Neutral pion photoproduction at threshold

Véronique Bernard; Norbert Kaiser; Jürg Gasser; Ulf G. Meißner

doi:10.1016/0370-2693(91)90818-B

Neutral pion photoproduction at threshold

Véronique Bernard, Norbert Kaiser, Jürg Gasser, Ulf G. Meißner

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

108 Scopus citations

Abstract

We evaluate the neutral pion photoproduction amplitude at threshold to one loop in chiral perturbation theory. Virtual pions generated infrared singularities in the scattering amplitude and modify the familiar low-energy expansion of the electric dipole amplitude E_o+ at next-to-leading order.

Original language	English
Pages (from-to)	291-295
Number of pages	5
Journal	Physics Letters B
Volume	268
Issue number	2
DOIs	https://doi.org/10.1016/0370-2693(91)90818-B
State	Published - 10 Oct 1991
Externally published	Yes

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@article{7c35bac3e03d43c69f5b367cb61984a5,

title = "Neutral pion photoproduction at threshold",

abstract = "We evaluate the neutral pion photoproduction amplitude at threshold to one loop in chiral perturbation theory. Virtual pions generated infrared singularities in the scattering amplitude and modify the familiar low-energy expansion of the electric dipole amplitude Eo+ at next-to-leading order.",

author = "V{\'e}ronique Bernard and Norbert Kaiser and J{\"u}rg Gasser and Mei{\ss}ner, {Ulf G.}",

note = "Funding Information: Work supported in part by Deutsche Forschungsgemeinschafl and by Schweizerischer Nationalfonds.",

year = "1991",

month = oct,

day = "10",

doi = "10.1016/0370-2693(91)90818-B",

language = "English",

volume = "268",

pages = "291--295",

journal = "Physics Letters B",

issn = "0370-2693",

publisher = "Elsevier B.V.",

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T1 - Neutral pion photoproduction at threshold

AU - Bernard, Véronique

AU - Kaiser, Norbert

AU - Gasser, Jürg

AU - Meißner, Ulf G.

N1 - Funding Information: Work supported in part by Deutsche Forschungsgemeinschafl and by Schweizerischer Nationalfonds.

PY - 1991/10/10

Y1 - 1991/10/10

N2 - We evaluate the neutral pion photoproduction amplitude at threshold to one loop in chiral perturbation theory. Virtual pions generated infrared singularities in the scattering amplitude and modify the familiar low-energy expansion of the electric dipole amplitude Eo+ at next-to-leading order.

AB - We evaluate the neutral pion photoproduction amplitude at threshold to one loop in chiral perturbation theory. Virtual pions generated infrared singularities in the scattering amplitude and modify the familiar low-energy expansion of the electric dipole amplitude Eo+ at next-to-leading order.

UR - http://www.scopus.com/inward/record.url?scp=0001250218&partnerID=8YFLogxK

U2 - 10.1016/0370-2693(91)90818-B

DO - 10.1016/0370-2693(91)90818-B

M3 - Article

AN - SCOPUS:0001250218

SN - 0370-2693

VL - 268

SP - 291

EP - 295

JO - Physics Letters B

JF - Physics Letters B

IS - 2

ER -

Neutral pion photoproduction at threshold

Abstract

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