X(3872), X(4014), and their bottom partners at finite temperature

被引：11

作者：

Montana, Gloria ^{[1
,2
]}

Ramos, Angels ^{[1
,2
]}

Tolos, Laura ^{[3
,4
,5
,6
]}

Torres-Rincon, Juan M. ^{[1
,2
]}

机构：

[1] Univ Barcelona, Dept Fis Quant & Astrofis, Fac Fis, Marti i Franques 1, Barcelona 08028, Spain

[2] Univ Barcelona, Inst Ciencies Cosmos ICCUB, Fac Fis, Marti i Franques 1, Barcelona 08028, Spain

[3] Theory Ctr, Thomas Jefferson Natl Accelerator Facil, 12000 Jefferson Ave, Newport News, VA 23606 USA

[4] Inst Space Sci ICE, CSIC, Campus UAB, Barcelona 08193, Spain

[5] Inst Estudis Espacials Catalunya IEEC, Barcelona 08034, Spain

[6] Frankfurt Inst Adv Studies, Ruth Moufang Str 1, D-60438 Frankfurt, Germany

来源：

PHYSICAL REVIEW D | 2023年 / 107卷 / 05期

基金：

欧盟地平线“2020”;

关键词：

STATES; COLLISIONS; SEARCH;

D O I：

10.1103/PhysRevD.107.054014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The properties of the X(3872) and its spin partner, the X(4014), are studied both in vacuum and at finite temperature. Using an effective hadron theory based on the hidden-gauge Lagrangian, the X(3872) is dynamically generated from the s-wave rescattering of a pair of pseudoscalar and vector charm mesons. By incorporating the thermal spectral functions of open charm mesons, the calculation is extended to finite temperature. Similarly, the properties of the X(4014) are obtained out of the scattering of charm vector mesons. By applying heavy-quark flavor symmetry, the properties of their bottom counterparts in the axial -vector and tensor channels are also predicted. All the dynamically generated states show a decreasing mass and acquire an increasing decay width with temperature, following the trend observed in their meson constituents. These results are relevant in relativistic heavy-ion collisions at high energies, in analyses of the collective medium formed after hadronization, or in femtoscopic studies, and can be tested in lattice-QCD calculations exploring the melting of heavy mesons at finite temperature.

引用

页数：15

共 93 条

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