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Single transverse spin asymmetries in semi-inclusive deep inelastic scattering in a spin-1 diquark model

  • Regular Article - Theoretical Physics
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Abstract.

The observed results for the azimuthal single spin asymmetries (SSAs) of the proton, measured in the semi-inclusive deep inelastic scattering (SIDIS), can be explained by the final-state interaction (FSI) from the gluon exchange between the outgoing quark and the target spectator system. SSAs require a phase difference between two amplitudes coupling the target with opposite spins to the same final state. We have used the model of light front wave functions (LFWFs) consisting of a spin- \( \frac{1}{2}\) system as a composite of a spin- \( \frac{1}{2}\) fermion and a spin-1 vector boson to estimate the SSAs. The implications of such a model have been investigated in detail by considering different coupling constants. The FSIs also produce a complex phase which can be included in the LFWFs to calculate the Sivers and Boer-Mulders distribution functions of the nucleon.

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Authors and Affiliations

  1. Department of Physics, Dr. B. R. Ambedkar National Institute of Technology, 144011, Jalandhar, India

    Narinder Kumar & Harleen Dahiya

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  1. Narinder Kumar
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  2. Harleen Dahiya
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Correspondence to Harleen Dahiya.

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Communicated by Xin-Nian Wang

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Kumar, N., Dahiya, H. Single transverse spin asymmetries in semi-inclusive deep inelastic scattering in a spin-1 diquark model. Eur. Phys. J. A 51, 51 (2015). https://doi.org/10.1140/epja/i2015-15051-x

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