Search for the Decay $D$(s) $\to \rho^0 \pi$ as Evidence for Quark Annihilation

Albrecht, H.; Andam, A.A.; Binder, U.; Bockmann, P.; Glaser, R.; Harder, G.; Nippe, A.; Schafer, M.; Schmidt-Parzefall, W.; Schroder, H.

doi:10.1016/0370-2693(87)90893-8

Search for the Decay $D$ (s) $\to \rho^0 \pi$ as Evidence for Quark Annihilation

ARGUS

Collaboration

•

H. Albrecht
(
- DESY
)

May, 1987

5 pages

Published in:

Phys.Lett.B 195 (1987) 102-106

Published: 1987

DOI:

10.1016/0370-2693(87)90893-8

Report number:

DESY-87-045

Experiments:

DESY-DORIS-ARGUS

reference search31 citations

Citations per year

Abstract: (Elsevier)

We have searched for the decay D + s → ρ 0 π + which can only occur via annihilation of the constituent quarks, and compared it to the decay D + s → ρπ + where the charm quark may decay independently of the light quark. An upper limit on the ratio BR ( D + s →ρ 0 π + ) BR ( D + s →ρπ + ) of 0.22 at the 90% confidence level is obtained. This result constra ins models which enhance. the weak annihilation contribution to heavy meson decays by final-state interactions, a mechanism used for explaining the large branching ratio observed for D 0 →ρ K 0 .

ELECTRON POSITRON: COLLIDING BEAMS
COLLIDING BEAMS: ELECTRON POSITRON
ELECTRON POSITRON: ANNIHILATION
ANNIHILATION: ELECTRON POSITRON
F+: ELECTROPRODUCTION
ELECTROPRODUCTION: F+
F+: NONLEPTONIC DECAY
NONLEPTONIC DECAY: F+
F+: BRANCHING RATIO
RHO(770)0: ELECTROPRODUCTION

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Figures(0)

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Search for the Decay DDD(s) →ρ0π\to \rho^0 \pi→ρ0π as Evidence for Quark Annihilation

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Search for the Decay $D$ (s) $\to \rho^0 \pi$ as Evidence for Quark Annihilation