Spin alignment of [formula omitted] mesons produced in neutron-carbon interactions

A.N Aleev,I.M Ivanchenko,A.G Skripnichuk,T.S Grigalashvili,A.A Lavrentyev,A.L Lyubimov,N.N Karpenko,N.S Amaglobeli,T Preda,T.V Khristova,M.V Kopadze,A.A Panacik,A.P Bugorski,D.T Madigojin,Z.I Kojenkova,T Ponta,Yu.A Kretov,Z.M Ivanchenko,V Kekelidze ,G Tatishvili ,C Cheshkov ,N Kuzmin ,A Morozov ,Mikhail Kapishin ,A Tkatchev ,A S Kurilin ,V P Balandin ,A Gaponenko ,N Lomidze ,N Molokanova ,I Kosarev ,Yu Potrebenikov ,R Kvatadze ,A A Loktionov ,A Mestvirishvili ,V Spaskov ,I.M Geshkov,L.A Slepets,P Hristov,A Zinchenko

doi:10.1016/s0370-2693(00)00704-8

Spin alignment of [formula omitted] mesons produced in neutron-carbon interactions

A.N Aleev, I.M Ivanchenko + Show 38 more

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https://doi.org/10.1016/s0370-2693(00)00704-8

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Journal: Physics Letters B	Publication Date: Jul 1, 2000
Citations: 13

Affiliation: Joint Institute for Nuclear Research, Georgian National Academy of Sciences, Tbilisi State University, Institutul de Fizică Atomică, Institute for High Energy Physics

#Neutron-carbon Interactions #Serpukhov Accelerator + Show 8 more

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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<0.40 at 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.

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