hyperon as helicity analyser ofsquark inBdecay
نویسندگان
چکیده
منابع مشابه
Λ hyperon as helicity analyzer of s quark in B decay
We explore how well one can probe the s quark chirality of the fundamental weak interaction of nonleptonic B decay using the spin-analyzing property of the Λ hyperon. We present the prediction of the Standard Model as quantitatively as possible in a perturbative QCD picture avoiding detailed form-factor calculation involving quark mass corrections. A clean test of chirality will be possible wit...
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It is shown that Λ-hyperon fragmentation in charged lepton deep inelastic scattering (DIS) on a polarized nucleon target can provide sensitive information concerning the quark helicity and transversity distributions for both nucleon and Λ-hyperon at large x. Numerical predictions are given for the spin transfers of the produced Λ, when the target nucleon is polarized either longitudinally or tr...
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EVIDENCE concerning frequency analysis which was drawn together from several sources allowed the suggestion to be made that the design of the cochlea—i.e. its internal geometry—was itself a frequency analyser to a first approximation (Naftalin, 1965). Two sets of biological observations which seem to be of fundamental importance from the physical (acoustic) point of view may be cited as offerin...
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Radiative decays of decuplet hyperons and octet hyperon charge radii are evaluated in a chiral constituent quark model emphasizing the role of exchange currents. Exchange currents largely cancel for the M1 decay amplitudes, while they dominate the E2 amplitude. Due to the pseudoscalar meson cloud the charge radii of Σ and Ξ are almost as large as the proton radius, in agreement with recent expe...
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We discuss the properties of the hyperon-hyperon interactions in the recent Nijmegen ESC08 potential, in particular the importance of the coupled-channel structure and related existence of bound states. Brueckner-Hartree-Fock calculations of hypernuclear matter employing these interactions are presented and the structure of hyperon (neutron) stars within this approach is computed. Low maximum m...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 2003
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/29/6/702