Calero Yzquierdo, Antonio
dc.contributor.author	Picatoste Olloqui, Eduardo
dc.contributor.author	Potterat, Cédric
dc.contributor.author	Rives Molina, Vicente José
dc.contributor.author	Ruiz, Hugo (Ruiz Pérez)
dc.contributor.author	Ruiz Valls, Pablo
dc.contributor.author	Vilasis-Cardona, Xavier
dc.contributor.author	LHCb Collaboration
dc.date	2014-07-29T07:20:32Z
dc.date	2014-09-05T22:02:14Z
dc.date	2013-10
dc.date	2014-07-29T07:20:32Z
dc.identifier.citation	1126-6708
dc.identifier.citation	631643
dc.identifier.uri	http://hdl.handle.net/2445/56384
dc.format	26 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Springer Verlag
dc.relation	Reproducció del document publicat a: http://dx.doi.org/10.1007/JHEP10(2013)183
dc.relation	Journal of High Energy Physics, 2013, vol. 183, p. 1-26
dc.relation	http://dx.doi.org/10.1007/JHEP10(2013)183
dc.rights	cc by (c) LHCb Collaboration, 2013
dc.rights	info:eu-repo/semantics/openAccess
dc.rights	http://creativecommons.org/licenses/by/3.0/
dc.subject	Partícules (Física nuclear)
dc.subject	Simetria (Física)
dc.subject	Cromodinàmica quàntica
dc.subject	Particles (Nuclear physics)
dc.subject	Symmetry (Physics)
dc.subject	Quantum chromodynamics
dc.subject	Violació CP (Física nuclear)
dc.title	First measurement of time-dependent CP violation in B0s→K+K− decays
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.abstract	Direct and mixing-induced CP-violating asymmetries in B0s→K+K− decays are measured for the first time using a data sample of pp collisions, corresponding to an integrated luminosity of 1.0 fb−1, collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C KK = 0.14 ± 0.11 ± 0.03 and S KK = 0.30 ± 0.12 ± 0.04, where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B 0 → π + π − decays to be C ππ = −0.38 ± 0.15 ± 0.02 and S ππ = −0.71 ± 0.13 ± 0.02, in good agreement with existing measurements.

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