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Options for the SELEX state by T. Barnes; F.E. Close; J.J. Dudek; S. Godfrey; E.S. Swanson is a Physics and Astronomy article available to read on EtoBox.

What is Options for the SELEX state about?

We consider possible assignments for the D + sJ (2632), which was recently reported in D + s η and D 0 K + final states by the SELEX Collaboration at Fermilab. The most plausible quark model assignment for this state is the first radial excitation (2 3 S 1 ) of the cs D \* s ( 2112), although the predicted mass and strong decay branching fractions for this assignment are not in agreement with the SELEX data. The reported dominance of D s η over DK appears especially problematic. An intriguing similarity to the K \* (1414) is noted. 2 3 S 1 -3 D 1 configuration mixing is also considered, and we find that this effect is unlikely to resolve the branching fraction discrepancy. Other interpretations as a cs-hybrid or a two-meson molecule are also considered, but appear unlikely. Thus, if this state is confirmed, it will require reconsideration of the systematics of charmed meson spectroscopy and strong decays.

Who reads Options for the SELEX state?

Author

T. Barnes; F.E. Close; J.J. Dudek; S. Godfrey; E.S. Swanson

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0370-2693)

Published

2004

Language

EN

Field

Physics and Astronomy (Physical Sciences)