HEPData Search

We have observed inclusive production of D0 and D+ mesons, and their charge conjugates, in e+e− annihilation at 29 GeV on the basis of a data sample of 106 pb−1. These signals correspond to R values of R(D0+D―0)=1.8±0.5 and R(D++D−)=1.2±0.4. Taking the D+ and D0 data together, we measure a charge asymmetry of A=−0.08±0.12 for charmed quarks. A comparison of R(D+D―) with R(D*+D―*) obtained via the process D*+→D0π+ gives a DD* ratio of 1.0−0.2+0.3, indicating that direct D* production dominates over direct D production.

4 data tables

Table 1

No description provided.

Table 2

EXTRAPOLATED TO ALL Z.

Table 3

No description provided.

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Inclusive $D$ and $D^*$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

The HRS collaboration Ahlen, S.P. ; Akerlof, C. ; Baranko, G. ; et al.

Phys.Rev.Lett. 51 (1983) 1147, 1983.

Inspire Record 191536 DOI 10.17182/hepdata.20523

Inclusive production of (D0, D¯0) and D± mesons have been observed in e+e− annihilation at 29 GeV. The signals correspond to R values of R(D0+D¯0)=3.25±1.2 and R(D++D−)=1.35±0.6. D*± production is also observed via the process D*+→D0π+ and its charge conjugate. The D and D* production rates are compared.

7 data tables

Table 1

EXTRAPOLATION TO ALL Z.

Table 2

EXTRAPOLATION TO ALL Z.

Table 3

EXTRAPOLATION TO ALL Z.

More…

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CM Energies (GeV)

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Production of charmed mesons in Z decays

rivet Analysis
Inclusive D0 and $D^+$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

Inclusive $D$ and $D^*$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

Date

Collaboration

Subject_areas

Phrases

Reactions Reset

Observables

CM Energies (GeV)

Authors Reset

Production of charmed mesons in Z decays

rivet Analysis Inclusive D0 and $D^+$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

Inclusive $D$ and $D^*$ Production in $e^+ e^-$ Annihilation at 29-{GeV}

rivet Analysis
Inclusive D0 and $D^+$ Production in $e^+ e^-$ Annihilation at 29-{GeV}