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Master's Dissertation
DOI
https://doi.org/10.11606/D.43.2003.tde-24062021-124829
Document
Author
Full name
Maria Simone Kugeratski Souza
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2003
Supervisor
Committee
Navarra, Fernando Silveira (President)
Krein, Gastão Inácio
Nemes, Maria Carolina
Title in Portuguese
Interação hádron-charmonium em modelos simples
Keywords in Portuguese
FÍSICA NUCLEAR
INTERAÇÕES NUCLEARES
PARTÍCULAS (FÍSICA NUCLEAR)
Abstract in Portuguese
Nós desenvolvemos o modelo Dipolo-Capacitor para calcular as seções de choque para a interação hádron-charmonium e hádron-híbrido. Neste modelo o charmonium é tratado como um dipolo de cor muito menor do que o hádron, que é tratado como um capacitor de cor. O capacitor além de ter extensão é caracterizado por seu campo cromo-elétrico ''VET.E' POT.a'. Os quarks pesados sentem a ação deste campo externo e recebem energia suficiente para se dissociarem num par de mésons D. Os resultados obtidos por nós concordam numericamente com os obtidos através de outras técnicas. Fizemos a extensão do modelo para tratar da interação hádron-híbrido. Encontramos neste caso valores muito menores do que os obtidos em estimativas anteriores.
Title in English
Hadron-charmonium interaction in simple models
Keywords in English
NUCLEAR INTERACTIONS
NUCLEAR PHYSICS
PARTICLES (NUCLEAR PHYSICS)
Abstract in English
In this work we develop a simple model to study the reactions charmonium-hadron and hybrid-hadron. In this model the charmonium is treated as a small color dipole and the hadron produces an external chromo-eletric field, felt by the heavy quarks. We obtain results for the cross section which are compatible with other existing estimates. We extend this idea further to the case of the hybrid-hadron interaction and compare our results to those obtained in the other approaches.
 
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Publishing Date
2021-06-24
 
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