论文标题
ysf测量$ \ mathrm {b} $ quark碎片函数的形状，使用$ \ mathrm {b} $ jets中产生的迷人介子，来自$ \ mathrm {t \ mathrm {
YSF Measurement of the shape of the $\mathrm{b}$ quark fragmentation function using charmed mesons produced inside $\mathrm{b}$ jets from $\mathrm{t\overline{t}}$ decays
论文作者
论文摘要
提出了LHC处的$ \ Mathrm {B} $ Quark碎片功能的第一个测量。通过半级别的$ \ mathrm {t \ overline {t}} $衰减生产的诱人的梅森候选者（$ \ m atrm {t} \ to \ mathrm {b} \ mathrm {b} \ mathrm {w} \ to $ b-jet $ \ ell $ c $ c \ c \ b-模板是在片段形状参数$ r _ {\ mathrm {b}} $的各种值下生成的，并适合数据以测量$ r _ {\ mathrm {b}} $的值。最终的拟合结果是$ r _ {\ mathrm {b}} = 0.855 \ pm 0.037 \; \ mathrm {（stat）} \ pm 0.031 \; \ mathrm {（syst）} $。这是$ \ mathrm {b} $ quark碎片功能在颜色丰富的环境中的第一个测量，并且与$ e^+e^ - $ colliders的先前结果一致。
A first measurement of the $\mathrm{b}$ quark fragmentation function at the LHC is presented. Charmed meson candidates produced via semi-leptonic $\mathrm{t\overline{t}}$ decays ($\mathrm{t} \to \mathrm{b}\mathrm{W} \to$ b-jet $\ell ν$) are used as a proxy for the parent $\mathrm{B}$ meson. Templates are generated at various values of the fragmentation shape parameter $r_{\mathrm{b}}$, and are fit to the data to measure the value of $r_{\mathrm{b}}$. The final fit result is $r_{\mathrm{b}}=0.855 \pm 0.037\;\mathrm{(stat)} \pm 0.031\;\mathrm{(syst)}$. This is the first measurement of the $\mathrm{b}$ quark fragmentation function within a color rich environment, and is consistent with previous results from $e^+e^-$ colliders.
