论文标题
X（3872）作为质量分布
The X(3872) as a mass distribution
论文作者
论文摘要
X（3872）的所有现有实验证据均依赖于考虑其衰减产物的有限的实验光谱质量分辨率，通常为$Δm\ ge 2 $ MEV，并且胜于其所谓的结合能量，$ b_x = 0.00（18）$ MEV。另一方面，在$ 1^{++} $ CHANNEL中有一个整洁的取消，用于不变的$ d {\ bar d}^*$质量，围绕连续体和绑定状态贡献之间的阈值。我们讨论了这种效果对有限温度下的X（3872）的影响，在PP碰撞数据中迅速生产具有有限$ P_T $或涉及三角形奇异性的外来状态的特定生产实验的线形
All existing experimental evidence of the bound state nature of the X(3872) relies on considering its decay products with a finite experimental spectral mass resolution which is typically $Δm \ge 2$ MeV and much larger than its alleged binding energy, $B_X =0.00(18)$MeV. On the other hand, there is a neat cancellation in the $1^{++} $ channel for the invariant $D {\bar D}^*$ mass around the threshold between the continuum and bound state contribution. We discuss the impact of this effect for X(3872) at finite temperature, in prompt production in pp collisions data with a finite $p_T$ or the lineshapes of specific production experiments of exotic states involving triangle singularities
