Salajegheh, Maral and Nejad, S. Mohammad Moosavi and Khanpour, Hamzeh and Kniehl, Bernd A. and Soleymaninia, Maryam (2019) B-hadron fragmentation functions at next-to-next-to-leading order from a global analysis of e + e − annihilation data. Physical Review D, 99 (114001). ISSN 2470-0029

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Abstract

We present nonperturbative fragmentation functions (FFs) for bottom-flavored (B) hadrons both at next-to-leading (NLO) and, for the first time, at next-to-next-to-leading order in the ¯¯¯¯¯¯MS factorization scheme with five massless quark flavors. They are determined by fitting all available experimental data of inclusive single B-hadron production in e+e− annihilation, from the ALEPH, DELPHI, and OPAL collaborations at CERN LEP1 and the SLD collaboration at SLAC SLC. The uncertainties in these FFs as well as in the corresponding observables are estimated using the Hessian approach. We perform comparisons with available NLO sets of B-hadron FFs. We apply our new FFs to generate theoretical predictions for the energy distribution of B hadrons produced through the decay of unpolarized or polarized top quarks, to be measured at the CERN LHC.

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: Salajegheh, Maral & Moosavi Nejad, Seyed Mohammad & Khanpour, Hamzeh & Kniehl, Bernd & Soleymaninia, M.. (2019). B -hadron fragmentation functions at next-to-next-to-leading order from a global analysis of e + e − annihilation data. Physical Review D. 99. 10.1103/PhysRevD.99.114001.
Keywords:	Strong interaction; Quantum chromodynamics; Perturbative QCD; B-hadron fragmentation functions; next-to-next-to-leading order; e + e − annihilation data;
Academic Unit:	Faculty of Science and Engineering > Theoretical Physics
Item ID:	14783
Identification Number:	https://doi.org/10.1103/PhysRevD.99.114001
Depositing User:	Hamzeh Khanpour
Date Deposited:	10 Sep 2021 16:19
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:	Publisher
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

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