X (3872) and Tcc: Structures and productions in heavy ion collisions

被引：14

作者：

Yun, Hyeongock ^{[1
]}

Park, Daeho ^{[1
]}

Noh, Sungsik ^{[1
]}

Park, Aaron ^{[1
]}

Park, Woosung ^{[1
]}

Cho, Sungtae ^{[2
]}

Hong, I. I. Juhee ^{[1
]}

Kim, Yongsun ^{[3
]}

Lim, Sanghoon ^{[4
]}

Lee, Su Houng ^{[1
]}

机构：

[1] Yonsei Univ, Dept Phys, Inst Phys & Appl Phys, Seoul 03722, South Korea

[2] Kangwon Natl Univ, Div Sci Educ, Chunchon 24341, South Korea

[3] Sejong Univ, Dept Phys, Seoul 05006, South Korea

[4] Pusan Natl Univ, Dept Phys, Pusan 46241, South Korea

来源：

PHYSICAL REVIEW C | 2023年 / 107卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

DEUTERON;

D O I：

10.1103/PhysRevC.107.014906

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We argue why the recently observed Tcc could either be a compact multiquark configuration or a loosely bound molecular configuration composed of charmed mesons, whereas the X (3872) is most likely a molecular configuration. The argument is based on different short range interactions for these tetraquark states coming from the color-color and color-spin interaction in a quark model, and the presence of a common strong D-wave mixing at larger distance similar to the deuteron case, which for the molecular configurations leads to large sizes. Such an analogy at large distance allows us to calculate the transverse momentum dependence of the loosely bound molecular configuration of tetraquarks produced in heavy ion collisions using the coalescence model that successfully reproduces the deuteron data using the proton spectra. The ratio of the integrated X (3872) yield obtained from our method to the psi (2S) yield obtained from the statistical hadronization model method is calculated to be 0.806 +/- 0.234, which is a factor of 2.47 larger than that obtained by using statistical model predictions for both particles and in line with the data from the CMS experiment. As the previously calculated transverse momentum distribution of the Tcc assuming the structure to be a compact multiquark configuration is markedly different, experimental measurements of the transverse distribution of the tetraquark states will discriminate between their two possible structures.

引用

页数：8

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