Deep inelastic scattering in the dipole picture at next-to-leading order
Julkaistu sarjassa
JYU dissertationsTekijät
Päivämäärä
2021Tekijänoikeudet
© The Author & University of Jyväskylä
This thesis studies gluon saturation in hadronic matter at high energy by calculating
next-to-leading order (NLO) corrections to inclusive and diffractive deep
inelastic scattering cross sections in the Color Glass Condensate (CGC) effective
field theory.
We demonstrate that the large soft gluon logarithm is correctly factorized
into the Balitsky–Kovchegov (BK) renormalization group equation by accurately
connecting the NLO scattering kinematics to the rapidity scale of the dipole amplitude
in the scattering. This brings the perturbative expansion under control
and enables us to do precision comparisons between theory and data. We fit the
initial condition of the BK evolution equation to HERA inclusive deep inelastic
scattering data by combining of the NLO accuracy inclusive cross sections with
beyond leading order BK evolution prescriptions. This results in the state-of-the-
art accuracy comparison between CGC theory and HERA data, and determination
of the dipole amplitude initial shape which is a necessary input for all
NLO CGC phenomenology. In the introductory part of this thesis, the effect of
the NLO BK equation on the fits is assessed, and an alternative form for the
NLO loop correction to the inclusive cross sections is derived which enables the
consistent setting of the dipole amplitude rapidity scale in the NLO corrections.
The underlying mechanism of diffraction in particle scattering is still unknown,
with multiple competing pictures. Diffraction is studied in this thesis
in the CGC formalism, and we calculate the tree-level qqg NLO contribution to
the diffractive deep inelastic scattering structure functions where the qqg Fock
state scatters off the target and becomes the diffractively produced system. This
contribution has previously been known in the literature only in leading log(Q2)
accuracy valid at large Q2, and only for the structure function FD
T . The qqg contribution to both structure functions FD
T and FD L are presented in full NLO accuracy.
...
Julkaisija
Jyväskylän yliopistoISBN
978-951-39-8893-7ISSN Hae Julkaisufoorumista
2489-9003Julkaisuun sisältyy osajulkaisuja
- Artikkeli I: Ducloue, B., Hänninen, H., Lappi, T., & Zhu, Y. (2017). Deep inelastic scattering in the dipole picture at next-to-leading order. Physical Review D, 96(9), Article 094017. DOI: 10.1103/physrevd.96.094017
- Artikkeli II: Hänninen, H., Lappi, T., & Paatelainen, R. (2018). One-loop corrections to light cone wave functions : The dipole picture DIS cross section. Annals of Physics, 393, 358-412. DOI: 10.1016/j.aop.2018.04.015
- Artikkeli III: Beuf, G., Hänninen, H., Lappi, T., & Mäntysaari, H. (2020). Color glass condensate at next-to-leading order meets HERA data. Physical Review D, 102(7), Article 074028. DOI: 10.1103/PhysRevD.102.074028
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- JYU Dissertations [806]
- Väitöskirjat [3530]
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Factorization of the soft gluon divergence from the dipole picture deep inelastic scattering cross sections at next-to-leading order
Ducloué, Bertrand; Hänninen, Henri; Lappi, Tuomas; Zhu, Yan (Sissa, 2018)We use a factorization scheme analogous to one proposed for single inclusive forward hadron production to factorize the soft gluon divergence present in the deep inelastic scattering cross sections in the dipole picture ... -
Factorization of the soft gluon divergence from the dipole picture deep inelastic scattering cross sections at next-to-leading order
Ducloue, B.; Hänninen, H.; Lappi, T.; Zhu, Y. (Sissa, 2019)We use a factorization scheme, analogous to the one proposed for single inclusive forward hadron production in hadronic collisions, to regularize the soft gluon divergence present in the deep inelastic scattering (DIS) ... -
Deep inelastic scattering in the dipole picture at next-to-leading order
Ducloue, Bertrand; Hänninen, Henri; Lappi, Tuomas; Zhu, Yan (American Physical Society, 2017)We study quantitatively the importance of the recently derived next-to-leading-order corrections to the deep inelastic scattering structure functions at small x in the dipole formalism. We show that these corrections can ... -
Diffractive deep inelastic scattering at NLO in the dipole picture
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Complete calculation of exclusive heavy vector meson production at next-to-leading order in the dipole picture
Mäntysaari, Heikki; Penttala, Jani (Springer, 2022)Exclusive production of transversely polarized heavy vector mesons in deep inelastic scattering at high energy is calculated at next-to-leading order accuracy in the Color Glass Condensate framework. In addition to the ...
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