About: Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The excitation curve of e+e- annihilation into four charged pions in the rho(770)region is calculated using three existing models with rho mesons and pions in intermediate states supplemented by Feynman diagrams with the a1(1260)pi intermediate states. A two-term phenomenological Lagrangian of the a1-rho-pi interaction is used. The mixing angle is determined by fitting the e+e- (goes to) pi+pi-pi+pi- cross section data of the Novosibirsk CMD-2 collaboration and also its combination with the low-energy part of the BaBar collaboration data. It is shown that the inclusion of the a1-pi intermediate states succeeds in obtaining a good agreement with the data on both cross section and the rho0 (goes to) pi+pi-pi+pi- decay width. When moving to energies above 1~GeV, the rho(1450) and rho(1700) resonances are taken into account to get excellent agreement with the BaBar data over the full energy range up to 4.5~GeV. The excitation curve of e+e- annihilation into four charged pions in the rho(770)region is calculated using three existing models with rho mesons and pions in intermediate states supplemented by Feynman diagrams with the a1(1260)pi intermediate states. A two-term phenomenological Lagrangian of the a1-rho-pi interaction is used. The mixing angle is determined by fitting the e+e- (goes to) pi+pi-pi+pi- cross section data of the Novosibirsk CMD-2 collaboration and also its combination with the low-energy part of the BaBar collaboration data. It is shown that the inclusion of the a1-pi intermediate states succeeds in obtaining a good agreement with the data on both cross section and the rho0 (goes to) pi+pi-pi+pi- decay width. When moving to energies above 1~GeV, the rho(1450) and rho(1700) resonances are taken into account to get excellent agreement with the BaBar data over the full energy range up to 4.5~GeV. (en) Článek popisuje produkci čtyř nabitých pionů a a1-rho-pi mezonů v elektron-pozitronové anihilaci a aplikaci tří současných modelů při výpočtu daného procesu. (cs)
Title	Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian Langrangian popisující produkci čtyř nabitých pionů a a1-rho-pi mezonů v elektron-pozitronové anihilaci (cs) Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian (en)
skos:prefLabel	Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian Langrangian popisující produkci čtyř nabitých pionů a a1-rho-pi mezonů v elektron-pozitronové anihilaci (cs) Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian (en)
skos:notation	RIV/68407700:21670/07:15139739!RIV08-MSM-21670___
http://linked.open.../vavai/riv/strany	094030-1;094030-12
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(LC07050), Z(MSM4781305903), Z(MSM6840770029)
http://linked.open...iv/cisloPeriodika	9
http://linked.open...vai/riv/dodaniDat	2008
http://linked.open...aciTvurceVysledku	Lichard, Peter
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Ústav technické a experimentální fyziky ČVUT
http://linked.open...dnocenehoVysledku	419785
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/07:15139739
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	A1 meson; Electron-positron annihilation; Excitation curve; Four-pion decay; Rho meson; a1-rho-pi Lagrangian (en)
http://linked.open.../riv/klicoveSlovo	A1 meson Excitation curve Four-pion decay Rho meson a1-rho-pi Lagrangian Electron-positron annihilation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[7656EA20D5EF]
http://linked.open...i/riv/nazevZdroje	Physical Review D
http://linked.open...in/vavai/riv/obor	BF
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Center of experimental nuclear astrophysics and nuclear physics
http://linked.open...UplatneniVysledku	2007
http://linked.open...v/svazekPeriodika	76
http://linked.open...iv/tvurceVysledku	Lichard, Peter Juran, J.
http://linked.open...n/vavai/riv/zamer	Relativistic and particle physics and its astrophysical application Fundamental Experiments in Physics of Microworld
issn	1550-7998
number of pages	12 (xsd:int)
http://localhost/t...ganizacniJednotka	21670
is http://linked.open...avai/riv/vysledek of	Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian Electron-positron annihilation into four charged pions and the a1-rho-pi Lagrangian

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