Field, R.D.
SIG/SIG
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rivet Analysis
Resonance Decomposition of the $D^*$0 (2420) Through a Decay Angular Analysis

The ARGUS collaboration Albrecht, H. ; Glaser, R. ; Harder, G. ; et al.
Phys.Lett.B 232 (1989) 398-404, 1989.
Inspire Record 280943 DOI 10.17182/hepdata.45198

Using data collected with the ARGUS detector, we have performed a decay angular analysis of the enhancement, previously known as the D ∗ (2420), seen in the final state D ∗ (2010) + π − . We thereby exhibit that the observed broad structure is actually due to two relatively narrow resonances, one of which is identified as the D ∗ (2459) 0 , while the massof the other is measured to be (2414±2±5) MeV/ c 2 . The results of the analysis are in good agreement with the interpretation of the two states as L =1 D mesons of spin-parities 2 + and 1 + respectively.

2 data tables
Table 1

The cross sections times branching ratio.

Table 2

It is assumed that decays D PION and D* PION saturate the total widths.


PRODUCTION OF PHOTONS ASSOCIATED WITH THE PSI BY 217-GEV/C PI- MESONS

Kirk, T.B.W. ; Raja, R. ; Goodman, M. ; et al.
Phys.Rev.Lett. 42 (1979) 619-622, 1979.
Inspire Record 145303 DOI 10.17182/hepdata.20780

Dimuon production is studied in 217-GeV/c π−-hydrogen and π−-beryllium collisions with a lead-glass array to detect photons associated with the ψ. The ψ−γ mass spectrum shows a 2.6-standard-deviation excess of events above background at ∼3.5 GeV. This excess, if attributed to the decay χ(∼3.5)→ψγ, implies that 0.70±0.28 of the ψ's are produced via radiative decay of one of the χ states.

2 data tables
Table 1

E*D(SIG)/D(XL) is fitted by (1-X)**POWER.

Table 2

No description provided.