Remarks on the Differing Lifetimes of Charmed Mesons

Rosen, Simon Peter

doi:10.1103/PhysRevLett.44.4

Remarks on the Differing Lifetimes of Charmed Mesons

Simon Peter Rosen
(
- Los Alamos
)

Nov, 1979

10 pages

Published in:

Phys.Rev.Lett. 44 (1980) 4

DOI:

10.1103/PhysRevLett.44.4

Report number:

LA-UR-79-2619

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Abstract: (APS)

Differences in the D+ and D0 lifetimes may arise either from 6 dominance in the effective nonleptonic Hamiltonian, or from the dominance of a particular W+-exchange diagram which behaves like a D0−K¯0* pole. If 6 dominance holds, then the F+ will have a relatively short lifetime and a small semileptonic branching ratio, just like the D0; but if W+ exchange is dominant, the F+ will have a long lifetime and large semileptonic branching ratio, like the D+.

TALK
CHARMED MESON: NONLEPTONIC DECAY
NONLEPTONIC DECAY: CHARMED MESON
D+: LIFETIME
D0: LIFETIME
LIFETIME: DIFFERENCE
W+: EXCHANGE
EXCHANGE: W+
D/S+: LIFETIME
D: BRANCHING RATIO

References(17)

Figures(0)

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