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PUB-06/038 Evidence of a Broad Structure at an Invariant Mass of 4.32 GeV/c^2 in the Reaction e+ e- -> pi+ pi- psi(2S) Measured at BABAR
Doc Type Journal Papers
Record Created June 13, 2006
SLAC-PUB
SLAC-PUB-12155  No citations
Preprint # hep-ex/0610057
Abstract
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   We measure the cross section for the process $e^+e^-\to\pi^+\pi^-\psi(2S)$ 
   from threshold up to 8~GeV center-of-mass energy 
   using events containing initial-state radiation,
   produced at the PEP-II $e^+e^-$ storage rings. 
   The study is based on 298~fb$^{-1}$ of data recorded with the BaBar 
   detector. A structure is observed in the cross-section not far above 
   threshold, near 4.32~GeV. This structure is not compatible with 
   the $Y(4260)$ previously reported by this experiment. 
   A single resonance is adequate to describe the cross-section
   in the low-energy region ($<$5.7~GeV).


Revisions and Files 1 revised June 13, 2006
File Date
Thumbnails
File Name File Type File Format File Size (Kb) Comments
24-OCT-2006 abstract.txt Abstract txt 0.61
07-JUN-2007 babar-pub-0638-PRL.pdf Paper (journal paper or conference submission by BABAR Collaboration) pdf 219.60 Final version published in PRL 98, 212001 (2007)
07-JUN-2007 babar-pub-0638-PRL.ps.gz Paper (journal paper or conference submission by BABAR Collaboration) ps.gz 89.50 Final version published in PRL 98, 212001 (2007)
23-OCT-2006 fig1.eps Figure or plot eps 18.99 The invariant mass distribution for all pi+pi-J/psi candidates
23-OCT-2006 fig2.eps Figure or plot eps 12.53 Distributions of Delta(p*) and cos(theta*) for pi+pi-psi2S.
23-OCT-2006 fig3-tag.eps Figure or plot eps 15.71 The 2(pi+pi-)J/psi invariant mass spectrum up to 5.7 GeV with TLegend labels (presentation version)
23-OCT-2006 fig3.eps Figure or plot eps 14.85 The 2(pi+pi-)J/psi invariant mass spectrum up to 5.7 GeV
23-OCT-2006 fig4.eps Figure or plot eps 8.94 The primary pi+pi- invariant-mass spectrum for events with m(2(pi+pi-)J/psi)<5.7 GeV
23-OCT-2006 fig5.eps Figure or plot eps 13.47 Cross-sections of e+e- -> pi+pi-psi(2S) from threshold up t0 8 GeV CM energy
Submitted ToPhysical Review Letters
Date SubmittedOctober 21, 2006
Journal Year2007
Journal Volume98
Journal Article/Page Range212001
Categories
  • AWG: Charmonium