Aleshin, Yu.D.
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NEUTRAL MESONS WHICH DECAY INTO 4 pi0

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP) collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.
Phys.Lett.B 198 (1987) 286-291, 1987.
Inspire Record 250768 DOI 10.17182/hepdata.30106

Data on the 4π 0 decay mode of mesons have been obtained in a search for glueballs performed at the CERN SPS with the GAMS-4000 multiphoton spectrometer. A new tensor glueball candidate X(1810) appears as a clear peak in the 4π 0 mass spectrum. The 4π 0 decay of G(1590) is also observed. The measured value of BR(G→4 π 0 )/BR(G→ ηη )=0.8±0.3 further supports the glueball assignment of this scalar particle. The rate decay of f(1270) into 4π 0 has been measured: BR(f→4 π 0 ) = (3±1)×10 −3 .

4 data tables
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STUDY OF POLARIZATION IN EXCLUSIVE PROTON - DEUTERON BREAKUP REACTION p D ---> p p n AT 1-GeV

Aleshin, N.P. ; Belostotsky, S.L. ; Dotsenko, Yu.V. ; et al.
LENINGRAD-87-1259, 1987.
Inspire Record 247406 DOI 10.17182/hepdata.9284

None

4 data tables
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PRODUCTION OF HEAVY ISOBARS IN REACTION pi- p ---> pi0 pi+ pi- pi- p AT 4.5-GeV/c MOMENTA

Aleshin, Yu.D. ; Prostova, L.A. ;
ITEP-40-1987, 1987.
Inspire Record 245880 DOI 10.17182/hepdata.40095

None

2 data tables
Table 1

No description provided.

Table 2

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Observation of the Tensor X (1810) Meson in 300-{GeV} Central $\pi^- N$ Collisions (In Russian)

The IHEP-IISN-LANL-LAPP-PISA collaboration Alde, D. ; Bellazzini, R. ; Binon, F.G. ; et al.
Sov.J.Nucl.Phys. 47 (1988) 810-812, 1988.
Inspire Record 254776 DOI 10.17182/hepdata.10167

None

2 data tables
Table 1

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Table 2

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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

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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

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Table 3

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2.22-{GeV} $\eta \eta^\prime$ Structure Observed in 38-{GeV}/$c$ and 100-{GeV}/$c \pi^- p$ Collisions

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP) collaboration Alde, D. ; Binon, F. ; Bricman, C. ; et al.
Phys.Lett.B 177 (1986) 120, 1986.
Inspire Record 230300 DOI 10.17182/hepdata.40940

A structure has been observed at 2220 MeV in the mass spectrum of ηη ′ systems produced by 38GeV/ c and 100 GeV/ c ′ negative pions on protons. The angular distribution of the decay products shows that this structure is presumably a spin J ⩾ 2 meson.

2 data tables
Table 1

No description provided.

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Study of a Possible Exotic $\phi \pi^0$ State With a Mass of About 1.5-{GeV}/$c^2$

Bityukov, S.I. ; Dzhelyadin, R.I. ; Dorofeev, V.A. ; et al.
Phys.Lett.B 188 (1987) 383, 1987.
Inspire Record 233160 DOI 10.17182/hepdata.10556

New data have been obtained on a resonance in the ϕπ 0 system, the C meson, which is formed in the π − p → ϕπ 0 n charge-exchange reaction. The experiment has been performed at the Serpukhov 70 GeV accelerator. The mass and the width of the resonance are measured to be M =1480±40 MeV , Γ =130±60 MeV . The production cross section is determined at a π − momentum of 32.5 GeV / c : σ ( π − p → Cn )· BR ( C → ϕπ 0 )=40±15 nb . The C(1480) meson has an isospin I =1 and spin-parity J PC =1 − − . It is strongly coupled to the ϕπ 0 channel and is considered as a possible exotic meson.

3 data tables
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Table 3

THE ACCEPTANCE CORRECTED DISTRIBUTION.


CORRELATING CUMULATIVE PROTONS IN HADRON - NUCLEAR INTERACTIONS

Bayukov, Yu.D. ; Vlasov, A.V. ; Vorobev, L.S. ; et al.
ITEP-86-99, 1986.
Inspire Record 231057 DOI 10.17182/hepdata.40094

None

1 data table
Table 1

No description provided.


SEARCH FOR EXOTIC BARYON RESONANCES WITH ISOSPIN I = 5/2 IN pi+ p REACTIONS AT 3.94-GeV/c pi+ MESON MOMENTA

Arefev, A.V. ; Bayukov, Yu.D. ; Grishuk, Yu.G. ; et al.
ITEP-86-150, 1986.
Inspire Record 234870 DOI 10.17182/hepdata.40112

None

1 data table
Table 1

No description provided.