Aghasyan, M. and Avakian, H. and De Sanctis, E. and Gamberg, L. and Mirazita, M. and Musch, B. and Prokudin, A. and Rossi, P. (2015) Studies of transverse momentum dependent parton distributions and Bessel weighting. JOURNAL OF HIGH ENERGY PHYSICS (3): 039. ISSN 1029-8479,
Full text not available from this repository. (Request a copy)Abstract
In this paper we present a new technique for analysis of transverse momentum dependent partondistribution functions, based on the Bessel weighting formalism. The procedure is applied to studies of the double longitudinal spin asymmetry in semi-inclusive deep inelastic scattering using a new dedicated Monte Carlo generator which includes quark intrinsic transverse momentum within the generalized parton model. Using a fully differential cross section for the process, the effect of four momentum conservation is analyzed using various input models for transverse momentum distributions and fragmentation functions. We observe a few percent systematic offset of the Bessel-weighted asymmetry obtained from Monte Carlo extraction compared to input model calculations, which is due to the limitations imposed by the energy and momentum conservation at the given energy/Q(2). We find that the Bessel weighting technique provides a powerful and reliable tool to study the Fourier transform of TMDs with controlled systematics due to experimental acceptances and resolutions with different TMD model inputs.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | AZIMUTHAL DEPENDENCE; FRAGMENTATION; ASYMMETRIES; SCATTERING; COLLINS; MODEL; NUCLEON; BOSON; Deep Inelastic Scattering; Parton Model; QCD |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 24 Jul 2019 07:11 |
| Last Modified: | 24 Jul 2019 07:11 |
| URI: | https://pred.uni-regensburg.de/id/eprint/5798 |
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