Dependence on the Identification of the Scale Energy Parameter Q2 in the Quark Distribution Functions for a DIS Production of Za
Journal Title: Journal of Nuclear Physics, Material Sciences, Radiation and Applications - Year 2018, Vol 6, Issue 1
Abstract
We discuss the Z-production in a DIS (Deep Inelastic Scattering) process e + p → e + Z + X using the Parton Model, within the context of the Standard Model. In contrast with deep inelastic eP-scattering (e + p → e + X), where the choice of Q2, as the transferred momentum squared, is unambiguous; whereas in the case of boson production, the transferred momentum squared, at quark level, depends on the reaction mechanism (where is the EW interaction taking place). We suggest a proposal based on kinematics of the process considered and the usual criterion for Q2, which leads to a simple and practical prescription to calculate Z-production via ep-DIS. We also introduce different options in order to perform the convolution of the parton distribution functions (PDFs) and the scattering amplitude of the quark processes. Our aim in this work is to analyze and show how large could be the dependence of the total cross-section rates on different possible prescriptions used for the identification of the scale energy parameter Q2 . We present results for the total cross section as a function of the total energy √s of the system ep, in the range 300 <√s ≤ 1300 GeV.
Authors and Affiliations
M. Gómez-Bock, W. Gonzalez, L. López Lozano, S. Rosado-Navarro, A. Rosado
Keywords
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- EP ID EP569073
- DOI 10.15415/jnp.2018.61005
- Views 233
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