HEPData Search

The invariant mass spectrum of neutral meson states from π − p interactions at 40 GeV/ c incident momentum has been investigated in a high statistics experiment performed at the 70 GeV IHEP accelerator. To detect the high energy photons coming from the produced neutral states, a hodoscope spectrometer with a computer on-line was used. A clear structure on the mass spectrum of dipions produced in the reaction π − p→π°π°n is observed at 2 GeV. The decay angular distributions show in this mass region the variation with mass typical of a state with a spin J = 4. The mass of the observed meson is found to be M = (2020±30)MeV and the estimate of the full width is (180±60) MeV.

1 data table match query

Table 1

No description provided.

Observation of Backward Production of Sigma- (1385) Resonance in Quasi Two Particle Reactions pi- p --> K+ (K+) Sigma*- (1385) at 4.35-GeV/c and 4.85-GeV/c Momenta

Aleshin, Yu.D. ; Arutyunyants, G.A. ; Kiselevich, I.L. ; et al.

Sov.J.Nucl.Phys. 24 (1976) 519, 1976.

Inspire Record 109020 DOI 10.17182/hepdata.19078

None

1 data table match query

Table 1

No description provided.

pi- p --> f0 n Process and the Optical Model

Guzhavin, V.M. ; Garanina, T.A. ; Dubovikov, M.S. ; et al.

Yad.Fiz. 23 (1976) 123-129, 1976.

Inspire Record 113185 DOI 10.17182/hepdata.19092

None

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

The Reaction pi- p ---> eta n at High-Energies

Dahl, O.I. ; Johnson, R.A. ; Kenney, R.W. ; et al.

Phys.Rev.Lett. 37 (1976) 80, 1976.

Inspire Record 108647 DOI 10.17182/hepdata.21028

Measurements on the reaction π−p→ηn have been carried out at Fermilab with beam energies from 20 to 200 GeV in the same experiment in which pion charge-exchange scattering was studied. The differential cross sections have a pronounced dip in the forward direction. The data can be described well by a simple Regge-pole model but the resulting A2 trajectory is not degenerate with the ρ trajectory extracted from the charge-exchange data.

3 data tables match query

Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////).

Pion Charge Exchange Scattering at High-Energies

Barnes, A.V. ; Mellema, D.J. ; Tollestrup, A.V. ; et al.

Phys.Rev.Lett. 37 (1976) 76, 1976.

Inspire Record 108646 DOI 10.17182/hepdata.21046

We report on a study of pion charge-exchange scattering carried out at Fermilab in the energy range 20 to 200 GeV. The results can be described remarkably well by a simple Regge-pole model. The charge-exchange cross sections in the forward direction lead to a prediction for the difference in total cross sections of π−p and π+p which is in satisfactory agreement with direct measurements of this difference in another experiment at Fermilab.

3 data tables match query

Table 1

Axis error includes +- 0.0/0.0 contribution (?////).

Table 2

Axis error includes +- 0.0/0.0 contribution (?////).

Table 3

Axis error includes +- 0.0/0.0 contribution (?////).

The Reaction pi- p --> omega N at Momenta from 20-GeV/c to 200-GeV/c

Dahl, O.I. ; Johnson, R.A. ; Kenney, R.W. ; et al.

Phys.Rev.Lett. 38 (1977) 54, 1977.

Inspire Record 110620 DOI 10.17182/hepdata.20987

The reaction π−p→ωn in the beam-momentum range from 20 to 200 GeV/c has been studied using data acquired at Fermilab. In this Letter, the integral and differential cross sections for this reaction are presented. The integral cross sections are considerably larger than those previously reported. The differential cross sections can be reproduced quite easily by Regge models. As predicted by such models, natural-parity exchange dominates production throughout this energy region.

2 data tables match query

Table 1

D(SIG)/DT IS AVERAGE OVER T INTERVAL WITH NO FINITE-BIN-WIDTH CORRECTIONS.

Table 2

No description provided.

Investigation of the reaction pi- p ---> eta n at momenta up to 40-GeV/c

The Serpukhov-CERN collaboration Apel, W.D. ; Bertolucci, E. ; Bushnin, Yu.B. ; et al.

Sov.J.Nucl.Phys. 25 (1977) 194-197, 1977.

Inspire Record 118649 DOI 10.17182/hepdata.19079

None

1 data table match query

Table 1

No description provided.

Reaction pi- p --> eta n at Large Momentum Transfer

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K. ; Bertolucci, E. ; et al.

Sov.J.Nucl.Phys. 27 (1978) 82-83, 1978.

Inspire Record 119329 DOI 10.17182/hepdata.11051

None

3 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Investigation of pi- p --> pi0 n Reaction at Large Momentum Transfer

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Phys.Lett.B 72 (1977) 132, 1977.

Inspire Record 121448 DOI 10.17182/hepdata.39780

New results on a high statistics measurement of pion-nucleon charge exchange scattering at 40 GeV/ c , extending in momentum transfer up to − t = 1.8 (GeV/ c ) 2 , are reported and compared with an optical impact parameter model, together with previous data for the reaction π − p → ηn at the same energy. The imaginary part of the pole trajectory b 0 ( s ) is determined from the slope of the tangent to the maxima of (−t) 1 2 d σ d t . The linear increase of Im b 0 ( s ) with log s , which has been observed at low energies, continues up to 40 GeV/ c .

1 data table match query

Table 2

AT SMALL -T, THE BINNING TENDS TO SMEAR OUT THE FORWARD DIP.

Observation of A Meson x --> 2 gamma, with Mass 2.85-GeV/c**2, Produced in the Charge Exchange Reaction pi- p --> x n at 40-GeV/c

Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Phys.Lett.B 72 (1978) 500-502, 1978.

Inspire Record 122151 DOI 10.17182/hepdata.27481

The invariant mass spectrum of neutral final states produced in π − p charge-exchange scattering at 40 GeV/ c has been studied, searching for heavy particles decaying in 2γ. A peak is observed around 2.85 GeV/ c 2 . The cross section of the reaction π − p→X(2.85)+n, times the branching ratio of the X→2 γ decay, is measured to be σ × BR ⋍ 2 × 10 −34 cm 2 .

1 data table match query

Table 1

MEAN VALUE OF -T = 0.28 +- 0.04 GEV**2.

Inclusive eta Production at Large Transverse Momenta

Donaldson, G.J. ; Gordon, H.A. ; Lai, K.-W. ; et al.

Phys.Rev.Lett. 40 (1978) 684, 1978.

Inspire Record 122477 DOI 10.17182/hepdata.20917

We have measured the ratio of inclusive production of η to π0 at transverse momenta above 1.5 GeV/c. Results are presented for various meson and proton beams with momenta of 100, 200, and 300 GeV/c incident upon a hydrogen target. The ηπ0 production ratio is found to be independent of incident beam momentum and of the transverse and longitudinal momenta of production. The ratio for pion- and proton-induced reactions is 0.44 ± 0.05; for kaons, it is 0.74 ± 0.12.

11 data tables match query

Table 1

No description provided.

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No description provided.

Table 3

No description provided.

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Reaction $\pi^- p \to \eta n$ in the 15-{GeV}/$c$ to 40-{GeV}/$c$ Momentum Range

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Nucl.Phys.B 152 (1979) 1, 1979.

Inspire Record 133409 DOI 10.17182/hepdata.41487

A high-statistics measurement of the reaction π − p→ η n; η →2 γ has been performed at the 70 GeV Serpukhov accelerator for 15, 20, 25, 30 and 40 GeV/ c incident pion momentum using the NICE set-up with its associated 648-channel hodoscope spectrometer for γ-ray detection. It is found that the spin-flip and non-spin-flip amplitudes can be parametrized, for small | t |, as exponentials with the same slopes to within a few percent. For | t | ≳ 1 (GeV/ c ) 2 there is a break in the differential cross section. In addition, the A 2 effective trajectory deviates markedly for | t | ≳ 1 GeV/ c ) 2 from the linear behaviour valid for smaller | t |.

3 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Reaction $\pi^- p \to \eta^\prime n$ in the 15-{GeV}/$c$ - 40-{GeV}/$c$ Momentum Range

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Phys.Lett.B 83 (1979) 131, 1979.

Inspire Record 141023 DOI 10.17182/hepdata.49657

Measurements were made of the cross section of the reactions π − p → ν ′(958)n, η ′ → 2 γ at momenta at 15, 20, 25, 30 and 40 GeV/c. The experiment was carried out on the IHEP 70 GeV accelerator using the 648 channel hodoscope spectrometer NICE for γ-ray detection. A total of 6000 η′ mesons were recorded. A sharp drop is seen in the differential cross section for t → 0. The dependences of the differential cross sections for the π − p → η ′n and π − p → η n on t are identical. On the basis of the ratio of the cross sections for these reactions at t = 0, i.e. R( η′ n ) t=0 = 0.55 ± 0.06 , the singlet-octet mixing angle for pseudoscalar mesons was determined to be β = −(18.2 ± 1.4)°.

2 data tables match query

Table 5

DATA AT 20, 25 AND 30 GEV/C SUMMED AND NORMALIZED TO THE CROSS SECTION AT 25 GEV/C.

Table 7

DATA AT 20, 25 AND 30 GEV/C SUMMED AND NORMALIZED TO THE CROSS SECTION AT 25 GEV/C.

Reaction $\pi^- p \to \pi^0 n$ in the 15-{GeV}/$c$ - 40-{GeV}/$c$ Momentum Range

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Nucl.Phys.B 154 (1979) 189, 1979.

Inspire Record 140776 DOI 10.17182/hepdata.34746

A high statistics measurement of the reaction π − p → π 0 n has been performed at the Serpukhov accelerator for 15, 20, 25, 30 and 40 GeV/ c incident pion momentum using the NICE set-up with its associated 648-channel hodoscope spectrometer for γ-ray detection. More than 3 million charge-exchange events have been recorded in total. It is found that the spin-flip and non-spin-flip amplitudes can be parametrized, for small | t |, as exponentials with the same slopes to within a few percent. Also the behaviour of the differential cross section for small and medium | t | agrees with the prediction of a geometrical s -channel model which describes binary reactions in terms of a complex pole b 0 ( s ). The imaginary part of this universal pole, Im b 0 ( s ), has been determined and found to be growing logarithmically with s .

0 data tables match query

Reaction $\pi^- p \to \omega n$ in the 15-{GeV}/$c$ - 40-{GeV}/$c$ Momentum Range

The Serpukhov-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Krüger, M. ; et al.

Lett.Nuovo Cim. 25 (1979) 493, 1979.

Inspire Record 142561 DOI 10.17182/hepdata.37383

None

0 data tables match query

Analysis of the Reaction $\pi^- P \to \pi^0 \eta N$ at 40-{GeV}/c Beam Momentum

Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Nucl.Phys.B 193 (1981) 269-286, 1981.

Inspire Record 173075 DOI 10.17182/hepdata.34254

The reaction π − p→ π 0 ηn ↳2y ↳2y has been analyzed using data of an experimental performed at the 70 GeV accelerator, with the NICE 648 channel hodoscope spectrometer for γ ray detection. Events with 4 γ seen are used for the analysis. A method is applied, which allows the determination of the number of π 0 η events for each mass, cos θ GJ and t bin. Mass spectra, t distributions and decay angular distributions for the π 0 η system are presented. The cross section for the production of A 2 0 is found to be 2.7 ± 1.1 μ b at 40 GeV/ c beam momentum. No indication of a resonant 1 − state in the π 0 η system is observed, in spite of the fact that this state is allowed for the π 0 η system on the same footing as the observed 0 + and 2 + resonances.

1 data table match query

Table 1

ERROR INCLUDES UNCERTAINTIES IN SEVERAL CORRECTIONS AND IN BACKGROUND SUBTRACTION.

pi0 AND eta MESONS PRODUCTION IN THE HADRON - NUCLEAR INTERACTIONS AT 10.5-GeV/c

Akimenko, S.A. ; Bannikov, A.V. ; Belousov, V.I. ; et al.

Sov.J.Nucl.Phys. 38 (1983) 732, 1983.

Inspire Record 189187 DOI 10.17182/hepdata.41132

None

14 data tables match query

Table 1

No description provided.

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No description provided.

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Observation of Scalar $G(1590)$ Meson Decaying Into $\eta \eta$

The Serpukhov-Brussels-Annecy(LAPP) collaboration Binon, F.G. ; Bricman, C. ; Gouanere, M. ; et al.

Yad.Fiz. 38 (1984) 934-944, 1984.

Inspire Record 191942 DOI 10.17182/hepdata.37464

None

1 data table match query

Table 1

No description provided.

Observation of a Spin 6 Neutral Meson R (2510)

The Serpukhov-Brussels-Annecy(LAPP) collaboration Binon, F.G. ; Donskov, S.V. ; Duteil, P. ; et al.

Lett.Nuovo Cim. 39 (1984) 41, 1984.

Inspire Record 191410 DOI 10.17182/hepdata.37330

In a high-statistics experiment (200 events/nanobarn) performed at the 70 GeV IHEP accelerator, a new dipion resonance has been observed in π−p collisions at 38 GeV/c momentum. The gamma-rays in reaction π−p → M0n, M0 → π0π0 → 4γ have been detected in the hodoscope spectrometer GAMS-2000. The new meson, r(2510), has a mass (2510±30) MeV/c2, a width (240±60) MeV/c2 and spin-parityJPC=6++. The production cross-section of the f, h and r mesons decreases exponentially with spin like exp [−0.9J].

1 data table match query

Table 1

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 match query

Table 1

No description provided.

ANALYSIS OF THE REACTION PI- P ---> PI0 ETA N AT 40-GEV/C BEAM MOMENTUM.

The SERPUKHOV-CERN collaboration Apel, W.D. ; Augenstein, K.H. ; Bertolucci, E. ; et al.

Yad.Fiz. 41 (1985) 126-136, 1985.

Inspire Record 218766 DOI 10.17182/hepdata.2594

None

6 data tables match query

Table 1

No description provided.

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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 match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

FORWARD PRODUCTION OF pi0 MESONS IN THE MANY PARTICLE REACTION pi- p ---> pi0 pi+ pi- pi- p AT 4.5-GeV/c MOMENTA

Aleshin, Yu.D. ; Vovk, A.I. ; Drutskoi, A.G. ; et al.

Yad.Fiz. 46 (1987) 1701-1705, 1987.

Inspire Record 233548 DOI 10.17182/hepdata.40132

None

1 data table match query

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 match query

Table 1

No description provided.

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 match query

Table 1

No description provided.

Table 2

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 match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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 match query

Table 1

No description provided.

Inclusive $\pi^0$ and Eta0 Production in $\pi^- p$ Interactions at 360-{GeV}/$c$

The NA27 & LEBC-EHS collaborations Aguilar-Benitez, M. ; Bailly, J.L. ; Baland, J.F. ; et al.

Z.Phys.C 34 (1987) 419, 1987.

Inspire Record 234876 DOI 10.17182/hepdata.15777

Theπ0 andη0 production is studied inπ−p interactions at 360 GeV/c. The cross section forπ0 production in the forward hemisphere (X>0) isσ(π0)=(49.7 ± 1.0 ± 1.1) mb and for η withX>0.1,Nch>2,σ(η0)=(3.1 ± 0.5) mb. The ratio of theπ0 toη0 cross section forX>0.1,Nch>2 isσ(π0)/σ(η0). Results on FeynmanX andpT distributions are presented. The data were obtained using the European Hybrid Spectrometer EHS and the bubble chamber LEBC at CERN.

6 data tables match query

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CROSS-SECTIONS OF STRANGE PARTICLE PRODUCTION CHANNELS IN PI+ P INTERACTIONS AT P = 4.23-GEV/C. (IN RUSSIAN)

Drutskoi, A.G. ; Mikhailichenko, V.I. ; Nikitin, S.Ya. ; et al.

Moscow Inst. Theor. Exp. Phys. GKAE - ITEF-87-112 (87,rec.Oct.) 10 p, 1987.

Inspire Record 254116 DOI 10.17182/hepdata.40093

None

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

ELASTIC SCATTERING OF pi- AND K- MESONS ON PROTONS AT 43-GeV/c MOMENTUM

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

Sov.J.Nucl.Phys. 48 (1988) 85, 1988.

Inspire Record 253399 DOI 10.17182/hepdata.38881

None

3 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

FROM EXPONENTIAL FIT OF D(SIG)/D(T) IN RANGE 0. < ABS(T) < 1. GEV.

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 match query

Table 1

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Production of $G(1590)$ in 300-{GeV} Central $\pi^- N$ Collisions

The Serpukhov-Brussels-Los Alamos-Annecy(LAPP)-Pisa collaboration Alde, D. ; Bellazzini, R. ; Binon, F.G. ; et al.

Phys.Lett.B 201 (1988) 160, 1988.

Inspire Record 250393 DOI 10.17182/hepdata.6493

Significant production of G(1590), a scalar glueball candidate, is observed in a study of η pairs produced in π−N central collisions at 300 GeV/ c .

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Evidence for a 1-+ Exotic Meson

The IHEP-Brussels-Los Alamos-Annecy(LAPP) collaboration Alde, D. ; Binon, F.G. ; Boutemeur, M. ; et al.

Phys.Lett.B 205 (1988) 397, 1988.

Inspire Record 260839 DOI 10.17182/hepdata.29972

A non q q ,J PC = 1 −+ , I G =1 − meson has been observed in the study of the exclusive reaction π − p→π 0 ηn at 100 GeV. Its mass is (1406±20) MeV. Its width is (180±30) MeV.

1 data table match query

Table 2

No description provided.

OBSERVATION OF AN EXOTIC MESON OF 1.9-GeV MASS DECAYING INTO eta-prime eta

The IFVE-Brussels-Annecy-Los-Alamos collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.

Sov.J.Nucl.Phys. 48 (1988) 1035, 1988.

Inspire Record 264474 DOI 10.17182/hepdata.40730

None

2 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Evidence for a 1.9-{GeV} Meson Decaying Into $\eta \eta^\prime$

The IFVE-Brussels-Annecy-Los Alamos collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.

Phys.Lett.B 216 (1989) 447, 1989.

Inspire Record 267048 DOI 10.17182/hepdata.29856

Evidence for a new meson decaying into ηη′ has been found in 38 GeV π − p charge-exchange interactions. The mass and the width of this meson are (1917 ± 15) MeV and (90 −50 +35 ) MeV, respectively. Possible spin and parity assignments are J PC = 0 ++ , 1 −+ or 2 ++ , isospin and G -parity are I G = 0 + . The t -dependence of the differential cross section follows an exponential behaviour exp( bt with a small slope: b = (2±1) (GeV/ c ) −2 .Upper limits on its decay into ππ, ηη and K K exotic interpretation of this meson.

1 data table match query

Table 1

No description provided.

Study of $\omega \omega$ Systems Produced in 38-{GeV}/$c \pi^- p$ Collisions

The IHEP-IISN-LANL-LAPP-TSUIHEP collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.

Phys.Lett.B 216 (1989) 451, 1989.

Inspire Record 267049 DOI 10.17182/hepdata.29857

The π − p→ ωω n reaction has studied for the first time at the 70 GeV IHEP accelerator. The six photons from the decay of the two ω mesons were detected in GAMS-2000, a hodoscope multi-photon spectometer. Two resonances decaying into ωω,X (1640) and X(1960), have been observed. Their quantum numbers are J PC =2 ++ , I G =0 + . The reaction is dominated by the one-pion exchange mechanism. The production cross sections σ. BR(X→ ωω ) are 0.65±0.15 μ b and 1.0±0.2 μ b, respectively.

2 data tables match query

Table 1

X(1640) IS A JPC - 2++, IG - 0+ MESON WITH MASS 1643+-7 MEV.

Table 2

X(1960) IS A JPC - 2++, IG - 0+ MESON WITH MASS 1956+-20 MEV.

Resonance states, including exotics in reactions pi+ p ---> n 4 pi+ 2 pi- at 4.2-GeV/c beam momentum

Brovkin, L.Yu. ; Kiselevich, I.L. ; Mikhailichenko, V.I. ; et al.

ITEP-90-110, 1990.

Inspire Record 303723 DOI 10.17182/hepdata.40019

None

3 data tables match query

Table 1

No description provided.

Table 2

THE RESONANCE PARAMETERS: MASS=1437 +-3 MEV, WIDTH=169 +-2 MEV.

Table 3

THE RESONANCE PARAMETERS: MASS=1418 +-3 MEV, WIDTH=60 +-5 MEV.

The Reaction pi+ p ---> p 2 pi+ pi- at a beam momentum of 4.2-GeV/c: Cross-sections for resonance production in the final state

Brovkin, L.Yu. ; Kiselevich, I.L. ; Mikhailichenko, V.I. ; et al.

Sov.J.Nucl.Phys. 55 (1992) 549-553, 1992.

Inspire Record 343896 DOI 10.17182/hepdata.39978

None

2 data tables match query

Table 1

No description provided.

Table 2

FOR PI- MESON: THETA(RF=LAB)=<75 DEGREE.

Spin-parity analysis of eta pi0 pi0 system in pi- p charge exchange reaction at 100-GeV/c by Zemach method.

The GAMS collaboration Alde, D. ; Binon, F.G. ; Bricman, C. ; et al.

IFVE-96-39, 1996.

Inspire Record 425699 DOI 10.17182/hepdata.40710

None

1 data table match query

Table 1

No description provided.

Study of the pi0 pi0 system with the GAMS-4000 spectrometer at 100-GeV/c.

The GAMS collaboration Alde, D. ; Binon, F.G. ; Boutemeur, M. ; et al.

Eur.Phys.J.A 3 (1998) 361-371, 1998.

Inspire Record 474862 DOI 10.17182/hepdata.43500

The πpi-system produced in the charge exchange π−p-reaction at 100 GeV/c has been studied. The experiment was performed at the CERN SPS accelerator with the multiphoton hodoscope spectrometer GAMS-400

3 data tables match query

Table 1

No description provided.

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No description provided.

Table 3

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Inelastic Interactions Between 6.8-BeV/c $\pi^-$ Mesons and Nucleons

Birger, N.G. ; Wang, Kangchang ; Trka,Z. ; et al.

Sov.Phys.JETP 14 (1962) 1043-1052, 1962.

Inspire Record 1387796 DOI 10.17182/hepdata.17077

An analysis was made of 355 interactions between 1r- mesons and nucleons. The momentum and angular distributions of the secondary charged particles were measured. Information on 1r0 mesons produced in the interactions has been obtained. The experimental data are compared with the statistical theory. The results suggest that peripheral interactions may exist. In events of low multiplicity (two-prong cases) "one-meson" peripheral interactions play an important role, while in events of large multiplicity an important role is played by interactions not of the one-meson type, among which also central collisions are possible.

2 data tables match query

Table 1

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Table 2

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