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Observation of the Υ(1^{3}D_{J}) bottomonium state through decays to π^{+}π^{-}Υ(1S)

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del Amo Sanchez, P., Lees, J., Poireau, V., Prencipe, E., Tisserand, V., Garra Tico, J., Grauges, E., Martinelli, M., Palano, A., Pappagallo, M. et al.
(2010) Observation of the Υ(1^{3}D_{J}) bottomonium state through decays to π^{+}π^{-}Υ(1S). Physical Review D (Particles, Fields, Gravitation and Cosmology), Vol.82 (No.11). article no. 111102(R) . doi:10.1103/PhysRevD.82.111102

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Official URL: http://dx.doi.org/10.1103/PhysRevD.82.111102

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Abstract

Based on 122×106Υ(3S) events collected with the BABAR detector, we have observed the Υ(13DJ) bottomonium state through the Υ(3S)→γγΥ(13DJ)→γγπ+π-Υ(1S) decay chain. The significance for the J=2 member of the Υ(13DJ) triplet is 5.8 standard deviations including systematic uncertainties. The mass of the J=2 state is determined to be 10 164.5±0.8(stat)±0.5(syst)  MeV/c2. We use the π+π- invariant mass distribution to confirm the consistency of the observed state with the orbital angular momentum assignment of the Υ(13DJ).

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science > Physics
Journal or Publication Title: Physical Review D (Particles, Fields, Gravitation and Cosmology)
Publisher: American Physical Society
ISSN: 1550-7998
Official Date: 22 December 2010
Dates:
DateEvent
22 December 2010Published
Volume: Vol.82
Number: No.11
Number of Pages: 7
Page Range: article no. 111102(R)
DOI: 10.1103/PhysRevD.82.111102
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access
Funder: DOE , NSF (USA) , NSERC (Canada) , CEA , CNRS-IN2P3 (France) , BMBF , DFG (Germany) , INFN (Italy) , FOM (The Netherlands) , NFR (Norway) , MES (Russia) , MEC (Spain) , STFC (United Kingdom) , Marie Curie EIF (European Union) , A. P. Sloan Foundation

Data sourced from Thomson Reuters' Web of Knowledge

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