Mass spectra for the cc(b)over-bar(b)over-bar and bb(c)over-bar(c)over-bar tetraquark states

被引：12

作者：

Wang, Qi-Nan ^{[1
]}

Yang, Zi-Yan ^{[1
]}

Chen, Wei ^{[1
]}

Chen, Hua-Xing ^{[2
]}

机构：

[1] Sun Yat Sen Univ, Sch Phys, Guangzhou 510275, Peoples R China

[2] Southeast Univ, Sch Phys, Nanjing 210094, Peoples R China

来源：

PHYSICAL REVIEW D | 2021年 / 104卷 / 01期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

MULTIQUARK HADRONS; QCD; SPECTROSCOPY; PENTAQUARK; DECAYS; MODEL;

D O I：

10.1103/PhysRevD.104.014020

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We have studied the masse spectra for the cc (b) over bar(b) over bar and bb (c) over bar(c) over bar tetraquark states with quantum numbers J(P) = 0(+/-), 1(+/-), and 2(+). We systematically construct the interpolating currents with various spin-parity quantum numbers and calculate their two-point correlation functions in the framework of QCD moment sum rule method. Our calculations show that the masses are about 12.3-12.4 GeV for the positive parity cc (b) over bar(b) over bar tetraquark ground states with J(P) = 0(+), 1(+), 2(+), while 12.8-13.1 GeV for the negative parity channels with J(P) = 0(-), 1(-). The mass predictions for the positive parity cc (b) over bar(b) over bar ground states are lower than the BcBc threshold, implying that these tetraquarks can only decay via weak interaction and thus are expected to be stable and narrow.

引用

页数：8

共 77 条

[1] Observation of structure in the J/ψ-pair mass spectrum [J].

Aaij, R. ;

Beteta, C. Abellan ;

Adeva, B. ;

Adinolfi, M. ;

Aidala, C. A. ;

Ajaltouni, Z. ;

Akar, S. ;

Albicocco, P. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Albero, A. Alfonso ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Andreassi, G. ;

Andreotti, M. ;

Andrews, J. E. ;

Archilli, F. ;

d'Argent, P. ;

Romeu, J. Arnau ;

Artamonov, A. ;

Artuso, M. ;

Arzymatov, K. ;

Aslanides, E. ;

Atzeni, M. ;

Audurier, B. ;

Bachmann, S. ;

Back, J. J. ;

Baker, S. ;

Balagura, V. ;

Baldini, W. ;

Baranov, A. ;

Barlow, R. J. ;

Barrand, G. C. ;

Barsuk, S. ;

Barter, W. ;

Bartolini, M. ;

Baryshnikov, F. ;

Batozskaya, V. ;

Batsukh, B. ;

Battig, A. ;

Battista, V. ;

Bay, A. ;

Beddow, J. .

SCIENCE BULLETIN, 2020, 65 (23) :1983-1993

[2] Search for beautiful tetraquarks in the γ(1S)μ+μ- invariant-mass spectrum [J].

Aaij, R. ;

Adeva, B. ;

Adinolfi, M. ;

Aidala, C. A. ;

Ajaltouni, Z. ;

Akar, S. ;

Albicocco, P. ;

Albrecht, J. ;

Alessio, F. ;

Alexander, M. ;

Alfonso Albero, A. ;

Ali, S. ;

Alkhazov, G. ;

Cartelle, P. Alvarez ;

Alves, A. A., Jr. ;

Amato, S. ;

Amerio, S. ;

Amhis, Y. ;

An, L. ;

Anderlini, L. ;

Andreassi, G. ;

Andreotti, M. ;

Andrews, J. E. ;

Appleby, R. B. ;

Archilli, F. ;

d'Argent, P. ;

Romeu, J. Arnau ;

Artamonov, A. ;

Artuso, M. ;

Arzymatov, K. ;

Aslanides, E. ;

Atzeni, M. ;

Audurier, B. ;

Bachmann, S. ;

Back, J. J. ;

Baker, S. ;

Balagura, V. ;

Baldini, W. ;

Baranov, A. ;

Barlow, R. J. ;

Barsuk, S. ;

Barter, W. ;

Baryshnikov, F. ;

Batozskaya, V. ;

Batsukh, B. ;

Battista, V. ;

Bay, A. ;

Beddow, J. ;

Bedeschi, F. ;

Bediaga, I. .

JOURNAL OF HIGH ENERGY PHYSICS, 2018, (10)

[3]

Abe F, 1998, PHYS REV D, V58, DOI 10.1103/PhysRevD.58.112004

[4] Doubly-hidden scalar heavy molecules and tetraquarks states from QCD at NLO [J].

Albuquerque, R. M. ;

Narison, S. ;

Rabemananjara, A. ;

Rabetiarivony, D. ;

Randriamanatrika, G. .

PHYSICAL REVIEW D, 2020, 102 (09)

[5] Exotics: Heavy pentaquarks and tetraquarks [J].

Ali, Ahmed ;

Lange, Jens Soeren ;

Stone, Sheldon .

PROGRESS IN PARTICLE AND NUCLEAR PHYSICS, 2017, 97 :123-198

[6] Fully heavy pentaquarks [J].

An, Hong-Tao ;

Chen, Kan ;

Liu, Zhan-Wei ;

Liu, Xiang .

PHYSICAL REVIEW D, 2021, 103 (07)

[7] Spectroscopy and decays of the fully-heavy tetraquarks [J].

Anwar, Muhammad Naeem ;

Ferretti, Jacopo ;

Guo, Feng-Kun ;

Santopinto, Elena ;

Zou, Bing-Song .

EUROPEAN PHYSICAL JOURNAL C, 2018, 78 (08)

[8] Beauty-full tetraquarks [J].

Bai, Yang ;

Lu, Sida ;

Osborne, James .

PHYSICS LETTERS B, 2019, 798

[9] The XYZ states: Experimental and theoretical status and perspectives [J].

Brambilla, Nora ;

Eidelman, Simon ;

Hanhart, Christoph ;

Nefediev, Alexey ;

Shen, Cheng-Ping ;

Thomas, Christopher E. ;

Vairo, Antonio ;

Yuan, Chang-Zheng .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2020, 873 :1-154

[10] The possible tetraquark states cc (c)over-bar(c)over-bar observed by the LHCb experiment [J].

Chao, Kuang-Ta ;

Zhu, Shi-Lin .

SCIENCE BULLETIN, 2020, 65 (23) :1952-1953

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