MURAL - Maynooth University Research Archive Library



    Phenomenology of diffractive DIS in the framework of fracture functions and determination of diffractive parton distribution functions


    Khanpour, Hamzeh (2019) Phenomenology of diffractive DIS in the framework of fracture functions and determination of diffractive parton distribution functions. Physical Review D, 99 (054007). ISSN 2470-0029

    [img]
    Preview
    Download (1MB) | Preview


    Share your research

    Twitter Facebook LinkedIn GooglePlus Email more...



    Add this article to your Mendeley library


    Abstract

    The goal of this study is to determine a set of diffractive parton distribution functions (diffractive PDFs) from a QCD analysis of all available and up-to-date diffractive deep inelastic scattering (diffractive DIS) datasets from HERA e p collider, including the most recent H1 and ZUES combined inclusive diffractive cross-section measurements. This extraction of diffractive PDFs, referred to as HK19-DPDF, is performed at next-to-leading (NLO) and next-to-next-to-leading (NNLO) in perturbative quantum chromodynamics (QCD). This new determination of diffractive PDFs is based on the fracture functions methodology, a QCD framework designed to provide a statistically sound representation of diffractive DIS processes. Heavy quark contributions to the diffractive DIS are considered within the framework of the FONLL general mass variable flavor number scheme (GM-VFNS) and the “Hessian approach” is used to determine the uncertainties of diffractive PDFs. We discuss the novel aspects of the approach used in the present analysis, namely an optimized and flexible parametrization of the diffractive PDFs as well as a strategy based on the fully factorization theorem for diffractive hard processes. We then present the diffractive PDFs, and discuss the fit quality and the stability upon variations of the kinematic cuts and the fitted datasets. We find that the systematic inclusion of higher-order QCD corrections could improves the description of the data. We compare the extracted sets of diffractive PDFs based on the fracture functions approach to other recent sets of diffractive PDFs, finding in general very good agreements.

    Item Type: Article
    Additional Information: Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license https://creativecommons.org/licenses/by/4.0/. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3. Cite as: Khanpour, Hamzeh. (2019). Phenomenology of diffractive DIS in the framework of fracture functions and determination of diffractive parton distribution functions. Phys. Rev. D 99, 054007. 10.1103/PhysRevD.99.054007
    Keywords: Strong interaction; Phenomenology; diffractive DIS; fracture functions; diffractive parton distribution functions;
    Academic Unit: Faculty of Science and Engineering > Theoretical Physics
    Item ID: 14782
    Identification Number: https://doi.org/10.1103/PhysRevD.99.054007
    Depositing User: Hamzeh Khanpour
    Date Deposited: 10 Sep 2021 16:07
    Journal or Publication Title: Physical Review D
    Publisher: American Physical Society
    Refereed: Yes
    Funders: School of Particles and Accelerators, Institute for Research in Fundamental Sciences (IPM), University of Science and Technology of Mazandaran
    URI:
    Use Licence: This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

    Repository Staff Only(login required)

    View Item Item control page

    Downloads

    Downloads per month over past year

    Origin of downloads