University of Groningen
A study of the ground-state properties of charmonium via radiative transitions in ψ' → γηc and
J/ψ → γηc
Haddadi, Zahra
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Publication date: 2017
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Haddadi, Z. (2017). A study of the ground-state properties of charmonium via radiative transitions in ψ' → γηc and J/ψ → γηc. University of Groningen.
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Propositions
Zahra Haddadi
1. Charmonium, a bound state composed of a charm and anticharm quark pair, is the ideal probe to study the non-perturbative dynamics of QCD.
2. The main objectives of M1-transition studies have been to probe the basic properties of various charmonium states, in particular the mass and width of pseudo-scalar states, and to exploit the transition photon as a probe to study the structure of charmonium states.
3. An extended partial-wave analysis frame in which all available data related to the production and decay of the ηc is necessary to unam-biguously extract the basic resonance parameters of this state. 4. One possible and intriguing explanation of the interference of our
ob-served signal in J/ψ → γηc and ψ
0
→ γηc with a non-resonant
back-ground is the presence of exotic states, such as glueballs.
5. The PANDA experiment that will take place at the future facility FAIR is the best way to get access to the line shape of the ηc.
6. People built houses to make cities and then civilizations were born inside the cities. But they never could make a unified community. A unified community is built by involving people in their fate and destiny whether in a cave or a metropolitan city.
7. People are grateful when you are spending your money for them but ungrateful when you give your soul. It is hard to determine where, when and to whom you give and grant.
8. No human being is perfect on moral principles. It is no one’s ability to perceive it.
