Abstract
By using a recently obtained set of Lambda fracture functions, we present predictions for Lambda production in the target fragmentation region of Semi-Inclusive Deep Inelastic Scattering in CLAS@12 GeV kinematics, supplemented with a conservative error estimates. We discuss a number of observables sensitive to the assumptions of the underlying theory and many of the assumptions of the proposed phenomenological model.
Highlights
The deep inelastic scattering cross section of a lepton l off a proton p, 69 Page 2 of 10Eur
Lambda hyperons are predominantly produced in the Semi-Inclusive Deep Inelastic Scattering (SIDIS) target fragmentation region and show a significant leading particle effect, i.e. they carry a significant fraction of the incoming proton momentum. For such reasons they have been used as a case study and a first attempt to determine Lambda fracture functions has been recently presented in Ref. [8] by performing a simultaneous QCD fit to a variety of semi-inclusive Lambda production data collected in lepton– nucleon scattering. By using this model, we present predictions for Lambda observables in the target fragmentation region of neutral-current (NC) deep inelastic scattering (DIS) focusing on CLAS@12 GeV kinematics
In order to reduce the dependences on higher order corrections, all predictions presented in the following are normalised, if not otherwise stated, to the inclusive NC DIS cross section, σ DIS, which is obtained integrating Eq (3) over the phase space region defined by constraints in Eq (4)
Summary
The deep inelastic scattering cross section of a lepton l off a proton p, 69 Page 2 of 10. The leading order NC DIS cross section for the scattering of an electron of energy Ee on a proton target reads d2σ ep→eX dxBdQ2. In order to provide a minimal quark-flavour separation, we consider both electron scattering on proton and deuteron targets. Cross sections on the latter are obtained by averaging cross sections on proton and neutron targets. In order to reduce the dependences on higher order corrections, all predictions presented in the following are normalised, if not otherwise stated, to the inclusive NC DIS cross section, σ DIS, which is obtained integrating Eq (3) over the phase space region defined by constraints in Eq (4)
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