First Measurement of Chiral Dynamics in pi(-)gamma -> pi(-)pi(-)pi(+)

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10124614" target="_blank" >RIV/00216208:11320/12:10124614 - isvavai.cz</a>

Alternative codes found

RIV/68081731:_____/12:00390521 RIV/46747885:24510/12:#0000890 RIV/46747885:24220/12:#0002489

Result on the web

<a href="http://dx.doi.org/10.1103/PhysRevLett.108.192001" target="_blank" >http://dx.doi.org/10.1103/PhysRevLett.108.192001</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1103/PhysRevLett.108.192001" target="_blank" >10.1103/PhysRevLett.108.192001</a>

Result language

angličtina

Original language name

First Measurement of Chiral Dynamics in pi(-)gamma -> pi(-)pi(-)pi(+)

Original language description

The COMPASS Collaboration at CERN has investigated the pi(-)gamma -> pi(-)pi(-)pi(+) reaction at center-of-momentum energy below five pion masses, root s < 5m(pi), embedded in the Primakoff reaction of 190 GeV pions impinging on a lead target. Exchange of quasireal photons is selected by isolating the sharp Coulomb peak observed at smallest momentum transfers, t' < 0.001 GeV2/c(2). Using partial-wave analysis techniques, the scattering intensity of Coulomb production described in terms of chiral dynamics and its dependence on the 3 pi-invariant mass m(3 pi) = root s were extracted. The absolute cross section was determined in seven bins of root s with an overall precision of 20%. At leading order, the result is found to be in good agreement with the prediction of chiral perturbation theory over the whole energy range investigated.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BF - Elementary particle theory and high energy physics

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Physical Review Letters

ISSN

0031-9007

e-ISSN

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Volume of the periodical

108

Issue of the periodical within the volume

19

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

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UT code for WoS article

000303909400004

EID of the result in the Scopus database

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