论文标题
$λ_c^{\ pm} $在PP碰撞中与新的片段化功能生产
$Λ_c^{\pm}$ production in pp collisions with a new fragmentation function
论文作者
论文摘要
我们研究了$λ_C^{\ pm} $ - $ pp $ collisions中的Baryon生产中的通用质量变化数字方案，并与LHCB，Alice和CMS合作的数据进行比较。我们执行$ c \ toλ_c^+$碎片功能的新拟合，结合了$ e^+e^ - $ $ $ $ $数据。与使用较旧的片段化函数的计算相比，与LHC数据的一致性稍差，并且从LHC实验协作中的$λ_C^{\ pm} $生产横截面之间的不同确定之间的张力无法解决。 $λ_c^+$ - 巴里昂和$ d^0 $ -Meson生产的数据比率似乎违反了$ C $ -CHARM QUARK到$ C $ -C $ -HADRON片段的普遍性。
We study inclusive $Λ_c^{\pm}$-baryon production in $pp$ collisions in the general-mass variable-flavor number scheme and compare with data from the LHCb, ALICE and CMS collaborations. We perform a new fit of the $c \to Λ_c^+$ fragmentation function combining $e^+e^-$ data from OPAL and Belle. The agreement with LHC data is slightly worse compared with a calculation using an older fragmentation function, and the tension between different determinations of $Λ_c^{\pm}$ production cross sections from the LHC experimental collaborations is not resolved. The ratio of data for $Λ_c^+$-baryon and $D^0$-meson production seems to violate the universality of $c$-charm quark to $c$-hadron fragmentation.
