Soleymaninia, Maryam and Khanpour, Hamzeh and Nejad, S. Mohammad Moosavi (2018) First determination of D∗-meson fragmentation functions and their uncertainties at next-to-next-to-leading order. Physical Review D, 97 (074014). ISSN 2470-0029

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Abstract

We present, for the first time, a set of next-to-next-to-leading order (NNLO) fragmentation functions (FFs) describing the production of charmed-meson D∗ from partons. Exploiting the universality and scaling violations of FFs, we extract the NLO and NNLO FFs through a global fit to all relevant data sets from single-inclusive e+e− annihilation. The uncertainties for the resulting FFs as well as the corresponding observables are estimated using the Hessian approach. We evaluate the quality of the SKM18 FFs determined in this analysis by comparing with the recent results in literature and show how they describe the available data for single-inclusive D*±-meson production in electron-positron annihilation. As a practical application, we apply the extracted FFs to make our theoretical predictions for the scaled-energy distributions of D*±-mesons inclusively produced in top quark decays. We explore the implications of SKM18 for LHC phenomenology and show that our findings of this study can be introduced as a channel to indirect search for top-quark properties.

Item Type:	Article
Additional Information:	Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. 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: First determination of ${D}^{*}$-meson fragmentation functions and their uncertainties at next-to-next-to-leading order, Soleymaninia, Maryam and Khanpour, Hamzeh and Nejad, S. Mohammad Moosavi, Phys. Rev. D, vol.97, 074014, 2018, American Physical Society, doi 10.1103/PhysRevD.97.074014, https://link.aps.org/doi/10.1103/PhysRevD.97.074014
Keywords:	First determination; D∗-meson fragmentation functions; next-to-next-to-leading order;
Academic Unit:	Faculty of Science and Engineering > Theoretical Physics
Item ID:	14774
Identification Number:	https://doi.org/10.1103/PhysRevD.97.074014
Depositing User:	Hamzeh Khanpour
Date Deposited:	09 Sep 2021 16:24
Journal or Publication Title:	Physical Review D
Publisher:	American Physical Society
Refereed:	Yes
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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