P. Hristov
Joint Institute for Nuclear Research
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Physics Letters B | 2000
A. N. Aleev; N. S. Amaglobeli; V. P. Balandin; A.P. Bugorski; C. Cheshkov; A. Gaponenko; I. M. Geshkov; T. S. Grigalashvili; P. Hristov; I.M. Ivanchenko; Z. M. Ivanchenko; M. N. Kapishin; N. Karpenko; V. Kekelidze; T.V. Khristova; Z.I. Kojenkova; M.V. Kopadze; I. G. Kosarev; Yu.A. Kretov; A.S. Kurilin; N. Kuzmin; R. Kvatadze; A.A. Lavrentyev; A. A. Loktionov; N. Lomidze; A.L. Lyubimov; D.T. Madigojin; A. S. Mestvirishvili; N. Molokanova; A. Morozov
Abstract A new precise measurements of spin density matrix element ρ 00 of K ∗ (892) ± mesons produced inclusively in neutron-carbon interactions at ∼60 GeV have been carried out in the EXCHARM experiment at the Serpukhov accelerator. The values of ρ 00 obtained in the transversity frame are 0.393±0.011(stat)±0.018(sys) for K ∗ (892) + . An upper limit ρ 00 CL =90% has been obtained for K ∗ (892) − . Significant P T dependence of ρ 00 has been observed in K ∗ (892) + production. The investigation has been carried out at the Laboratory of Particle Physics, JINR.A new precise measurements of spin density matrix element
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