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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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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 th...

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Main Authors: Amo Sanchez, Pablo del (Author) , Adametz, Aleksandra (Author) , Marks, Jörg (Author) , Schenk, Sebastian (Author) , Uwer, Ulrich (Author) , Hartmann, Thomas (Author) , Leddig, Torsten (Author) , Schröder, Henning (Author) , Waldi, Roland (Author)
Corporate Author: BABAR Collaboration (Author)
Format: Article (Journal)
Language:English
Published: 22 December 2010
In: Physical review. D, Particles, fields, gravitation, and cosmology
Year: 2010, Volume: 82, Issue: 11, Pages: 1-7
ISSN:1550-2368
DOI:10.1103/PhysRevD.82.111102
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevD.82.111102
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevD.82.111102
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Author Notes:BABAR Collaboration
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Summary: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 Description:Im Titel ist die Zahl "3" hochgestellt und der Buchstabe "J" tiefgestellt. Plus- und das Minuszeichen sind hochgestellt
BABAR Collaboration: P. del Amo Sanchez, A. Adametz, J. Marks, S. Schenk, U. Uwer, T. Hartmann, T. Leddig, H. Schröder, R. Waldi [und viele weitere]
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Physical Description:Online Resource
ISSN:1550-2368
DOI:10.1103/PhysRevD.82.111102

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