Double neutral pion photoproduction at threshold

V. Bernard; N. Kaiser; Ulf G. Meißner

doi:10.1016/0370-2693(96)00646-6

Double neutral pion photoproduction at threshold

V. Bernard, N. Kaiser, Ulf G. Meißner

School Office of the TUM School of Natural Sciences

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20 Scopus citations

Abstract

We consider the chiral expansion of the threshold amplitude for the reaction γp → π⁰π⁰p to order script O sign (M²_π). We substantiate a claim that this photoproduction channel is significantly enhanced close to threshold due to pion loops. A precise measurement of the corresponding cross sections is called for which allows to test chiral perturbation theory.

Original language	English
Pages (from-to)	19-23
Number of pages	5
Journal	Physics Letters B
Volume	382
Issue number	1-2
DOIs	https://doi.org/10.1016/0370-2693(96)00646-6
State	Published - 1 Aug 1996

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title = "Double neutral pion photoproduction at threshold",

abstract = "We consider the chiral expansion of the threshold amplitude for the reaction γp → π0π0p to order script O sign (M2π). We substantiate a claim that this photoproduction channel is significantly enhanced close to threshold due to pion loops. A precise measurement of the corresponding cross sections is called for which allows to test chiral perturbation theory.",

author = "V. Bernard and N. Kaiser and Mei{\ss}ner, {Ulf G.}",

year = "1996",

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T1 - Double neutral pion photoproduction at threshold

AU - Bernard, V.

AU - Kaiser, N.

AU - Meißner, Ulf G.

PY - 1996/8/1

Y1 - 1996/8/1

N2 - We consider the chiral expansion of the threshold amplitude for the reaction γp → π0π0p to order script O sign (M2π). We substantiate a claim that this photoproduction channel is significantly enhanced close to threshold due to pion loops. A precise measurement of the corresponding cross sections is called for which allows to test chiral perturbation theory.

AB - We consider the chiral expansion of the threshold amplitude for the reaction γp → π0π0p to order script O sign (M2π). We substantiate a claim that this photoproduction channel is significantly enhanced close to threshold due to pion loops. A precise measurement of the corresponding cross sections is called for which allows to test chiral perturbation theory.

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U2 - 10.1016/0370-2693(96)00646-6

DO - 10.1016/0370-2693(96)00646-6

M3 - Article

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SN - 0370-2693

VL - 382

SP - 19

EP - 23

JO - Physics Letters B

JF - Physics Letters B

IS - 1-2

ER -

Double neutral pion photoproduction at threshold

Abstract

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