BABAR Publications

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PUB-11/005 Study of di-pion bottomonium transitions and search for the h_b(1P) state
Doc Type Journal Papers
Record Created January 29, 2011
SLAC-PUB
SLAC-PUB-14470  No citations
Preprint # 1105.4234
Accession Code DER1056
First Author Lees
Abstract
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We study inclusive di-pion decays using a sample of 108 x 10^6
Upsilon(3S) events recorded with the BABAR detector. 
We search for the decay mode Upsilon(3S) --> pi+ pi- h_b(1P) and find 
no evidence for the bottomonium spin-singlet state h_b(1P) in the invariant 
mass distribution recoiling against the pi+ pi- system.
Assuming the h_b(1P) mass to be 9.900 GeV/c^2, we measure 
the upper limit on the branching fraction 
B[Upsilon(3S) --> pi+ pi- h_b(1P)] < 1.2 x 10^{-4}, at 
90% confidence level. 
We also investigate the chi_{bJ}(2P) --> pi+ pi- chi_{bJ}(1P), 
Upsilon(3S) --> pi+ pi- Upsilon(2S), and Upsilon(2S) --> pi+ pi- Upsilon(1S) 
di-pion transitions and present an improved measurement of the branching 
fraction of the Upsilon(3S) --> pi+ pi- Upsilon(2S) decay and of the 
Upsilon(3S)-Upsilon(2S) mass difference. 


Revisions and Files 1 revised January 29, 2011
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
25-MAY-2011 abstract.txt Abstract txt 0.81
24-MAY-2011 fig01.eps Figure or plot eps 60.16
24-MAY-2011 fig02.eps Figure or plot eps 50.61
24-MAY-2011 fig03.eps Figure or plot eps 17.71
25-MAY-2011 fig04.eps Figure or plot eps 19.61
Submitted ToPhysical Review D
Date SubmittedMay 24, 2011
Journal Year2011
Journal Volume84
Journal Article/Page Range011104
Categories
  • AWG: Charmonium