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Resonance behavior of a K(S) K(S) system near the mass 1775-MeV.

Barkov, B.P. ; Baloshin, O.N. ; Batalova, N.V. ; et al.

JETP Lett. 68 (1998) 764-769, 1998.

Inspire Record 482985 DOI 10.17182/hepdata.16825

The preliminary results of an investigation of a system of two K S mesons in the mass interval 1600–1950 MeV are reported. The events were obtained on a 6-m magnetic spark spectrometer at ITEP in π − p interactions at 40 GeV, using a neutral trigger which suppressed both charged particles and γ rays. A peak of width ≃30 MeV with statistical significance not lower than six standard deviations is observed with momentum transfer selection |tu|0.23 GeV2 near the mass 1775 MeV of the K S K S system. The observed phenomena can be interpreted as the existence of one resonance with the indicated parameters, or two narrower resonances. In the latter case, their masses are 1768±1.5 and 1787±1.5 MeV. The widths of these states are comparable to the mass resolution of the spectrometer (∼5 MeV). Estimates of the product σ ⋅BR(K S K S ) give ∼1.5 and 2.5 nb, respectively, for the first and second states.

1 data table

Table 1

One or two resonances solutions are used.

DIFFRACTIVE DISSOCIATION OF NEUTRONS IN LAMBDA0 K0 ON HYDROGEN AT ABOUT 40-GeV ENERGY

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

JINR-P1-88-51, 1988.

Inspire Record 261900 DOI 10.17182/hepdata.38806

None

4 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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Quasielastic Neutrino and Anti-neutrinos Scattering: Total Cross-sections, Axial Vector Form-factor

Belikov, S.V. ; Bugorsky, A.P. ; Epshtein, V.Sh. ; et al.

Z.Phys.A 320 (1985) 625, 1985.

Inspire Record 195754 DOI 10.17182/hepdata.41105

Experimental results on the study of quasielastic reactionsvμn→μ−p and\(\bar v_u p \to \mu ^ +n\) in the energy range 3–30 GeV are presented in this paper. Spark chamber detector with Al filters has been exposed to the wide-band neutrino and antineutrino beams at Serpukhov. Neutrino and antineutrino data have been used to reconstruct the behaviour of axial-vector form-factorFA(Q2). We measured the total cross-sections as a function of energy. The parameterMA=(1.00±0.04) GeV/c2 has been determined under the assumption of the dipole parametrization and CVC hypothesis. Upper limit for the second class currents was estimated.

2 data tables

Table 1

Statistical errors only.

Table 2

Statistical errors only.