当前位置： 文档下载 > 所有分类 > 外语学习 > 法语学习 > Polarization in B_c - Jpsi mu nuWe study the polarization of the J/\psi meson of the B_c -> J/\psi mu nu decay process, followed by J/\psi -> mu+ mu-, with the help of the heavy-quark spin symmetry formalism (HQSS). We adapt the ISGW wave function. Due to the clean signature of the decay
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aPolarizationinB¯c→J/ψµν¯µMyoung-TaekChoi DepartmentofPhysics,HanyangUniversity,Seoul133-791,Ji-HoJangandJae-KwanKimDepartmentofPhysics,KoreaAdvancedInstituteofScienceandTechnology373-1Kusung-dong,Yusung-ku,Taejon305-701,Korea.WestudythepolarizationoftheJ/ψmesonoftheB¯c ,withthehelpoftheheavy-quark→spinJ/ψsymmetryµν¯µdecayprocess,followedbyJ/ψ→µ+µformalism(HQSS)ofJenkinsetal.[1]WeadapttheISGWwavefunction.Duetothecleansignatureofthedecaymode,measurementsofthepolarizationoftheJ/ψmesoncanplayaspecialroleinextracting|Vcbpredictionsofotherquark|,themodels.quarkmixing-matrixelement.Wecomparetheresultswiththe(PACSnumber:13.25.Hw)
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