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Habilitation Thesis
DOI
10.11606/T.43.2015.tde-30072015-174900
Document
Author
Full name
Roland Koberle
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 1969
Committee
Santos, Marcello Damy de Souza (President)
Goldemberg, Jose
Swieca, Jorge André
Tiomno, Jayme
Wataghin, Lucia
Title in Portuguese
Langrageanas efetivas no sistema Pion-Nucleon
Keywords in Portuguese
Física nuclear
Mecânica quântica
Abstract in Portuguese
Por meio de uma Lagrangeana efetiva, construida para que incorpore álgebra decorrentes, dominação por mésons vetoriais e CAPC, discutimos as propriedades dos sistemas A1 ρ π, π- N e π- π a baixas energias. Em particular calculamos o elemento de matriz S para a colisão πN → 2 πN, já que êste é o único processo em que existem dados experimentais com suficiente estatística, para que se possa determinar as propriedades da interação π – π próximas ao limiar. Dentro deste esquema os dados experimentais parecem favorecer os seguintes comprimentos de espalhamento π – π 8 a0 = 0,3 μ π -1 a0 = 0,09 μ π -1
Title in English
Effective Langrageanas in system Pion-Nucleon
Keywords in English
Langrageanas
Nuclear physics
Pion-Nucleon
Quantum mechanics
Abstract in English
Through an effective Lagrangian, built to incorporate algebra arising domination by vector mesons and CAPC, we discuss the properties of systems A1 ρ π, π- N e π- π at low energies. In particular calculate the array element S for collision πN → 2 πN, since this is the only case in which there is experimental data statistics enough so that it can determine the properties of interaction π – π near the threshold. Within this scheme the experimental data seem to favor the following scattering lengths π – π 8 a0 = 0,3 μ π -1 a0 = 0,09 μ π -1
 
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RE46137Koberle.pdf (3.12 Mbytes)
Publishing Date
2015-07-31
 
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