Mouthuy, Th.
PI- P --> 2ETA N
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Observation of a 1750-{MeV} Narrow Meson Decaying Into $\eta \eta$

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP) collaboration Alde, D. ; Binon, F. ; Bricman, C. ; et al.
Phys.Lett.B 182 (1986) 105, 1986.
Inspire Record 233596 DOI 10.17182/hepdata.30211

A narrow meson which decays into ηη is observed in 38 GeV/ c π − p collisions at large momentum transfer. The experiment has been performed at the Serpukhov accelerator with the GAMS-2000 spectrometer. The mass of this new meson is (1755 ± 8) MeV, its width is less than 50 MeV. Its spin-parity is J PC =0 ++ or less probably 2 ++ .

1 data table
Table 1

No description provided.


OBSERVATION OF A NARROW MESON WITH A MASS OF 1750-MeV DECAYING INTO eta eta PAIR

The Serpukhov-Brussels-Annecy(LAPP) collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.
IFVE-86-155, 1986.
Inspire Record 234608 DOI 10.17182/hepdata.10523

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Production of $G(1590)$ and Other Mesons Decaying Into $\eta$ Pairs by 100-{GeV}/$c \pi^-$ on Protons

Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.
Yad.Fiz. 44 (1986) 120-136, 1986.
Inspire Record 222928 DOI 10.17182/hepdata.10313

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


Study of $\pi^- p \to \eta^\prime \eta n$ in a Search for Glueballs

The Serpukhov-Brussels-Annecy(LAPP) collaboration Binon, F. ; Bricman, C. ; Donskov, S.V. ; et al.
Nuovo Cim.A 80 (1984) 363, 1984.
Inspire Record 199417 DOI 10.17182/hepdata.37465

η′η pair production in the charge exchange reaction π−p→η′ηn has been observed and studied in a search for glueballs with the 38 GeV/c pion beam of the 70 GeV IHEP accelerator. The γ-rays from the decay η′η→4γ were detected with the hodoscope spectrometer GAMS-2000. The η′η events in the mass range from threshold up to 1.8 GeV are decays of the scalar G(1590)-meson which has been already observed in its ηη decay mode. The measured ratio of the partial widths of the G→η′η and the G → ηη decay channels is 2.7±0.8 in agreement with the value expected for glueballs.

1 data table
Table 1

No description provided.