منابع مشابه
Λ , Λ polarization and spin transfer in lepton deep - inelastic scattering
The flavor and helicity distributions of the Λ and Λ hyperons for both valence and sea quarks are calculated in a perturbative QCD (pQCD) based model. We relate these quark distributions to the fragmentation functions of the Λ and Λ, and calculate the z-dependence of the longitudinal spin transfer to the Λ and Λ in lepton deepinelastic scattering (DIS). It is shown that the spin transfer to the...
متن کاملΛ Scattering Phase shifts and CP violation in Ξ → π Λ Decay
CP violating signals in weak Ξ → πΛ decay require the knowledge of πΛ Sand P-wave scattering phases at m Ξ center-of-mass energy. We have calculated these phases in baryon chiral perturbation theory with ground-state Σ in s and u channels and 3 2 + Σ(1385) in the u channel. We do not treat the baryons as heavy. We find δ S = −17.6 o and δ P = −3.1 o with the central value of the strong coupling...
متن کاملΛ-Neutron Scattering Lengths from Radiative K− Capture
Radiative capture of the K by the deuteron is examined as a reaction for measurement of the Λ-neutron scattering lengths. Using the final state interaction, analogous to measurements of the radiative capture of pions by deuterium, the scattering lengths of both the triplet and singlet Λ-n interaction can be inferred. The problem of the separation of these two fundamental parameters without and ...
متن کاملλ-Symmetry method and the Prelle-Singer method for third-order differential equations
In this paper, we will obtain first integral, integrating factor and λ-symmetry of third-order ODEs u ⃛=F(x,u,u ̇,u ̈). Also we compare Prelle -Singer (PS) method and λ-symmetry method for third-order differential equations.In this paper, we will obtain first integral, integrating factor and λ-symmetry of third-order ODEs u ⃛=F(x,u,u ̇,u ̈). Also we compare Prelle -Singer (PS) method and λ-symmetry m...
متن کاملCan the Λ π scattering phase shifts be large ?
Motivated by the presence of nearby thresholds in other baryon-meson channels with I = 1 and S = −1, we investigate whether the Λπ scattering phase shifts at a center-of-mass energy equal to the Ξ mass could be larger than suggested by lowest-order chiral perturbation theory. Within a coupled-channel K-matrix approach, we find that the S-wave phase shift could be as large as −7 • .
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2016
ISSN: 1029-8479
DOI: 10.1007/jhep06(2016)101