Spectroscopy and Charm Quark Fragmentation
Rolf Seuster
TL;DR
This paper reports on charm spectroscopy studies at KEKB, including observations of D** resonances, confirmation of DsJ states, and precise measurement of D*+ fragmentation functions, advancing understanding of charm quark behavior.
Contribution
It presents the first observations of broad D** resonances in B decays and provides highly accurate measurements of the D*+ fragmentation function.
Findings
Observation of broad D** resonances in B decays
Confirmation of DsJ resonances and their quantum numbers
Precise measurement of D*+ fragmentation function
Abstract
The large data sample accumulated at the KEKB storage ring allows for dedicated analysis in charm spectroscopy. This made the first observations of e.g. the broad D**resonances in B decays as well as other processes possible. The observation of the DsJ resonances are confirmed and indications of their quantum numbers are given. The fragmentation function for D*+ has been measured with unprecedented accuracy.
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