HEPData Search

The angular distributions of secondary pions, protons, and deuterons originating from π−Pb interactions at an incident-pion momentum of 5 GeV/c was determined in a new run of measurements relying on track reconstruction. While showing a decrease over a large angular interval with increasing emission angle, the yield of cumulative particles of each species was found to be anomalously large near the backward direction.

3 data tables match query

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Searches for a narrow resonance in the p p pi- system.

Vorobev, L.S. ; Grishuk, Yu.G. ; Efremenko, Yu.V. ; et al.

Phys.Atom.Nucl. 61 (1998) 771-780, 1998.

Inspire Record 475393 DOI 10.17182/hepdata.17079

None

1 data table match query

Table 1

No description provided.

Polarization observables in double neutral pion photoproduction

The TAPS & CBELSA collaborations Seifen, T. ; Hartmann, J. ; Afzal, F. ; et al.

Eur.Phys.J.A 61 (2025) 173, 2025.

Inspire Record 2106042 DOI 10.17182/hepdata.137817

Measurements of target asymmetries and double-polarization observables for the reaction $γp\to pπ^0π^0$ are reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility (Bonn University) using the Bonn frozen-spin butanol (C$_4$H$_9$OH) target, which provided transversely polarized protons. Linearly polarized photons were produced via bremsstrahlung off a diamond crystal. The data cover the photon energy range from $E_γ$=650 MeV to $E_γ$=2600 MeV and nearly the complete angular range. The results have been included in the BnGa partial wave analysis. Experimental results and the fit agree very well. Observed systematic differences in the branching ratios for decays of $N^*$ and $Δ^*$ resonances are attributed to the internal structure of these excited nucleon states. Resonances which can be assigned to SU(6)$\times$O(3) two-oscillator configurations show larger branching ratios to intermediate states with non-zero intrinsic orbital angular momenta than resonances assigned to one-oscillator configurations.

24 data tables match query

T_2pi0(costh)

Target asymmetry for $\pi^0\pi^0$ as a function of the polar angle for bins of the incident photon energy in the range of $E_\gamma$ = 650-2600 MeV.

T_2pi0(m)

Target asymmetry for $\pi^0\pi^0$ as a function of the $\pi^0\pi^0$ invariant mass for bins of the incident photon energy in the range of $E_\gamma$ = 650-2600 MeV.

Pxy_2pi0(phi*)

Target asymmetry for $\pi^0\pi^0$ as a function of the $\phi^*$ angle for bins of the incident photon energy in the range of $E_\gamma$ = 650-2600 MeV.

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CROSS-SECTION FOR THE ANNIHILATION OF ANTI-PROTONS ON BE, C, AL, FE, CU, CD AND PB NUCLEI AT THE MOMENTA 1.26-GEV/C, 1.53-GEV/C, 1.76-GEV/C AND 2.5-GEV/C. (IN RUSSIAN)

Kuzichev, V.F. ; Lepikhin, Yu.B. ; Smirnitsky, V.A. ;

ITEF-89-060, 1989.

Inspire Record 283991 DOI 10.17182/hepdata.40021

None

1 data table match query

Table 1

No description provided.

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CM Energies (GeV)

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IRREGULARITIES IN ANGULAR DISTRIBUTION OF CUMULATIVE PARTICLES NEAR 180-DEGREES IN LAB

SOFT PI+ MESONS IN P A AND PI- A INTERACTIONS. (IN RUSSIAN)

RESULTS OF ELECTRONIC EXPERIMENTS IN STUDYING THE REACTION alpha (pi+-, p) + A (C, Al, Cu, Cd, Pb) ---> LAMBDA0 + X

ASSOCIATED PRODUCTION OF CUMULATIVE LAMBDA0 HYPERONS AND K0 MESONS

POLARIZATION OF EXCLUSIVE LAMBDA0 PARTICLES EMITTED FROM C, AL, CU, CD, PB NUCLEI AT 90-DEGREES IN LABORATORY SYSTEM. (IN RUSSIAN)

PRODUCTION OF SOFT PIONS IN H A INTERACTIONS

Observation of an anomaly in the angular distribution of cumulative hadrons near the backward direction.

Searches for a narrow resonance in the p p pi- system.

Polarization observables in double neutral pion photoproduction

CROSS-SECTION FOR THE ANNIHILATION OF ANTI-PROTONS ON BE, C, AL, FE, CU, CD AND PB NUCLEI AT THE MOMENTA 1.26-GEV/C, 1.53-GEV/C, 1.76-GEV/C AND 2.5-GEV/C. (IN RUSSIAN)