Nucleon axial form factors from two-flavour Lattice QCD

Publikationstyp:
Konferenzbeitrag
Metadaten:
Autoren
  • Parikshit Junnarkar
DOI
10.22323/1.214.0150
Zeitschrift
Proceedings of The 32nd International Symposium on Lattice Field Theory — PoS(LATTICE2014)
Name of conference
The 32nd International Symposium on Lattice Field Theory
Datum der Veröffentlichung
2015
Status
Published
Herausgeber
Sissa Medialab
Herausgeber URL
http://dx.doi.org/10.22323/1.214.0150
Datum der Datenerfassung
2018
Conference start date
2014
Titel
Nucleon axial form factors from two-flavour Lattice QCD

Datenquelle: Crossref

Andere Metadatenquellen:
Abstract
We present preliminary results on the axial form factor $G_A(Q^2)$ and the induced pseudoscalar form factor $G_P(Q^2)$ of the nucleon. A systematic analysis of the excited-state contributions to form factors is performed on the CLS ensemble `N6' with $m_\pi = 340 \ \text{MeV}$ and lattice spacing $a \sim 0.05 \ \text{fm}$. The relevant three-point functions were computed with source-sink separations ranging from $t_s \sim 0.6 \ \text{fm}$ to $t_s \sim \ 1.4 \ \text{fm}$. We observe that the form factors suffer from non-trivial excited-state contributions at the source-sink separations available to us. It is noted that naive plateau fits underestimate the excited-state contributions and that the method of summed operator insertions correctly accounts for these effects.
Autoren
  • PM Junnarkar
  • S Capitani
  • D Djukanovic
  • G von Hippel
  • J Hua
  • B Jäger
  • HB Meyer
  • TD Rae
  • H Wittig
Autoren-URL
http://arxiv.org/abs/1411.5828v1
Zeitschrift
PoS(LATTICE2014)150
Schlüsselwörter
  • hep-lat
  • hep-lat
Notes
7 pages, 12 figures; talk presented at Lattice 2014 -- 32nd International Symposium on Lattice Field Theory, 23-28 June, 2014, Columbia University New York, NY
Datum der Veröffentlichung
2014
Datum der Datenerfassung
2014
Datum, an dem der Datensatz öffentlich gemacht wurde
2014
Titel
Nucleon axial form factors from two-flavour Lattice QCD

Files

1411.5828v1.pdf

Datenquelle: arXiv

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