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Production of X(3872) at high multiplicity

机译:生产X(3872)高

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The dependence of the production of the X ( 3872 ) meson on the hadron multiplicity in p p 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 ( 2 S ) using parameters compatible with X being a loosely bound charm-meson molecule.
机译:在P P P碰撞中产生X(3872)MESON的生产的依赖性已被用作X的X是曲线 - 蒙塞分子的证据。 该参数部分地基于不正确的假设,即通过与共同散射散射的横截面的横截面可以通过与X的填写能量成反比地成反比的几何截面。 突破横截面应由横截面的概率加权之和近似,用于散射来自X的曲线 - MESON成分的分散,这对结合能量不敏感。 通过使用与X的X和△(2S)的多重依赖性的LHCB协作,可以使用与X是松散的曲线 - 蒙塞分子的参数,对来自LHCB协作的数据的简单修改提供了来自LHCB合作的良好赋予。

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