Observation of Bs -&gt; J/ψf'2(1525) in J/ψK+K- final states
Creators: name: LHCb Collaboration
name: Aaij, R.
name: Beteta, C. Abellan
name: Adeva, B.
name: Adinolfi, M.
name: Adrover, C.
name: Affolder, A.
name: Ajaltouni, Z.
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name: Alkhazov, G.
name: Cartelle, P. Alvarez
name: Alves, A. A.
name: Amato, S.
name: Amhis, Y.
name: Anderson, J.
name: Appleby, R. B.
name: Gutierrez, O. Aquines
name: Archilli, F.
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name: Artamonov, A.
name: Artuso, M.
name: Aslanides, E.
name: Auriemma, G.
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name: Bencivenni, G.
name: Benson, S.
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name: Bozzi, C.
name: Brambach, T.
name: Brand, J. van den
name: Bressieux, J.
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name: Britsch, M.
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Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The decay Bs -&gt; J/ψK+ K- is investigated using 0.16/fb of data collected with the LHCb detector using 7 TeV pp collisions. Although the J/ψϕ channel is well known, final states at higher K+K- masses have not previously been studied. In the K+K- mass spectrum we observe a significant signal in the f'2(1525) region as well as a non-resonant component. After subtracting the non-resonant component, we find B(Bs-&gt;J/ψf'_2(1525))/B(Bs-&gt;J/ψϕ)=(26.4 +/- 2.7 +/- 2.4)%.
description: 7 pages, 5 figures, v2 many revisions, submitted to PRL