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Title: Study of e+e-π+π-J/ψ and Observation of a Charged Charmoniumlike State at Belle

Abstract

The cross section for $e^+e^-→π^+π^-J/ψ$ between 3.8 GeV and 5.5 GeV is measured with a 967 fb-1 data sample collected by the Belle detector at or near the $$\Upsilon(nS)$$ ($n=1, 2, ..., 5$) resonances. The $$\Upsilon$$(4260) state is observed, and its resonance parameters are determined. In addition, an excess of $π^+π^-J/ψ$ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parameterization with properties that are consistent with the $$\Upsilon$$(4008) state that was previously reported by Belle. In a study of $$\Upsilon$$(4260)→$π^+π^-J/ψ$ decays, a structure is observed in the $$M(\pi^{\pm}J/ψ)$$ mass spectrum with 5.2$$σ$$ significance, with mass M=(3894.5±6.6±4.5)MeV/$c^2$ and width $$Γ$$=(63±24±26) MeV/$c^2$, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmonium-like state.

Authors:
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Publication Date:
Research Org.:
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Org.:
Belle Collaboration
OSTI Identifier:
1594512
Alternate Identifier(s):
OSTI ID: 1103822
Grant/Contract Number:  
SC0009973
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 110; Journal Issue: 25; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Liu, Z. Q., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Bala, A., Belous, K., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Gaur, V., Gabyshev, N., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Joffe, D., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kwon, Y. -J., Lange, J. S., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakano, E., Nakao, M., Nakazawa, H., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Ostrowicz, W., Oswald, C., Pakhlov, P., Pakhlova, G., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seidl, R., Semmler, D., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Starič, M., Steder, M., Sumihama, M., Sumiyoshi, T., Tamponi, U., Tanida, K., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Won, E., Yabsley, B. D., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., and Zupanc, A. Study of e+e-→π+π-J/ψ and Observation of a Charged Charmoniumlike State at Belle. United States: N. p., 2013. Web. doi:10.1103/PhysRevLett.110.252002.
Liu, Z. Q., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Bala, A., Belous, K., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Gaur, V., Gabyshev, N., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Joffe, D., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kwon, Y. -J., Lange, J. S., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakano, E., Nakao, M., Nakazawa, H., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Ostrowicz, W., Oswald, C., Pakhlov, P., Pakhlova, G., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seidl, R., Semmler, D., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Starič, M., Steder, M., Sumihama, M., Sumiyoshi, T., Tamponi, U., Tanida, K., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Won, E., Yabsley, B. D., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., & Zupanc, A. Study of e+e-→π+π-J/ψ and Observation of a Charged Charmoniumlike State at Belle. United States. https://doi.org/10.1103/PhysRevLett.110.252002
Liu, Z. Q., Shen, C. P., Yuan, C. Z., Adachi, I., Aihara, H., Asner, D. M., Aulchenko, V., Aushev, T., Aziz, T., Bakich, A. M., Bala, A., Belous, K., Bhardwaj, V., Bhuyan, B., Bischofberger, M., Bondar, A., Bonvicini, G., Bozek, A., Bračko, M., Brodzicka, J., Browder, T. E., Chang, P., Chekelian, V., Chen, A., Chen, P., Cheon, B. G., Chistov, R., Cho, K., Chobanova, V., Choi, S. -K., Choi, Y., Cinabro, D., Dalseno, J., Danilov, M., Doležal, Z., Drásal, Z., Drutskoy, A., Dutta, D., Dutta, K., Eidelman, S., Epifanov, D., Farhat, H., Fast, J. E., Feindt, M., Ferber, T., Frey, A., Gaur, V., Gabyshev, N., Ganguly, S., Gillard, R., Goh, Y. M., Golob, B., Haba, J., Hayasaka, K., Hayashii, H., Horii, Y., Hoshi, Y., Hou, W. -S., Hsiung, Y. B., Hyun, H. J., Iijima, T., Inami, K., Ishikawa, A., Itoh, R., Iwasaki, Y., Joffe, D., Julius, T., Kah, D. H., Kang, J. H., Kawasaki, T., Kiesling, C., Kim, H. J., Kim, J. B., Kim, J. H., Kim, K. T., Kim, M. J., Kim, Y. J., Kinoshita, K., Klucar, J., Ko, B. R., Kodyš, P., Korpar, S., Križan, P., Krokovny, P., Kuhr, T., Kwon, Y. -J., Lange, J. S., Lee, S. -H., Li, J., Li, Y., Libby, J., Liu, C., Lukin, P., Matvienko, D., Miyabayashi, K., Miyata, H., Mizuk, R., Mohanty, G. B., Moll, A., Mussa, R., Nakano, E., Nakao, M., Nakazawa, H., Natkaniec, Z., Nayak, M., Nedelkovska, E., Nisar, N. K., Nishida, S., Nitoh, O., Ogawa, S., Okuno, S., Olsen, S. L., Onuki, Y., Ostrowicz, W., Oswald, C., Pakhlov, P., Pakhlova, G., Park, H., Park, H. K., Pedlar, T. K., Pestotnik, R., Petrič, M., Piilonen, L. E., Ritter, M., Röhrken, M., Rostomyan, A., Sahoo, H., Saito, T., Sakai, Y., Sandilya, S., Santel, D., Sanuki, T., Sato, Y., Savinov, V., Schneider, O., Schnell, G., Schwanda, C., Seidl, R., Semmler, D., Senyo, K., Seon, O., Sevior, M. E., Shapkin, M., Shibata, T. -A., Shiu, J. -G., Shwartz, B., Sibidanov, A., Simon, F., Smerkol, P., Sohn, Y. -S., Sokolov, A., Solovieva, E., Starič, M., Steder, M., Sumihama, M., Sumiyoshi, T., Tamponi, U., Tanida, K., Tatishvili, G., Teramoto, Y., Trabelsi, K., Tsuboyama, T., Uchida, M., Uehara, S., Uglov, T., Unno, Y., Uno, S., Vahsen, S. E., Van Hulse, C., Vanhoefer, P., Varner, G., Varvell, K. E., Vorobyev, V., Wagner, M. N., Wang, C. H., Wang, M. -Z., Wang, P., Wang, X. L., Watanabe, M., Watanabe, Y., Won, E., Yabsley, B. D., Yamaoka, J., Yamashita, Y., Yashchenko, S., Yook, Y., Yusa, Y., Zhang, C. C., Zhang, Z. P., Zhilich, V., and Zupanc, A. Mon . "Study of e+e-→π+π-J/ψ and Observation of a Charged Charmoniumlike State at Belle". United States. https://doi.org/10.1103/PhysRevLett.110.252002. https://www.osti.gov/servlets/purl/1594512.
@article{osti_1594512,
title = {Study of e+e-→π+π-J/ψ and Observation of a Charged Charmoniumlike State at Belle},
author = {Liu, Z. Q. and Shen, C. P. and Yuan, C. Z. and Adachi, I. and Aihara, H. and Asner, D. M. and Aulchenko, V. and Aushev, T. and Aziz, T. and Bakich, A. M. and Bala, A. and Belous, K. and Bhardwaj, V. and Bhuyan, B. and Bischofberger, M. and Bondar, A. and Bonvicini, G. and Bozek, A. and Bračko, M. and Brodzicka, J. and Browder, T. E. and Chang, P. and Chekelian, V. and Chen, A. and Chen, P. and Cheon, B. G. and Chistov, R. and Cho, K. and Chobanova, V. and Choi, S. -K. and Choi, Y. and Cinabro, D. and Dalseno, J. and Danilov, M. and Doležal, Z. and Drásal, Z. and Drutskoy, A. and Dutta, D. and Dutta, K. and Eidelman, S. and Epifanov, D. and Farhat, H. and Fast, J. E. and Feindt, M. and Ferber, T. and Frey, A. and Gaur, V. and Gabyshev, N. and Ganguly, S. and Gillard, R. and Goh, Y. M. and Golob, B. and Haba, J. and Hayasaka, K. and Hayashii, H. and Horii, Y. and Hoshi, Y. and Hou, W. -S. and Hsiung, Y. B. and Hyun, H. J. and Iijima, T. and Inami, K. and Ishikawa, A. and Itoh, R. and Iwasaki, Y. and Joffe, D. and Julius, T. and Kah, D. H. and Kang, J. H. and Kawasaki, T. and Kiesling, C. and Kim, H. J. and Kim, J. B. and Kim, J. H. and Kim, K. T. and Kim, M. J. and Kim, Y. J. and Kinoshita, K. and Klucar, J. and Ko, B. R. and Kodyš, P. and Korpar, S. and Križan, P. and Krokovny, P. and Kuhr, T. and Kwon, Y. -J. and Lange, J. S. and Lee, S. -H. and Li, J. and Li, Y. and Libby, J. and Liu, C. and Lukin, P. and Matvienko, D. and Miyabayashi, K. and Miyata, H. and Mizuk, R. and Mohanty, G. B. and Moll, A. and Mussa, R. and Nakano, E. and Nakao, M. and Nakazawa, H. and Natkaniec, Z. and Nayak, M. and Nedelkovska, E. and Nisar, N. K. and Nishida, S. and Nitoh, O. and Ogawa, S. and Okuno, S. and Olsen, S. L. and Onuki, Y. and Ostrowicz, W. and Oswald, C. and Pakhlov, P. and Pakhlova, G. and Park, H. and Park, H. K. and Pedlar, T. K. and Pestotnik, R. and Petrič, M. and Piilonen, L. E. and Ritter, M. and Röhrken, M. and Rostomyan, A. and Sahoo, H. and Saito, T. and Sakai, Y. and Sandilya, S. and Santel, D. and Sanuki, T. and Sato, Y. and Savinov, V. and Schneider, O. and Schnell, G. and Schwanda, C. and Seidl, R. and Semmler, D. and Senyo, K. and Seon, O. and Sevior, M. E. and Shapkin, M. and Shibata, T. -A. and Shiu, J. -G. and Shwartz, B. and Sibidanov, A. and Simon, F. and Smerkol, P. and Sohn, Y. -S. and Sokolov, A. and Solovieva, E. and Starič, M. and Steder, M. and Sumihama, M. and Sumiyoshi, T. and Tamponi, U. and Tanida, K. and Tatishvili, G. and Teramoto, Y. and Trabelsi, K. and Tsuboyama, T. and Uchida, M. and Uehara, S. and Uglov, T. and Unno, Y. and Uno, S. and Vahsen, S. E. and Van Hulse, C. and Vanhoefer, P. and Varner, G. and Varvell, K. E. and Vorobyev, V. and Wagner, M. N. and Wang, C. H. and Wang, M. -Z. and Wang, P. and Wang, X. L. and Watanabe, M. and Watanabe, Y. and Won, E. and Yabsley, B. D. and Yamaoka, J. and Yamashita, Y. and Yashchenko, S. and Yook, Y. and Yusa, Y. and Zhang, C. C. and Zhang, Z. P. and Zhilich, V. and Zupanc, A.},
abstractNote = {The cross section for $e^+e^-→π^+π^-J/ψ$ between 3.8 GeV and 5.5 GeV is measured with a 967 fb-1 data sample collected by the Belle detector at or near the $\Upsilon(nS)$ ($n=1, 2, ..., 5$) resonances. The $\Upsilon$(4260) state is observed, and its resonance parameters are determined. In addition, an excess of $π^+π^-J/ψ$ production around 4 GeV is observed. This feature can be described by a Breit-Wigner parameterization with properties that are consistent with the $\Upsilon$(4008) state that was previously reported by Belle. In a study of $\Upsilon$(4260)→$π^+π^-J/ψ$ decays, a structure is observed in the $M(\pi^{\pm}J/ψ)$ mass spectrum with 5.2$σ$ significance, with mass M=(3894.5±6.6±4.5)MeV/$c^2$ and width $Γ$=(63±24±26) MeV/$c^2$, where the errors are statistical and systematic, respectively. This structure can be interpreted as a new charged charmonium-like state.},
doi = {10.1103/PhysRevLett.110.252002},
journal = {Physical Review Letters},
number = 25,
volume = 110,
place = {United States},
year = {Mon Jun 17 00:00:00 EDT 2013},
month = {Mon Jun 17 00:00:00 EDT 2013}
}

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Mass spectra of four-quark states in the hidden charm sector
journal, August 2014


Hadronic molecular states composed of spin-$\frac{3}{2}$32 singly charmed baryons
journal, February 2019


Precision resonance energy scans with the PANDA experiment at FAIR: Sensitivity study for width and line shape measurements of the X(3872)
journal, March 2019


$$Z_c(4200)^+$$ Z c ( 4200 ) + decay width as a charmonium-like tetraquark state
journal, August 2015


Decay widths of the spin-2 partners of the X(3872)
journal, November 2015


The decay width of the $$Z_c(3900)$$Zc(3900) as an axialvector tetraquark state in solid quark–hadron duality
journal, January 2018


The $$Z_c(3900)$$ Z c ( 3900 ) peak does not come from the “triangle singularity”
journal, March 2018


Can the $$\psi (4040)$$ ψ ( 4040 ) explain the peak associated with Y(4008)?
journal, January 2019


Analysis of the hidden-bottom tetraquark mass spectrum with the QCD sum rules
journal, June 2019


Present status on experimental search for pentaquarks
journal, May 2014

  • Liu, Tianbo; Mao, Yajun; Ma, Bo-Qiang
  • International Journal of Modern Physics A, Vol. 29, Issue 13
  • DOI: 10.1142/s0217751x14300208

EXOTIC QUARKONIUM SPECTROSCOPY: X(3872), Z b (10610), AND Z b (10650) IN NON-RELATIVISTIC EFFECTIVE THEORY
journal, January 2014


A New Hadron Spectroscopy
conference, September 2015

  • Olsen, Stephan Lars
  • Proceedings of 53rd International Winter Meeting on Nuclear Physics — PoS(Bormio2015)
  • DOI: 10.22323/1.238.0050

Could Z c (3900) be a I G J P = 1 + 1 + $D^{*}\bar{D}$ molecular state?
journal, April 2014

  • Cui, Chun-Yu; Liao, Xin-Hua; Liu, Yong-Lu
  • Journal of Physics G: Nuclear and Particle Physics, Vol. 41, Issue 7
  • DOI: 10.1088/0954-3899/41/7/075003

Evidence for resonant structures in e + e →π + π h c
journal, April 2014


Observation of e + e π + π ψ ( 3770 ) and D 1 ( 2420 ) 0 D ¯ 0 + c . c .
journal, August 2019


Fully-heavy tetraquarks: b b c ¯ c ¯ and b c b ¯ c ¯
journal, November 2019


Towards the understanding of Z c ( 3900 ) from lattice QCD
journal, March 2020


Search for the isospin violating decay Y ( 4260 ) J / ψ η π 0
journal, July 2015


Dynamically generated J P = 1 / 2 ( 3 / 2 ) singly charmed and bottom heavy baryons
journal, July 2015


Possible hadronic molecules composed of the doubly charmed baryon and nucleon
journal, September 2018


Estimating the mass of the hidden charm $$1^+(1^{+})$$ 1 + ( 1 + ) tetraquark state via QCD sum rules
journal, October 2014


Interference effect as resonance killer of newly observed charmoniumlike states Y(4320) and Y(4390)
journal, February 2018


Precision resonance energy scans with the PANDA experiment at FAIR
text, January 2019

  • Barucca, G.; Davı, F.; Lancioni, G.
  • GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt
  • DOI: 10.15120/gsi-2019-00741

Evidence for Z±c(3900) in semi-inclusive decays of b-flavored hadrons
text, January 2018

  • Abazov, Victor Mukhamedovich; Abbott, Braden Keim; Acharya, Bannanje Sripath
  • RWTH Aachen University
  • DOI: 10.18154/rwth-2018-229989

The BESIII physics programme
journal, July 2019


A new hadron spectroscopy
conference, January 2016

  • Olsen, Stephen Lars
  • XITH CONFERENCE ON QUARK CONFINEMENT AND HADRON SPECTRUM, AIP Conference Proceedings
  • DOI: 10.1063/1.4938657

Exotic hadrons with heavy flavors: X , Y , Z , and related states
journal, June 2016

  • Hosaka, Atsushi; Iijima, Toru; Miyabayashi, Kenkichi
  • Progress of Theoretical and Experimental Physics, Vol. 2016, Issue 6
  • DOI: 10.1093/ptep/ptw045

Exotic pentaquark states with the q q Q Q Q ¯ configuration
journal, September 2019


Search for light tetraquark states in ϒ ( 1 S ) and ϒ ( 2 S ) decays
journal, December 2017


Analysis of the Zc(4200) as axial-vector molecule-like state
journal, October 2015


Study of e + e π + π π 0 η c and evidence for Z c ( 3900 ) ± decaying into ρ ± η c
journal, December 2019


Precise Measurement of the e + e π + π J / ψ Cross Section at Center-of-Mass Energies from 3.77 to 4.60 GeV
conference, June 2020


Evidence for resonant structures in e+e- to pi+pi-h_c
text, January 2013


Mass spectra of four quark states in hidden charm sector
text, January 2014


Could the near-threshold $XYZ$ states be simply kinematic effects?
text, January 2014


Decay widths of the spin-2 partners of the X(3872)
text, January 2015


Employing spin symmetry to disentangle different models for the XYZ states
text, January 2015


New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
text, January 2015


Heavy Quarkonium Hybrids: Spectrum, Decay and Mixing
text, January 2017


Heavy Baryon-Antibaryon Molecules in Effective Field Theory
text, January 2017


QCD Sum Rules Approach to the $X,~Y$ and $Z$ States
text, January 2018


A coupled-channel lattice study on the resonance-like structure $Z_c(3900)$
text, January 2019