Doi, Takumi and Deka, Mridupawan and Dong, Shao-Jing and Draper, Terrence and Keh-Fei, Liu and Mankame, Devdatta and Mathur, Nilmani and Streuer, Thomas
Nucleon strangeness form factors and moments of PDF.
In: 12TH INTERNATIONAL CONFERENCE ON MESON‐NUCLEON PHYSICS AND THE STRUCTURE OF THE NUCLEON (MENU 2010), 31 May–4 June 2010 , Virginia, (USA) .
The calculation of the nucleon strangeness form factors from Nf = 2 + 1 clover fermion lattice QCD is presented.
Disconnected insertions are evaluated using the Z(4) stochastic method, along with unbiased subtractions from the hopping
parameter expansion. We find that increasing the number of nucleon sources for each configuration improves the signal
significantly. We obtain Gs
M(0) = −0.017(25)(07), which is consistent with experimental values, and has an order of
magnitude smaller error. Preliminary results for the strangeness contribution to the second moment of the parton distribution
function are also presented.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Additional information (public):||AIP Conf. Proc. 1374|
|Institutions:|| Physics > Institute of Theroretical Physics > Chair Professor Braun > Group Vladimir Braun|
|Subjects:||500 Science > 530 Physics|
|Refereed:||Yes, this version has been refereed|
|Created at the University of Regensburg:||Partially|
|Deposited On:||14 May 2012 08:46|
|Last Modified:||14 May 2012 08:46|