About: Joint description of the e+e- annihilation into both four-pion channels

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The e+e--->pi+pi-pi0pi0 reaction cross section as a function of the incident energy is calculated using a model that is an extension of our recently published model of the e+e- annihilation into four charged pions. The latter considered the intermediate states with the pi, rho, and a1 mesons and fixed the mixing angle of the a1rhopi Lagrangian and other parameters by fitting the cross section data. Here we supplement the original intermediate states with those containing omega(782) and h1(1170), but keep unchanged the values of those parameters that enter both charged and mixed channel calculations. The inclusion of omega is vital for obtaining a good fit to the cross section data, while the intermediate states with h1 further improve it. Finally, we merge our models of the e+e--->pi+pi-pi0pi0 and e+e--->pi+pi-pi+pi- reactions and obtain a simultaneous good fit. The e+e--->pi+pi-pi0pi0 reaction cross section as a function of the incident energy is calculated using a model that is an extension of our recently published model of the e+e- annihilation into four charged pions. The latter considered the intermediate states with the pi, rho, and a1 mesons and fixed the mixing angle of the a1rhopi Lagrangian and other parameters by fitting the cross section data. Here we supplement the original intermediate states with those containing omega(782) and h1(1170), but keep unchanged the values of those parameters that enter both charged and mixed channel calculations. The inclusion of omega is vital for obtaining a good fit to the cross section data, while the intermediate states with h1 further improve it. Finally, we merge our models of the e+e--->pi+pi-pi0pi0 and e+e--->pi+pi-pi+pi- reactions and obtain a simultaneous good fit. (en) Účinný průřez reakce e+e--->pi+pi-pi0pi0 je počítán pomocí modelu, který je rozšířením našeho modelu uvažující e+e- anihilaci na čtyři nabité piony. Původní model uvažoval intermediální stavy s pi, rho a a1 mezony a jeho fitem na data účinného průřezu byly určeny parametry a1rhopi lagrangiánu. Nyní byly tyto intermediální stavy rozšířeny o stavy s mezony omega(782) a h1(1170). Parametry modelu, které jsou společné oběma kanálům, jsou zafixovány fitem na kanál e+e--->pi+pi-pi+pi-. Ukazuje se, že zahrnutí mezonu omega je pro získání dobrých fitů důležité. Zahrnutí mezonu a1 výsledky dále zlepší. Provedení simultánního fitu na oba kanály reakce, tj. e+e--->pi+pi-pi0pi0 a e+e--->pi+pi-pi+pi-, dává velmi uspokojivé výsledky. (cs)
Title	Joint description of the e+e- annihilation into both four-pion channels Joint description of the e+e- annihilation into both four-pion channels (en) Jednotný popis e+e- anihilace na oba čtyřpionové kanály (cs)
skos:prefLabel	Joint description of the e+e- annihilation into both four-pion channels Joint description of the e+e- annihilation into both four-pion channels (en) Jednotný popis e+e- anihilace na oba čtyřpionové kanály (cs)
skos:notation	RIV/68407700:21670/08:15152522!RIV09-MSM-21670___
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6840770029)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2009
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	374011
http://linked.open...ai/riv/idVysledku	RIV/68407700:21670/08:15152522
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	pion; e+e- annihilation; a1rhopi Lagrangian (en)
http://linked.open.../riv/klicoveSlovo	pion a1rhopi Lagrangian e+e- annihilation
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[560C9C96D991]
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...UplatneniVysledku	2008
http://linked.open...v/svazekPeriodika	78
http://linked.open...iv/tvurceVysledku	Juráň, Josef Lichard, Peter
http://linked.open...ain/vavai/riv/wos	000258636400113
http://linked.open...n/vavai/riv/zamer	Fundamental Experiments in Physics of Microworld
issn	1550-7998
number of pages	4 (xsd:int)
http://localhost/t...ganizacniJednotka	21670
is http://linked.open...avai/riv/vysledek of	Joint description of the e+e- annihilation into both four-pion channels Joint description of the e+e- annihilation into both four-pion channels Joint description of the e+e- annihilation into both four-pion channels Joint description of the e+e- annihilation into both four-pion channels

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