HEPData Search

The process γγ→π+π− was measured using the detector MD-1 at VEPP-4. The two-photon reactionse+e−, μ+ μ− and π+ π− pair production were separated using scintillation counters, Cherenkov counters and shower-range chambers. A radiation widthГγγ(f2(1270))=3.1±0.35±0.35 keV was obtained.

1 data table

Table 1

Data read from graph.

Study of fast p, anti-p yields in pi- Be interaction at 40-GeV/c with cumulative particle production

Antipov, Yu.M. ; Batarin, V.A. ; Bezzubov, V.A. ; et al.

IFVE-90-171, 1990.

Inspire Record 304399 DOI 10.17182/hepdata.40709

None

13 data tables

Table 1

CHARGED IS CUMULATIVE PI+-, OR K+-, OR P+-.

Table 2

CHARGED IS CUMULATIVE PI+-, OR K+-, OR P+-.

Table 3

No description provided.

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OBSERVATION OF SLOW PION PRODUCTION IN NUCLEUS NUCLEUS INTERACTIONS

Dubinina, A.I. ; Kolganova, E.D. ; Pozharova, E.A. ; et al.

JETP Lett. 48 (1988) 251-253, 1988.

Inspire Record 271948 DOI 10.17182/hepdata.16886

None

4 data tables

Table 1

BEAM NUCLEUS ARE MIXTURE OF NE AND MG.

Table 2

BEAM NUCLEUS ARE MIXTURE OF NE AND MG.

Table 3

BEAM NUCLEUS ARE MIXTURE OF NE AND MG.

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HADRONS AND GAMMAS ASSOCIATED TO DIMUONS AND J / psi PARTICLES IN pi- C INTERACTIONS AT 38-GeV/c

The RISK collaboration Jani, J. ; Mihalyi, Z. ; Nyitrai, G. ; et al.

JINR-E1-87-397, 1987.

Inspire Record 251044 DOI 10.17182/hepdata.9973

None

7 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Production of anti-D0 and D- Mesons in Neutron - Carbon Interactions at 40-GeV to 70-GeV

The BIS-2 collaboration Aleev, A.N. ; Arefev, V.A. ; Balandin, V.P. ; et al.

Z.Phys.C 37 (1988) 243, 1988.

Inspire Record 248611 DOI 10.17182/hepdata.9960

The production of$\bar D$ mesons in neutroncarbon interactions at 40–70 GeV/c has been investigated. The$\bar D$ mesons were detected via the hadronic decay modes$\bar D^0\to K^{* + } (892)\pi ^ -$ andD−→K*+(892)π−π−. In the kinematical regionxF>0.5 andpT<1 GeV/c the following inclusive cross sections were measured:$\sigma _{\bar D^0 }= (28 \pm 14)\mu b$ and$\sigma _{D^ -}= (28 \pm 13)\mu b$ per carbon nucleus. The invariant longitudinal momentum spectra can be described by (1−x)N with$N_{\bar D^0 }= 1.1 \pm 0.5 \pm 0.4$ and$N_{D^ -}= 0.8 \pm 0.4 \pm 0.4$ The transverse momentum spectra were parametrized by exp (−BpT2) with$B_{\bar D^0 }= (1.2_{ - 0.9}^{ + 1.1} )({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $ and$B_{D^ -}= (1.8_{ - 1.0}^{ + 1.3} )({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $.

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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INVESTIGATION OF COMPTON EFFECT ON pi MESON AND CHARGED PION POLARIZABILITY

The SIGMA-AYaKS & Dubna-Serpukhov-Tbilisi collaborations Antipov, Yu.M. ; Batarin, V.A. ; Bezzubov, V.A. ; et al.

JINR-P1-86-710, 1986.

Inspire Record 239905 DOI 10.17182/hepdata.9549

None

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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CHARGE PROPERTIES OF ANNIHILATION EXCLUSIVE REACTIONS IN anti-p p INTERACTIONS AT 32-GeV/c

Bogolyubsky, M.Yu. ; Kiryunin, A.E. ; Kotova, A.I. ; et al.

Yad.Fiz. 45 (1987) 1667, 1987.

Inspire Record 234595 DOI 10.17182/hepdata.10409

None

24 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

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

Table 1

No description provided.

Table 2

No description provided.

Table 3

THE ACCEPTANCE CORRECTED DISTRIBUTION.