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Title: Photon radiation in e(+) e(-) -> hadrons at low energies with carlomat_3.1
Authors: Jegerlehner, Fred
Kołodziej, Karol
Keywords: Photon radiation; program carlomat
Issue Date: 2017
Citation: The European Physical Journal C, Vol. 77, iss. 4 (2017), art. no. 254, s. 1-10
Abstract: We present a sample of results for the cross sections of several processes of low energetic e+e- annihilation into final states containing pions accompanied by one or two photons, or a light lepton pair. The results, which have been obtained with a new version of a multipurpose Monte Carlo program carlomat, labelled 3.1, demonstrate new capabilities of the program which, among others, include a possibility of taking into account either the initial or final state radiation separately, or both at a time, and a possibility of inclusion of the electromagnetic charged pion form factor for processes with charged pion pairs. We also discuss some problems related to the U(1) electromagnetic gauge invariance.
DOI: 10.1140/epjc/s10052-017-4816-7
ISSN: 1434-6044
Appears in Collections:Artykuły (WNŚiT)

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