Skip navigation
   
 
Scholarly Communication
Contacts

The decay constant of the first excited pion from lattice QCD

McNeile, C. and Michael, C. (2006) The decay constant of the first excited pion from lattice QCD. Physics Letters B, 642 (3). pp. 244-247. ISSN 0370-2693

[img]
Preview
PDF
124Kb
[img]
Preview
Postscript (Requires a viewer, such as GSview)
197Kb

Official URL: http://www.elsevier.com/wps/find/journaldescriptio...

Abstract

We review the theory that predicts that the decay constant of the excited light pseudo-scalar mesons are suppressed in the chiral limit relative to the pion decay constant. We compute the decay constant of the first excited pion ($\pi^\prime$) using unquenched QCD at a fixed lattice spacing with sea quarks of mass as low as a third the mass of the strange quark. The final result is very sensitive to the improvement conditions. We obtain $f_{\pi^\prime} / f_{\pi}$ = 0.078(93) in the chiral limit.

Item Type:Article
Additional Information:LTH 707. arXiv Number: arXiv:hep-lat/0607032v2. Available online 11 October 2006. Issue: 9 November 2006.
Uncontrolled Keywords:QUARK MASSES; SUM-RULES; RENORMALIZATION
Subjects:Q Science > QC Physics
Departments, Research Centres and Related Units:Academic Faculties, Institutes and Research Centres > Faculty of Science > Department of Mathematical Sciences
DOI:10.1016/j.physletb.2006.09.056
Related URLs:
Refereed:No
Status:Published
ID Code:101
Deposited On:10 Oct 2007 13:06
Last Modified:20 May 2011 19:37

Repository Staff Only: item control page

   
Search


Full text only
Peer reviewed only

Browse
Cross Archive Search
Find
Top 50 authors
Top 50 items
[more statistics]
 
   

These pages are maintained by Library Staff @ University of Liverpool Library

 

All pages © The University of Liverpool, 2004 | Disclaimer | Accessibility | Staff | Students