Kl3 semileptonic form factor from (2+1)-flavor lattice QCD

Boyle, P., Jüttner, A., Kenway, R.D., Sachrajda, C.T., Sasaki, S., Soni, A., Tweedie, R.J. and Zanotti, J.M. (2008) Kl3 semileptonic form factor from (2+1)-flavor lattice QCD. Physical Review Letters, 100, (14), 141601. (doi:10.1103/PhysRevLett.100.141601).


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We present the first results for the Kl3 form factor from simulations with 2+1 flavors of dynamical domain wall quarks. Combining our result, namely, f+(0)=0.964(5) with the latest experimental results for Kl3 decays leads to |Vus|=0.2249(14), reducing the uncertaintity in this important parameter. For the O(p6) term in the chiral expansion we obtain ?f=-0.013(5).

Item Type: Article
Digital Object Identifier (DOI): doi:10.1103/PhysRevLett.100.141601
ISSNs: 0031-9007 (print)
1079-7114 (electronic)
Subjects: Q Science > QC Physics
Divisions : University Structure - Pre August 2011 > School of Physics and Astronomy > Southampton High Energy Physics
ePrint ID: 143319
Accepted Date and Publication Date:
11 April 2008Published
Date Deposited: 26 May 2010 08:24
Last Modified: 31 Mar 2016 13:19
URI: http://eprints.soton.ac.uk/id/eprint/143319

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