Lattice calculation of nucleon axial form factors

Keh Fei Liu; Ji Min Wu; Shao Jing Dong; Walter Wilcox

doi:10.1016/0920-5632(91)90961-D

Lattice calculation of nucleon axial form factors

Keh Fei Liu, Ji Min Wu, Shao Jing Dong, Walter Wilcox

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Preliminary results on the isovector and isoscalar axial-vector form factors of the proton from a lattice QCD calculation are presented and discussed. The results are based on a quenched 16³ × 24 lattice at β = 6.0 with Wilson fermions at κ = 0.152. Results from the smeared source are compared with those from the point source. It is found that the smeared source gives somewhat better results at zero momentum transfer but worse results at high momentum transfers. Our results also suggest that the quark loop contribution to the flavor-singlet axial-vector current may play an important role in understanding the quark-spin content of the proton as determined from the recent EMC experiment.

Original language	English
Pages (from-to)	467-471
Number of pages	5
Journal	Nuclear Physics B - Proceedings Supplements
Volume	20
Issue number	C
DOIs	https://doi.org/10.1016/0920-5632(91)90961-D
State	Published - May 20 1991

Bibliographical note

Funding Information:
specela~as about the gbou spin 4 tent assuo~4~l u~tlb the tiaugleanomoly 5. In this manuscript, we shall repoet our prdiminafy results on the lattice gauge calculalmn of the isovec~r and isoscalar axial form factors of the proton. The cal- *This research was supported in part by the DOE Grand Challenge Program. tpresent address: Institute of High Energy Physics. Beijing. China

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Nuclear and High Energy Physics

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10.1016/0920-5632(91)90961-D

Cite this

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title = "Lattice calculation of nucleon axial form factors",

abstract = "Preliminary results on the isovector and isoscalar axial-vector form factors of the proton from a lattice QCD calculation are presented and discussed. The results are based on a quenched 163 × 24 lattice at β = 6.0 with Wilson fermions at κ = 0.152. Results from the smeared source are compared with those from the point source. It is found that the smeared source gives somewhat better results at zero momentum transfer but worse results at high momentum transfers. Our results also suggest that the quark loop contribution to the flavor-singlet axial-vector current may play an important role in understanding the quark-spin content of the proton as determined from the recent EMC experiment.",

author = "Liu, {Keh Fei} and Wu, {Ji Min} and Dong, {Shao Jing} and Walter Wilcox",

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year = "1991",

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doi = "10.1016/0920-5632(91)90961-D",

language = "English",

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T1 - Lattice calculation of nucleon axial form factors

AU - Liu, Keh Fei

AU - Wu, Ji Min

AU - Dong, Shao Jing

AU - Wilcox, Walter

N1 - Funding Information: specela~as about the gbou spin 4 tent assuo~4~l u~tlb the tiaugleanomoly 5. In this manuscript, we shall repoet our prdiminafy results on the lattice gauge calculalmn of the isovec~r and isoscalar axial form factors of the proton. The cal- *This research was supported in part by the DOE Grand Challenge Program. tpresent address: Institute of High Energy Physics. Beijing. China

PY - 1991/5/20

Y1 - 1991/5/20

N2 - Preliminary results on the isovector and isoscalar axial-vector form factors of the proton from a lattice QCD calculation are presented and discussed. The results are based on a quenched 163 × 24 lattice at β = 6.0 with Wilson fermions at κ = 0.152. Results from the smeared source are compared with those from the point source. It is found that the smeared source gives somewhat better results at zero momentum transfer but worse results at high momentum transfers. Our results also suggest that the quark loop contribution to the flavor-singlet axial-vector current may play an important role in understanding the quark-spin content of the proton as determined from the recent EMC experiment.

AB - Preliminary results on the isovector and isoscalar axial-vector form factors of the proton from a lattice QCD calculation are presented and discussed. The results are based on a quenched 163 × 24 lattice at β = 6.0 with Wilson fermions at κ = 0.152. Results from the smeared source are compared with those from the point source. It is found that the smeared source gives somewhat better results at zero momentum transfer but worse results at high momentum transfers. Our results also suggest that the quark loop contribution to the flavor-singlet axial-vector current may play an important role in understanding the quark-spin content of the proton as determined from the recent EMC experiment.

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JO - Nuclear Physics B - Proceedings Supplements

JF - Nuclear Physics B - Proceedings Supplements

IS - C

ER -

Lattice calculation of nucleon axial form factors

Abstract

Bibliographical note

ASJC Scopus subject areas

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