Document Detail

Measurements of H-->D-->(gamma-->,pi) and implications for the convergence of the Gerasimov-Drell-Hern integral.
MedLine Citation:
PMID:  19518773     Owner:  NLM     Status:  PubMed-not-MEDLINE    
We report new measurements of inclusive pi production from frozen-spin HD for polarized photon beams covering the Delta(1232) resonance. These provide data simultaneously on both H and D with nearly complete angular distributions of the spin-difference cross sections entering the Gerasimov-Drell-Hearn (GDH) sum rule. Recent results from Mainz and Bonn exceed the GDH prediction for the proton by 22 microb, suggesting as yet unmeasured high-energy components. Our pi0 data reveal a different angular dependence than assumed in Mainz analyses and integrate to a value that is 18 microb lower, suggesting a more rapid convergence. Our results for deuterium are somewhat lower than published data, considerably more precise, and generally lower than available calculations.
S Hoblit; A M Sandorfi; K Ardashev; C Bade; O Bartalini; M Blecher; A Caracappa; A D'Angelo; A d'Angelo; R Di Salvo; A Fantini; C Gibson; H Glückler; K Hicks; A Honig; T Kageya; M Khandaker; O C Kistner; S Kizilgul; S Kucuker; A Lehmann; M Lowry; M Lucas; J Mahon; L Miceli; D Moricciani; B Norum; M Pap; B Preedom; H Seyfarth; C Schaerf; H Ströher; C E Thorn; C S Whisnant; K Wang; X Wei;
Related Documents :
17214453 - Effects of proximity on the relaxation dynamics of flindersine and 6(5h)-phenanthridinone.
21674353 - Functional integration of membrane proteins with nanotube and nanowire transistor devices.
25328503 - Formation of self-organized zircaloy-4 oxide nanotubes in organic viscous electrolyte v...
Publication Detail:
Type:  Journal Article     Date:  2009-04-30
Journal Detail:
Title:  Physical review letters     Volume:  102     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2009 May 
Date Detail:
Created Date:  2009-06-12     Completed Date:  2009-07-01     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  172002     Citation Subset:  -    
Department of Physics, University of Virginia, Charlottesville, Virginia 22901, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Towards a dynamical understanding of the non-DD decay of psi(3770).
Next Document:  Partonic pole matrix elements for fragmentation.