The nucleon anapole form factor in chiral perturbation theory to sub-leading order

C. M. Maekawa; J. S. Veiga; U. Van Kolck

doi:10.1016/S0370-2693(00)00851-0

The nucleon anapole form factor in chiral perturbation theory to sub-leading order

C. M. Maekawa, J. S. Veiga, U. Van Kolck

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41 Scopus citations

Abstract

The anapole form factor of the nucleon is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isovector anapole form factor does not vanish. The anapole moment depends on counterterms that reflect short-range dynamics, but the momentum dependence of the form factor is determined by pion loops in terms of parameters that could in principle be fixed from other processes. If these parameters are assumed to have natural size, the sub-leading corrections do not exceed ~ 30% at momentum Q ~ 300 MeV. (C) 2000 Published by Elsevier Science B.V.

Original language	English (US)
Pages (from-to)	167-174
Number of pages	8
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	488
Issue number	2
DOIs	https://doi.org/10.1016/S0370-2693(00)00851-0
State	Published - Aug 31 2000
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(00)00851-0

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title = "The nucleon anapole form factor in chiral perturbation theory to sub-leading order",

abstract = "The anapole form factor of the nucleon is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isovector anapole form factor does not vanish. The anapole moment depends on counterterms that reflect short-range dynamics, but the momentum dependence of the form factor is determined by pion loops in terms of parameters that could in principle be fixed from other processes. If these parameters are assumed to have natural size, the sub-leading corrections do not exceed ~ 30% at momentum Q ~ 300 MeV. (C) 2000 Published by Elsevier Science B.V.",

author = "Maekawa, {C. M.} and Veiga, {J. S.} and {Van Kolck}, U.",

note = "Funding Information: We thank Bob McKeown and the group at the Kellogg Lab for getting us interested in this problem, and Mike Musolf for discussions. C.M.M. and J.S.V. acknowledge fellowships from FAPESP (Brazil), grants 99/00080-5 and 99/05388-8. This research was supported in part by the US National Science Foundation.",

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doi = "10.1016/S0370-2693(00)00851-0",

language = "English (US)",

volume = "488",

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T1 - The nucleon anapole form factor in chiral perturbation theory to sub-leading order

AU - Maekawa, C. M.

AU - Veiga, J. S.

AU - Van Kolck, U.

N1 - Funding Information: We thank Bob McKeown and the group at the Kellogg Lab for getting us interested in this problem, and Mike Musolf for discussions. C.M.M. and J.S.V. acknowledge fellowships from FAPESP (Brazil), grants 99/00080-5 and 99/05388-8. This research was supported in part by the US National Science Foundation.

PY - 2000/8/31

Y1 - 2000/8/31

N2 - The anapole form factor of the nucleon is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isovector anapole form factor does not vanish. The anapole moment depends on counterterms that reflect short-range dynamics, but the momentum dependence of the form factor is determined by pion loops in terms of parameters that could in principle be fixed from other processes. If these parameters are assumed to have natural size, the sub-leading corrections do not exceed ~ 30% at momentum Q ~ 300 MeV. (C) 2000 Published by Elsevier Science B.V.

AB - The anapole form factor of the nucleon is calculated in chiral perturbation theory to sub-leading order. This is the lowest order in which the isovector anapole form factor does not vanish. The anapole moment depends on counterterms that reflect short-range dynamics, but the momentum dependence of the form factor is determined by pion loops in terms of parameters that could in principle be fixed from other processes. If these parameters are assumed to have natural size, the sub-leading corrections do not exceed ~ 30% at momentum Q ~ 300 MeV. (C) 2000 Published by Elsevier Science B.V.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 2

ER -

The nucleon anapole form factor in chiral perturbation theory to sub-leading order

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