Please note that eDoc will be permanently shut down in the first quarter of 2021!      Home News About Us Contact Contributors Disclaimer Privacy Policy Help FAQ

Home
Search
Quick Search
Advanced
Fulltext
Browse
Collections
Persons
My eDoc
Session History
Login
Name:
Password:
Documentation
Help
Support Wiki
Direct access to
document ID:


          Institute: MPI für Physik     Collection: MPI für Physik     Display Documents



ID: 545089.0, MPI für Physik / MPI für Physik
A strategy to study the role of the charm quark in explaining the Delta{I}=1/2 rule
Authors:Giusti, L.; Hernandez, P.; Laine, M.; Weisz, P.; Wittig, H.
Date of Publication (YYYY-MM-DD):2004
Title of Journal:Journal of High Energy Physics
Journal Abbrev.:JHEP
Issue / Number:0411
Start Page:016
Audience:Not Specified
Intended Educational Use:No
Abstract / Description:We present a strategy designed to separate several possible origins of the well-known enhancement of the Delta{I}=1/2 amplitude in non-leptonic kaon decays. In particular, we seek to disentangle the contribution of physics at the typical QCD scale (soft-gluon exchange) from the effects at the scale of the charm quark mass. This is achieved by considering QCD with an unphysically light charm quark, so that the theory possesses an approximate SU(4)_L x SU(4)_R chiral symmetry. By computing the relevant operator matrix elements and monitoring their values as the charm quark mass departs from the SU(4)-symmetric situation, the role of the charm quark can be assessed. We study the influence of the charm quark mass in Chiral Perturbation Theory. First results from lattice simulations in the SU(4)-symmetric limit are also discussed.
Classification / Thesaurus:Field Theory
Comment of the Author/Creator:Latex, 41 pages, 5 figures
External Publication Status:published
Document Type:Article
Communicated by:N.N.
Affiliations:MPI für Physik
Identifiers:LOCALID:MPP-2004-55
URL:http://www.slac.stanford.edu/spires/find/hep/www?r...
URL:http://arXiv.org/abs/hep-lat/0407007
URL:http://publications.mppmu.mpg.de/?action=search&mp...
Full Text:
You have privileges to view the following file(s):
hep-lat/0407007.pdf  [444,00 Kb] [Comment:file from upload service]  
 
The scope and number of records on eDoc is subject to the collection policies defined by each institute - see "info" button in the collection browse view.