ELECTROMAGNETIC FORM-FACTOR OF D-ASTERISK-]D TRANSITION IN THE TIME-LIKE REGION

Date

1994-12-01

Author

Alıyev, Tahmasıb
ILTAN, E
PAK, NK
REKALO, MP

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The internal conversion process D* --> De(+) e(-), and D*($) over bar D-pair production in e(+) e(-) -collisions, e(+) e(-) --> D*($) over bar D, which are described by the same electromagnetic form factor with time-like momentum transfer, have been analyzed. After carrying out a general analysis of the kinematical aspects of the one-photon mechanism has been performed and the predictions of the vector-dominance model for the D* --> D transition form factor are discussed. It is shown that use of the asymptotic behaviour of the form factors of D*(+,0) --> D(+,0)gamma*-transitions and the theoretical values of constants of D*(+,0) --> D(+,0)gamma radiative decay enables one to determine part of the unknown parameters of these form factors. The coefficient of the internal conversion for D* --> De(+) e(-) is calculated and is shown to be model independent.

Subject Keywords

Physics and Astronomy (miscellaneous), Engineering (miscellaneous)

URI

https://hdl.handle.net/11511/35399

Collections

Department of Physics, Article