Chiral corrections to the Kroll-Ruderman theorem

V. Bernard; N. Kaiser; Ulf G. Meißner

doi:10.1016/0370-2693(96)00699-5

Chiral corrections to the Kroll-Ruderman theorem

V. Bernard
, N. Kaiser
, Ulf G. Meißner

School Office of the TUM School of Natural Sciences

Institut de Physique
Centre de Recherches Nucléaires
Rheinische Friedrich-Wilhelms-Universität Bonn
Forschungszentrum Jülich (FZJ)

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

44 Scopus citations

Abstract

We calculate the one-loop corrections to the Kroll-Ruderman low-energy theorems for charged pion photoproduction in the framework of heavy baryon chiral perturbation theory. We predict the threshold S-wave multipole E₀₊ to be E^thr₀₊ (γp → π⁺ n) = (28.2 ± 0.6) · 10^-3/M_π and E^thr₀₊ (γn → π^- p) = (-32.7 ± 0.6) · 10^-3/Mπ, respectively, for a fixed pion-nucleon coupling constant, g_πN = 13.4. A comparison to the existing data is also given.

Original language	English
Pages (from-to)	116-120
Number of pages	5
Journal	Physics Letters B
Volume	383
Issue number	1
DOIs	https://doi.org/10.1016/0370-2693(96)00699-5
State	Published - 22 Aug 1996

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title = "Chiral corrections to the Kroll-Ruderman theorem",

abstract = "We calculate the one-loop corrections to the Kroll-Ruderman low-energy theorems for charged pion photoproduction in the framework of heavy baryon chiral perturbation theory. We predict the threshold S-wave multipole E0+ to be Ethr0+ (γp → π+ n) = (28.2 ± 0.6) · 10-3/Mπ and Ethr0+ (γn → π- p) = (-32.7 ± 0.6) · 10-3/Mπ, respectively, for a fixed pion-nucleon coupling constant, gπN = 13.4. A comparison to the existing data is also given.",

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T1 - Chiral corrections to the Kroll-Ruderman theorem

AU - Bernard, V.

AU - Kaiser, N.

AU - Meißner, Ulf G.

PY - 1996/8/22

Y1 - 1996/8/22

N2 - We calculate the one-loop corrections to the Kroll-Ruderman low-energy theorems for charged pion photoproduction in the framework of heavy baryon chiral perturbation theory. We predict the threshold S-wave multipole E0+ to be Ethr0+ (γp → π+ n) = (28.2 ± 0.6) · 10-3/Mπ and Ethr0+ (γn → π- p) = (-32.7 ± 0.6) · 10-3/Mπ, respectively, for a fixed pion-nucleon coupling constant, gπN = 13.4. A comparison to the existing data is also given.

AB - We calculate the one-loop corrections to the Kroll-Ruderman low-energy theorems for charged pion photoproduction in the framework of heavy baryon chiral perturbation theory. We predict the threshold S-wave multipole E0+ to be Ethr0+ (γp → π+ n) = (28.2 ± 0.6) · 10-3/Mπ and Ethr0+ (γn → π- p) = (-32.7 ± 0.6) · 10-3/Mπ, respectively, for a fixed pion-nucleon coupling constant, gπN = 13.4. A comparison to the existing data is also given.

UR - https://www.scopus.com/pages/publications/12944306324

U2 - 10.1016/0370-2693(96)00699-5

DO - 10.1016/0370-2693(96)00699-5

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SN - 0370-2693

VL - 383

SP - 116

EP - 120

JO - Physics Letters B

JF - Physics Letters B

IS - 1

ER -

Chiral corrections to the Kroll-Ruderman theorem

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