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 t¯t 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 t¯t decays (t→bW→ b-jet ℓν) 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. |