Accessing transversity with interference fragmentation functions
نویسندگان
چکیده
منابع مشابه
Addressing Transversity with Interference Fragmentation Functions
The class of interference fragmentation functions, arising from interference among different hadron production channels, is reconsidered. Their symmetry properties with respect to chiral transformations allow building spin asymmetries where the quark transversity distribution can be factorized out at leading twist. For the case of two leading spinless hadrons inside the same current jet, the pa...
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The observation of the quark transversity distribution requires another soft object sensitive to the quark's transverse spin. Dihadron fragmentation functions represent a convenient tool to analyze partonic spin, which can influence the angular distribution of the two hadrons. In particular, the so-called interference fragmentation functions can be used to probe transversity both in semi-inclus...
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We introduce twist-two quark interference fragmentation functions in helicity density matrix formalism and study their physical implications. We show how the nucleon’s transversity distribution can be probed through the final state interaction between two mesons (π+π−, KK, or πK) produced in the current fragmentation region in deep inelastic scattering on a transversely polarized nucleon. Submi...
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A new, preliminary global analysis of the experimental data on azimuthal asymmetries in SIDIS from HERMES and COMPASS collaborations, and in ee → h1h2X processes from the BELLE collaboration, is performed. The new data allow for a more precise determination of the Collins fragmentation function and of the transversity distribution function for u and d quarks, in comparison with the results of o...
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We derive the next-to-leading order splitting kernels for the scale evolution of fragmentation functions for transversely polarized quarks into transversely polarized hadrons. Very little is known so far about spin effects in fragmentation of partons into hadrons. An exception is semi-inclusive production of Λ baryons in e+e−, ep, or pp scattering, where the polarization of the Λ has been obser...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2002
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.65.074031