منابع مشابه
Fragmentation in DIS
The fragmentation properties in deep-inelastic scattering (DIS) at HERA are investigated in order to test perturbative QCD and quark fragmentation universality. Selected results for the inclusive single particle distributions and the angular two-particle correlations in the current region of the Breit frame are presented and compared to results from ee collisions. The extension of the DIS fragm...
متن کامل1/Q corrections in DIS fragmentation functions
The work described in the following article is largely motivated by the recent experimental interest in the study of hadronic final state momentum distributions in the current hemisphere of the Breit frame of DIS. The observable in question is similar to the hadronic energy distribution in ee annihilation and is related in an analogous manner to the universal parton to hadron fragmentation func...
متن کاملCharm Production and Fragmentation in Charged Current DIS
In charged current deep inelastic scattering charm is dominantly produced in scattering events on strange quarks, thereby allowing for an experimental determination of the nucleon’s strange sea density. A measurement of the energy spectrum of final state charm fragments (D-mesons) determines the charm fragmentation function at spacelike scales considerably below typical ee c.m.s. energies. NLO ...
متن کاملRenormalon Contributions to Fragmentation Functions in Non Singlet Dis
This talk discusses the power behaved corrections to fragmentation functions for the current jet in non-singlet deep inelastic scattering. These corrections are estimated by means of a renormalon model using a dispersive approach 8. The assumption of a universal infrared finite coupling enables us to provide quantitative estimates.
متن کاملTwo-hadron Inclusive Dis and Interference Fragmentation Functions
For the investigation of the nonperturbative nature of quarks and gluons inside hadrons we mainly rely on the information extracted from distribution (DF) and fragmentation functions (FF) in hard scattering processes. There are three fundamental quark DF that completely characterize the quark inside hadrons at leading twist with respect to its longitudinal momentum and spin: the momentum distri...
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ژورنال
عنوان ژورنال: Nuclear Physics B - Proceedings Supplements
سال: 1999
ISSN: 0920-5632
DOI: 10.1016/s0920-5632(99)00752-5