Resonance structures in the Lambda(Lambda)over-bar system

Authors
Bolonkin, BV Bugorskii, AP Vladimirskii, VV Grigor'ev, VK Grishin, AP Erofeeva, ON Katinov, YV Korol'kov, IY Lisin, VI Luzin, VN Nozdrachev, VN Sokolovskii, VV Tikhomirov, GD Shkurenko, YP
Citation
Bv. Bolonkin et al., Resonance structures in the Lambda(Lambda)over-bar system, JETP LETTER, 72(4), 2000, pp. 166-170
Citations number
20
Categorie Soggetti
Physics
Journal title
JETP LETTERS
ISSN journal
00213640 → ACNP
Volume
72
Issue
4
Year of publication
2000
Pages
166 - 170
Database
ISI
SICI code
0021-3640(2000)72:4<166:RSITLS>2.0.ZU;2-S
Abstract
The results of studying the Lambda<(Lambda)over bar> system produced in the reaction pi(-)p --> Lambda<(Lambda)over bar>n at a pi(-)-meson energy of 4 0 GeV are reported. Experimental data (similar to 2300 events) were obtaine d on the ITEP 6-meter spectrometer with a beam of the IHEP U-70 accelerator . The invariant-mass spectra for the events dominated by the singlet or tri plet Lambda<(Lambda)over bar> states were found to differ considerably from each other. The data give evidence for the existence of resonance states o f the Lambda<(Lambda)over bar> system in the mass regions near 2.3, 2.5, an d 2.8 GeV. (C) 2000 MAIK "Nauka/Interperiodica".