https://doi.org/10.1051/epjconf/201715803010
Angular correlations in 
pair production at the LHC in the parton Reggeization approach
Samara National Research University, 34, Moskovskoe Shosse, Samara, 443086, Russia
* e-mail: karpishkov@ssau.ru
** e-mail: nefedovma@gmail.com
*** e-mail: saleev@samsu.ru
Published online: 24 October 2017
We calculate angular correlation spectra between beauty (B) and anti-beauty 
mesons in proton-proton collisions in the leading order approximation of the parton Reggeization approach consistently merged with the next-to-leading order corrections from the emission of additional hard gluon (NLO* approximation). To describe b-quark hadronization we use the universal scale-depended parton-to-meson fragmentation functions extracted from the combined e+e- annihilation data. The Kimber-Martin-Ryskin model for the unintegrated parton distribution functions in a proton is implied. We have obtained good agreement between our predictions and data from the CMS Collaboration at the energy 
TeV for 
angular correlations within uncertainties and without free parameters.
© The authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
