We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small-x and small-Q2 HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-x, which persists at high scales.

Bonvini, M., & Rottoli, L. (2017). Towards small-x resummed parton distribution functions. In 25th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2017. Sissa Medialab Srl [10.22323/1.297.0207].

Towards small-x resummed parton distribution functions

Rottoli, L
2017

Abstract

We present preliminary results for fits of parton distribution functions (PDFs) which include the resummation of small-x logarithms at NLLx accuracy, performed in the NNPDF framework. We observe an improvement in the description of DIS data at small values of Bjorken x when resummation effects are included. The improvement is more marked when comparing NNLO+NLLx fits to NNLO ones, and is particularly noticeable for small-x and small-Q2 HERA inclusive structure functions. The main effect of the resummation is an enhancement of the gluon and singlet PDFs at small-x, which persists at high scales.
No
slide + paper
Scientifica
PDF; Resummation
English
International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2017 3-7 April
https://pos.sissa.it/297/207
Bonvini, M., & Rottoli, L. (2017). Towards small-x resummed parton distribution functions. In 25th International Workshop on Deep-Inelastic Scattering and Related Subjects, DIS 2017. Sissa Medialab Srl [10.22323/1.297.0207].
Bonvini, M; Rottoli, L
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10281/229886
Citazioni
  • Scopus 0
  • ???jsp.display-item.citation.isi??? ND
Social impact