Search for Violations of Lorentz Invariance and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>C</mml:mi><mml:mi>P</mml:mi><mml:mi>T</mml:mi></mml:math>Symmetry in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi>B</mml:mi></mml:mrow><mml:mrow><mml:mo stretchy="false">(</mml:mo><mml:mi>s</mml:mi><mml:mo stretchy="false">)</mml:mo></mml:mrow><mml:mrow><mml:mn>0</mml:mn></mml:mrow></mml:msubsup></mml:mrow></mml:math>Mixing
R. AaijEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandC. Abellán BetetaPhysik-Institut, Universität Zürich, Zürich, SwitzerlandB. AdevaUniversidad de Santiago de Compostela, Santiago de Compostela, SpainM. AdinolfiH. H. Wills Physics Laboratory, University of Bristol, Bristol, United KingdomZ. AjaltouniClermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceS. AkarCPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, FranceJ. AlbrechtFakultät Physik, Technische Universität Dortmund, Dortmund, GermanyF. AlessioEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandM. AlexanderSchool of Physics and Astronomy, University of Glasgow, Glasgow, United KingdomS. AliNikhef National Institute for Subatomic Physics, Amsterdam, The NetherlandsG. AlkhazovPetersburg Nuclear Physics Institute (PNPI), Gatchina, RussiaP. Álvarez CartelleImperial College London, London, United KingdomA. A. AlvesUniversity of Cincinnati, Cincinnati, Ohio, United StatesS. AmatoUniversidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, BrazilS. AmerioSezione INFN di Padova, Padova, ItalyY. AmhisLAL, Université Paris-Sud, CNRS/IN2P3, Orsay, FranceL. AnCenter for High Energy Physics, Tsinghua University, Beijing, ChinaG. AndreassiEcole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandM. AndreottiSezione INFN di Ferrara, Ferrara, ItalyJ. E. AndrewsUniversity of Maryland, College Park, Maryland, United StatesR. B. ApplebySchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomO. Aquines GutierrezMax-Planck-Institut für Kernphysik (MPIK), Heidelberg, GermanyF. ArchilliEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandP. d’ArgentPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyA. ArtamonovInstitute for High Energy Physics (IHEP), Protvino, RussiaM. ArtusoSyracuse University, Syracuse, New York, United StatesE. AslanidesCPPM, Aix-Marseille Université, CNRS/IN2P3, Marseille, FranceG. AuriemmaSezione INFN di Roma La Sapienza, Roma, ItalyM. BaalouchClermont Université, Université Blaise Pascal, CNRS/IN2P3, LPC, Clermont-Ferrand, FranceS. BachmannPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyJ. J. BackDepartment of Physics, University of Warwick, Coventry, United KingdomA. BadalovUniversitat de Barcelona, Barcelona, SpainC. BaessoPontifícia Universidade Católica do Rio de Janeiro (PUC-Rio), Rio de Janeiro, Brazil (associated with Universidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil)S. BakerImperial College London, London, United KingdomW. BaldiniSezione INFN di Ferrara, Ferrara, ItalyR. J. BarlowSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomC. BarschelEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandS. BarsukLAL, Université Paris-Sud, CNRS/IN2P3, Orsay, FranceW. BarterEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandV. BatozskayaNational Center for Nuclear Research (NCBJ), Warsaw, PolandV. BattistaEcole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandA. BayEcole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandL. BeaucourtLAPP, Université Savoie Mont-Blanc, CNRS/IN2P3, Annecy-Le-Vieux, FranceJ. BeddowSchool of Physics and Astronomy, University of Glasgow, Glasgow, United KingdomF. BedeschiSezione INFN di Pisa, Pisa, ItalyI. BediagaCentro Brasileiro de Pesquisas Físicas (CBPF), Rio de Janeiro, BrazilL. J. BelNikhef National Institute for Subatomic Physics, Amsterdam, The NetherlandsV. BelléeEcole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandN. BelloliSezione INFN di Milano Bicocca, Milano, ItalyI. BelyaevInstitute of Theoretical and Experimental Physics (ITEP), Moscow, RussiaE. Ben-HaimLPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, FranceG. BencivenniLaboratori Nazionali dell'INFN di Frascati, Frascati, ItalyS. BensonEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandJ. BentonH. H. Wills Physics Laboratory, University of Bristol, Bristol, United KingdomR. BernetInstitute of Nuclear Physics, Moscow State University (SINP MSU), Moscow, RussiaA. BertolinSezione INFN di Padova, Padova, ItalyF. BettiSezione INFN di Bologna, Bologna, ItalyM.-O. BettlerEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandM. van BeuzekomNikhef National Institute for Subatomic Physics, Amsterdam, The NetherlandsS. BifaniUniversity of Birmingham, Birmingham, United KingdomP. BilloirLPNHE, Université Pierre et Marie Curie, Université Paris Diderot, CNRS/IN2P3, Paris, FranceT. BirdSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomA. BirnkrautFakultät Physik, Technische Universität Dortmund, Dortmund, GermanyA. BizzetiSezione INFN di Firenze, Firenze, ItalyT. BlakeDepartment of Physics, University of Warwick, Coventry, United KingdomF. BlancEcole Polytechnique Fédérale de Lausanne (EPFL), Lausanne, SwitzerlandJ. BlouwMax-Planck-Institut für Kernphysik (MPIK), Heidelberg, GermanyS. BluskSyracuse University, Syracuse, New York, United StatesV. BocciSezione INFN di Roma La Sapienza, Roma, ItalyA. BondarBudker Institute of Nuclear Physics (SB RAS) and Novosibirsk State University, Novosibirsk, RussiaN. BondarEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandW. BoniventoSezione INFN di Cagliari, Cagliari, ItalyA. BorgheresiSezione INFN di Milano Bicocca, Milano, ItalyS. BorghiSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomM. BorisyakYandex School of Data Analysis, Moscow, Russia (associated with Institute of Theoretical and Experimental Physics (ITEP), Moscow, Russia)M. BorsatoUniversidad de Santiago de Compostela, Santiago de Compostela, SpainM. BoubdirI. Physikalisches Institut, RWTH Aachen University, Aachen, GermanyT. J. V. BowcockOliver Lodge Laboratory, University of Liverpool, Liverpool, United KingdomE. BowenPhysik-Institut, Universität Zürich, Zürich, SwitzerlandC. BozziEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandS. BraunPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyM. BritschPhysikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Heidelberg, GermanyT. BrittonSyracuse University, Syracuse, New York, United StatesJ. BrodzickaSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomE. BuchananH. H. Wills Physics Laboratory, University of Bristol, Bristol, United KingdomC. BurrSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomA. BurscheUniversidade Federal do Rio de Janeiro (UFRJ), Rio de Janeiro, BrazilJ. BuytaertEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandS. CadedduSezione INFN di Cagliari, Cagliari, ItalyR. CalabreseSezione INFN di Ferrara, Ferrara, ItalyM. CalviSezione INFN di Milano Bicocca, Milano, ItalyM. Calvo GomezUniversitat de Barcelona, Barcelona, SpainP. CampanaLaboratori Nazionali dell'INFN di Frascati, Frascati, ItalyD. H. Cámpora PérezEuropean Organization for Nuclear Research (CERN), Geneva, SwitzerlandL. CapriottiSchool of Physics and Astronomy, University of Manchester, Manchester, United KingdomA. CarboneSezione INFN di Bologna, Bologna, ItalyG. CarboniSezione INFN di Roma Tor Vergata, Roma, ItalyR. CardinaleSezione INFN di Genova, Genova, Italy
2016lv
ABI
Аннотация
Violations of CPT symmetry and Lorentz invariance are searched for by studying interference effects in B^{0} mixing and in B_{s}^{0} mixing. Samples of B^{0}→J/ψK_{S}^{0} and B_{s}^{0}→J/ψK^{+}K^{-} decays are recorded by the LHCb detector in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, corresponding to an integrated luminosity of 3 fb^{-1}. No periodic variations of the particle-antiparticle mass differences are found, consistent with Lorentz invariance and CPT symmetry. Results are expressed in terms of the standard model extension parameter Δa_{μ} with precisions of O(10^{-15}) and O(10^{-14}) GeV for the B^{0} and B_{s}^{0} systems, respectively. With no assumption on Lorentz (non)invariance, the CPT-violating parameter z in the B_{s}^{0} system is measured for the first time and found to be Re(z)=-0.022±0.033±0.005 and Im(z)=0.004±0.011±0.002, where the first uncertainties are statistical and the second systematic.
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