First observation of the decay B0s -> K*0 anti-K*0
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(6)
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R. Aaij
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A. Dosil Suárez
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V. Egorychev
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M. Gandelman
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P. Gandini
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Y. Gao
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J. Garofoli
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J. Garra Tico
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L. Garrido
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C. Gaspar
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N. Gauvin
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M. Gersabeck
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T. Gershon
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A. Giachero
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V. Gibson
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V. V. Gligorov
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C. Göbel
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D. Golubkov
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A. Golutvin
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A. Gomes
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H. Gordon
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M. Grabalosa Gándara
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R. Graciani Diaz
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L. A. Granado Cardoso
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E. Graugés
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G. Graziani
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A. Grecu
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E. Greening
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S. Gregson
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B. Gui
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E. Gushchin
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K. Hennessy
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J. A. Hernando Morata
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P. Hunt
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T. Huse
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R. S. Huston
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D. Hutchcroft
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D. Hynds
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P. Ilten
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J. Imong
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R. Jacobsson
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A. Jaeger
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E. Jans
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F. Jansen
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P. Jaton
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F. Jing
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M. John
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D. Johnson
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C. R. Jones
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B. Jost
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M. Kaballo
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S. Kandybei
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M. Karacson
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T. M. Karbach
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J. Keaveney
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U. Kerzel
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T. Ketel
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A. Keune
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B. Khanji
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Y. M. Kim
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M. Knecht
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P. Koppenburg
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A. Kozlinskiy
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L. Kravchuk
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K. Kreplin
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M. Kreps
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G. Krocker
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P. Krokovny
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F. Kruse
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K. Kruzelecki
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M. Kucharczyk
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R. Kumar
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T. Kvaratskheliya
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V. N. La Thi
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D. Lacarrere
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G. Lafferty
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A. Lai
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D. Lambert
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R. W. Lambert
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E. Lanciotti
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G. Lanfranchi
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C. Langenbruch
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A. Leflat
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T. Lesiak
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R. Lindner
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N. Lopez-March
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J. Luisier
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F. Maciuc
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O. Maev
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J. Magnin
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S. Malde
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R. M. D. Mamunur
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G. Manca
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N. Mangiafave
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U. Marconi
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R. Märki
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J. Marks
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G. Martellotti
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A. Martens
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D. Martinez Santos
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A. Massafferri
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C. Matteuzzi
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M. Matveev
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A. Pazos Alvarez
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A. Pellegrino
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G. Penso
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M. Pepe Altarelli
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S. Perazzini
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D. L. Perego
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E. Perez Trigo
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A. Pérez-Calero Yzquierdo
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Pascal Perret
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M. Perrin-Terrin
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A. Petrella
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B. Rakotomiaramanana
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M. S. Rangel
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I. Raniuk
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G. Raven
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S. Redford
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M. M. Reid
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A. C. Dos Reis
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S. Ricciardi
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K. Rinnert
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E. Rodrigues
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F. Rodrigues
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M. Rosello
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N. Sagidova
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B. Saitta
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C. Salzmann
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M. Sannino
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M. Sapunov
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A. Sarti
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- IdHAL : alessandro-sarti
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C. Satriano
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A. Satta
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M. Savrie
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D. Savrina
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P. Schaack
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M. Schiller
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S. Schleich
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M. Schmelling
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B. Schmidt
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O. Schneider
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A. Schopper
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R. Schwemmer
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B. Sciascia
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A. Sciubba
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M. Seco
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A. Semennikov
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K. Senderowska
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I. Sepp
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N. Serra
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J. Serrano
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- PersonId : 175327
- IdHAL : justine-serrano
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P. Seyfert
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B. Shao
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M. Shapkin
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I. Shapoval
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P. Shatalov
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Y. Shcheglov
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T. Shears
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L. Shekhtman
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O. Shevchenko
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V. Shevchenko
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A. Shires
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R. Silva Coutinho
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H. P. Skottowe
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T. Skwarnicki
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A. C. Smith
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N. A. Smith
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E. Smith
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F. J. P. Soler
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A. Solomin
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F. Soomro
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B. Souza de Paula
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B. Spaan
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A. Sparkes
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P. Spradlin
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F. Stagni
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S. Stahl
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O. Steinkamp
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S. Stoica
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S. Stone
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B. Storaci
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M. Straticiuc
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U. Straumann
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N. Styles
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V. K. Subbiah
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S. Swientek
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M. Szczekowski
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P. Szczypka
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T. Szumlak
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S. t'Jampens
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- IdHAL : stephane-tjampens
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E. Teodorescu
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F. Teubert
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C. Thomas
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E. Thomas
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J. van Tilburg
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M. Tobin
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S. Topp-Joergensen
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N. Torr
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M. T. Tran
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A. Tsaregorodtsev
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N. Tuning
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M. Ubeda Garcia
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P. Urquijo
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V. Vagnoni
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P. Vazquez Regueiro
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M. Veltri
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K. Vervink
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X. Vilasis-Cardona
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J. Visniakov
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A. Vollhardt
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D. Voong
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A. Vorobyev
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H. Voss
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K. Wacker
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S. Wandernoth
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J. Wang
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D. R. Ward
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A. D. Webber
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D. Websdale
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M. Whitehead
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D. Wiedner
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L. Wiggers
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G. Wilkinson
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M. P. Williams
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M. Williams
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F. F. Wilson
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J. Wishahi
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M. Witek
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W. Witzeling
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S. A. Wotton
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K. Wyllie
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Y. Xie
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F. Xing
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Z. Xing
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Z. Yang
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R. Young
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O. Yushchenko
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M. Zavertyaev
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F. Zhang
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- PersonId : 755456
- ORCID : 0000-0002-5172-0783
W. C. Zhang
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Y. Zhang
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A. Zhelezov
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L. Zhong
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E. Zverev
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A. Zvyagin
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Abstract
The first observation of the decay Bs0 -> K*0 anti-K*0 is reported using 35 pb^{-1} of data collected by LHCb in proton-proton collisions at a centre-of-mass energy of 7 TeV. A total of 49.8 \pm 7.5 signal events are observed, with a significance of 10.9 sigma. The branching fraction and the CP-averaged K*0 longitudinal polarization fraction are measured to be BR(Bs0 -> K*0 anti-K*0) = (2.81 \pm 0.46 (stat.) \pm 0.45 (syst.) \pm 0.34 (f_s/f_d))x10^{-5} and f_L = 0.31 \pm 0.12 (stat.) \pm 0.04 (syst.).