论文标题
在高度多重的情况下生产$ x（3872）$
Production of $X(3872)$ at High Multiplicity
论文作者
论文摘要
$ x（3872）$梅森在$ pp $ collisions中生产的依赖性已被用作$ x $的证据。该参数的一部分是基于错误的假设，即通过与comovers散射$ x $的横截面可以通过与$ x $的绑定能量成反比的几何横截面可以近似。取而代之的是，应通过从$ x $的魅力 - 梅森成分中散射com绕乳头的横截面的概率加权总和，这对结合能不敏感。对Comover交互模型的简单修改为LHCB协作中的数据提供了极好的拟合，该数据使用与$ x $兼容的参数是$ x $和$ψ（2S）$的多样性依赖性，是一种松散绑定的符号符号符号。
The dependence of the production of the $X(3872)$ meson on the hadron multiplicity in $pp$ collisions has been used as evidence against $X$ being a charm-meson molecule. The argument is based in part on the incorrect assumption that the cross section for the breakup of $X$ by scattering with comovers can be approximated by a geometric cross section inversely proportional to the binding energy of $X$. The breakup cross section should instead be approximated by the probability-weighted sum of the cross sections for the scattering of comoving pions from the charm-meson constituents of $X$, which is insensitive to the binding energy. A simple modification of the comover interaction model gives excellent fits to the data from the LHCb collaboration on the multiplicity dependence of the production of $X$ and $ψ(2S)$ using parameters compatible with $X$ being a loosely bound charm-meson molecule.
