$X_0(2900)$ and $X_1(2900)$: Hadronic Molecules or Compact Tetraquarks
Hua-Xing Chen1* , Wei Chen2* , Rui-Rui Dong3 , and Niu Su3
1 School of Physics, Southeast University, Nanjing 210094, China2 School of Physics, Sun Yat-Sen University, Guangzhou 510275, China3 School of Physics, Beihang University, Beijing 100191, China
Abstract ：Very recently the LHCb collaboration reported their observation of the first two fully open-flavor tetraquark states, the $X_0(2900)$ of $J^P = 0^+$ and the $X_1(2900)$ of $J^P = 1^-$. We study their possible interpretations using the method of QCD sum rules, paying special attention to an interesting feature of this experiment that the higher resonance $X_1(2900)$ has a width significantly larger than the lower one $X_0(2900)$. Our results suggest that the $X_0(2900)$ can be interpreted as the s-wave $D^{*-}K^{*+}$ molecule state of $J^P = 0^+$, and the $X_1(2900)$ can be interpreted as the p-wave $\bar c \bar s u d$ compact tetraquark state of $J^P = 1^-$. Mass predictions of their bottom partners are also given.
收稿日期: 2020-09-02
出版日期: 2020-09-25
:
12.38.Lg
(Other nonperturbative calculations)
11.40.-q
(Currents and their properties)
12.39.Mk
(Glueball and nonstandard multi-quark/gluon states)
[1] Aaij R 2020 arXiv:2009.00025 [hep-ex] Aaij R 2020 arXiv:2009.00026 [hep-ex] [2] Zyla P A 2020 Prog. Theor. Exp. Phys. 2020 083C01 [3] Chen H X, Chen W, Liu X and Zhu S L 2016 Phys. Rep. 639 1 [4] Lebed R F, Mitchell R E and Swanson E S 2017 Prog. Part. Nucl. Phys. 93 143 [5] Esposito A, Pilloni A and Polosa A D 2017 Phys. Rep. 668 1 [6] Guo F K, Hanhart C, Meissner U G, Wang Q, Zhao Q and Zou B S 2018 Rev. Mod. Phys. 90 015004 [7] Ali A, Lange J S and Stone S 2017 Prog. Part. Nucl. Phys. 97 123 [8] Olsen S L, Skwarnicki T and Zieminska D 2018 Rev. Mod. Phys. 90 015003 [9] Karliner M, Rosner J L and Skwarnicki T 2018 Annu. Rev. Nucl. Part. Sci. 68 17 [10] Liu Y R, Chen H X, Chen W, Liu X and Zhu S L 2019 Prog. Part. Nucl. Phys. 107 237 [11] Brambilla N, Eidelman S, Hanhart C, Nefediev A, Shen C P, Thomas C E, Vairo A and Yuan C Z 2020 Phys. Rep. 873 1 [12] Abazov V M 2016 Phys. Rev. Lett. 117 022003 [13] Abazov V M 2018 Phys. Rev. D 97 092004 [14] Aaij R 2016 Phys. Rev. Lett. 117 152003 Aaij R 2017 Phys. Rev. Lett. 118 109904 [15] Sirunyan A M 2018 Phys. Rev. Lett. 120 202005 [16] Aaltonen T 2018 Phys. Rev. Lett. 120 202006 [17] Aaboud M 2018 Phys. Rev. Lett. 120 202007 [18] Shifman M A, Vainshtein A I and Zakharov V I 1979 Nucl. Phys. B 147 385 [19] Reinders L J, Rubinstein H and Yazaki S 1985 Phys. Rep. 127 1 [20] Chen W, Chen H X, Liu X, Steele T G and Zhu S L 2017 Phys. Lett. B 773 247 [21] Chen H X, Chen W, Liu X and Zhu S L 2020 arXiv:2006.16027 [hep-ph] [22] Aaij R 2020 arXiv:2006.16957 [hep-ex] [23] Liu X H, Yan M J, Ke H W, Li G and Xie J J 2020 arXiv:2008.07190 [hep-ph] [24] He J and Chen D Y 2020 arXiv:2008.07782 [hep-ph] [25] Yang K C, Hwang W Y P, Henley E M and Kisslinger L S 1993 Phys. Rev. D 47 3001 [26] Narison S 2002 QCD as a Theory of Hadrons: From Partons to Confinement in Cambridge Monographs on Particle Physics, Nuclear Physics, and Cosmology vol 17 p 1 (Cambridge: Cambridge University Press) [27] Gimenez V, Lubicz V, Mescia F, Porretti V and Reyes J 2005 Eur. Phys. J. C 41 535 [28] Jamin M 2002 Phys. Lett. B 538 71 [29] Ioffe B L and Zyablyuk K N 2003 Eur. Phys. J. C 27 229 [30] Ovchinnikov A A and Pivovarov A A 1988 Sov. J. Nucl. Phys. 48 721 [31] Ellis J R, Gardi E, Karliner M and Samuel M A 1996 Phys. Rev. D 54 6986 [32] Chen H X, Liu X, Hosaka A and Zhu S L 2008 Phys. Rev. D 78 034012 [33] Liu M Z, Xie J J and Geng L S 2020 arXiv:2008.07389 [hep-ph] [34] Huang Y, Lu J X, Xie J J and Geng L S 2020 arXiv:2008.07959 [hep-ph] [35] Molina R and Oset E 2020 arXiv:2008.11171 [hep-ph] [36] Karliner M and Rosner J L 2020 arXiv:2008.05993 [hep-ph] [37] Molina R, Branz T and Oset E 2010 Phys. Rev. D 82 014010
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[3]
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[4]
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2020, Vol. 37 
