THE X(3872) AS A MASS DISTRIBUTION

被引：1
|
作者：
Ruiz Arriola, E. [1 ,2 ]
Garcia Ortega, P. [3 ,4 ]
机构：
[1] Univ Granada, Dept Fis Atom Mol & Nucl, Ave Fuente Nueva S-N, Granada 18071, Spain
[2] Univ Granada, Inst Carlos Fis Teor & Computac 1, Ave Fuente Nueva S-N, Granada 18071, Spain
[3] Univ Salamanca, Dept Fis Fundamental, Salamanca 37008, Spain
[4] Univ Salamanca, Inst Univ Fis Fundamental & Matemat IUFFyM, Salamanca 37008, Spain
来源：
ACTA PHYSICA POLONICA B PROCEEDINGS SUPPLEMENT | 2021年 / 14卷 / 01期
关键词：
D O I：
10.5506/APhysPolBSupp.14.61
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
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 Delta m >= 2 MeV and much larger than its alleged binding energy, Bx = 0.00(18) MeV. On the other hand, there is a neat cancellation in the 1(++) channel for the invariant D (D) over bar* 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.
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页码：61 / 66
页数：6
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