Λ and polarization in polarized DIS
نویسندگان
چکیده
منابع مشابه
INFNCA-TH0001 hep-ph/0001307 Λ and ¯ Λ polarization in polarized DIS
We consider the polarization of Λ+ Λ̄ baryons produced in polarized Deep Inelastic Scattering at leading order, with various spin configurations: longitudinally polarized leptons and unpolarized nucleon; unpolarized leptons and longitudinally or transversely polarized nucleons; longitudinally polarized leptons and nucleons. We show how the different results in the different cases are related to ...
متن کاملTransverse Λ Polarization in Semi-inclusive Dis
Extending a previous description of Λ and Λ̄ polarization in unpolarized p -p interactions, within a pQCD factorization scheme with new polarizing fragmentation functions, we give predictions for the transverse polarization of Λ’s and Λ̄’s in semi-inclusive DIS, both with neutral and charged currents. Comparison with existing data is not yet significant, but more experimental results are expected...
متن کاملIntrinsic Polarized Strangeness and Λ Polarization in Deep-Inelastic Production
We propose a model for the longitudinal polarization of Λ baryons produced in deep-inelastic lepton scattering at any xF , based on static SU(6) quark-diquark wave functions and polarized intrinsic strangeness in the nucleon associated with individual valence quarks. Free parameters of the model are fixed by fitting NOMAD data on the longitudinal polarization of Λ hyperons in neutrino collision...
متن کاملTransversity and Λ Polarization
Two related issues are discussed, which might be easily explored by present and future COMPASS experiments. The first one deals with the new world of transversity, the fundamental polarized parton distribution so far totally unknown. The second issue concerns Λ production in polarized semi-inclusive processes, with a measurement of the Λ polarization, which might give novel information on distr...
متن کاملRare Λ b → Λ l + l − Decays with Polarized Λ
We investigate the rare baryonic exclusive decays of Λb → Λll (l = e, μ, τ) with polarized Λ. Under the approximation of the heavy quark effective theory (HQET), in the standard model we derive the differential decay rates and various polarization asymmetries by including lepton mass effects. We find that with the long-distance effects the decay branching ratios are 5.3× 10 for Λb → Λll (l = e,...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics Letters B
سال: 2000
ISSN: 0370-2693
DOI: 10.1016/s0370-2693(00)00455-x