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CMS Note
Report number CMS-CR-2022-017
Title YSF Measurement of the shape of the b quark fragmentation function using charmed mesons produced inside b jets from tt¯ decays
Author(s) Yates, Brent Robert (Ohio State U.)
Publication 2022
Collaboration CMS Collaboration
Imprint 18 Jan 2022
Number of pages 7
Presented at 14th International Workshop on Top Quark Physics 2021, Online, Online, 13 - 17 Sep 2021
Subject category Detectors and Experimental Techniques
Accelerator/Facility, Experiment CERN LHC ; CMS
Keywords General
Abstract A first measurement of the b quark fragmentation function at the LHC is presented. Charmed meson candidates produced via semi-leptonic tt¯ decays (tbW b-jet ν) are used as a proxy for the parent B meson. Templates are generated at various values of the fragmentation shape parameter rb, and are fit to the data to measure the value of rb. The final fit result is rb=0.855±0.037(stat)±0.031(syst). This is the first measurement of the b quark fragmentation function within a color rich environment, and is consistent with previous results from e+e colliders.

 


 Rekord stworzony 2022-02-15, ostatnia modyfikacja 2022-02-15


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