Observation of an alternative 
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Chilikin, K.; Adachi, I.; Aihara, H.; Said, S. Al; Asner, D. M.; Aulchenko, V.; Ayad, R.; Babu, V.; Badhrees, I.; Bakich, A. M.; Bansal, V.; Barberio, E.; Besson, D.; Bhardwaj, V.; Bhuyan, B.; Biswal, Jyoti Prakash; Bobrov, A.; Bondar, A.; Bożek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chekelian, V.; Chen, A.; Cheon, B. G.; Cho, K.; Choi, Y.; Cinabro, D.; Dash, N.; Carlo, S. Di; Doležal, Z.; Drásal, Z.; Dutta, D.; Eidelman, S.; Farhat, H.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Gaur, V.; Gabyshev, N.; Garmash, A.; Gillard, R.; Goldenzweig, P.; Haba, J.; Hara, T.; Hayasaka, K.; Hou, W.-S.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, Y.; Jacobs, W. W.; Jaeglé, I.; Jeon, H. B.; Jin, Y.; Joffe, D.; Joo, K. K.; Julius, T.; Kang, K. H.; Karyan, G.; Katrenko, P.; Kim, D. Y.; Kim, H. J.; Kim, J. B.; Kim, K. T.; Kim, M. J.; Kim, S. H.; Kim, Y. J.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Li, L.; Gioi, L. Li; Libby, J.; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matsuda, T.; Matvienko, D.; Miyabayashi, K.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moon, H. K.; Mori, Takashi; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Nath, K. J.; Natkaniec, Z.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Okuno, S.; Olsen, S. L.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pal, B. K.; Pardi, S.; Park, H.; Paul, S.; Pestotnik, R.; Piilonen, L. E.; Pulvermacher, C.; Ritter, M.; Sahoo, H.; Sakai, Y.; Salehi, M.; Sandilya, S.; Šantelj, L.; Sanuki, T.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Senyo, K.; Seon, O.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T. A.; Shiu, J. G.; Sokolov, A.; Solovieva, E.; Starič, M.; Sumiyoshi, T.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Trabelsi, K.; Uchida, M.; Uehara, S.; Uglov, T.; Uno, S.; Usov, Y.; Hulse, C. Van; Varner, G.; Vinokurova, A.; Vossen, A.; Wang, C. H.; Wang, M.-Z.; Wang, P.; Watanabe, M.; Watanabe, Y.; Widmann, E.; Won, E.; Yamamoto, H.; Yamashita, Y.; Ye, H.; Yuan, C. Z.; Yusa, Y.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

doi:10.1103/physrevd.95.112003

Cited by 67 publications

(81 citation statements)

References 53 publications

(42 reference statements)

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“…Thus, two χ c0 (2P) candidates like X(3840) in Ref. [40] and X(3860) reported by the Belle Collaboration [45] should be excluded.…”

Section: Introductionmentioning

confidence: 98%

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
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In this work, we seriously discuss whether X(3915) can be treated as a χ c0 (2P) state. Based on an unquenched quark model, we give the mass spectrum of the χ cJ (2P) states, where there are no free input parameters in our calculation. Our result shows that the mass gap between χ c0 (2P) and χ c2 (2P) can reach 13 MeV, which can reproduce the mass difference between Z(3930) and X(3915). Additionally, the calculated masses of χ c0 (2P) and χ c2 (2P) are consistent with experimental values of X(3915) and Z(3930), respectively. Besides, giving the mass spectrum analysis to support X(3915) as χ c0 (2P), we also calculate the width of χ c0 (2P) with the same framework, which is also consistent with the experimental data of X(3915). Thus, the possibility of charmoniumlike state X(3915) as χ c0 (2P) state is further enforced. ‡ Corresponding author * Electronic address: duanmx16@lzu.edu.cn † Electronic address: luosq15@lzu.edu.cn § Electronic address: xiangliu@lzu.edu.cn ¶ Electronic address: matsuki@tokyo-kasei.ac.jp η c (2S) 1986 h c (1P) 2003 X(3872) 2006 Z(3930) 2010 X(3915) 2013 X(3823) 2017 Y(4220) 2019 X(3842) Established charmonia XYZ states as the candidates of charmonium 17 years FIG. 1: The established charmonia and some XYZ states as possible candidates for charmonium.In 2009, focusing on 2P states, the Lanzhou group carried out the study of the mass spectrum and strong decay behav-arXiv:2002.03311v3 [hep-ph]

show abstract

“…Thus, two χ c0 (2P) candidates like X(3840) in Ref. [40] and X(3860) reported by the Belle Collaboration [45] should be excluded.…”

Section: Introductionmentioning

confidence: 98%

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
View full text Add to dashboard Cite

show abstract

“…Note that χ c0 prefer to be produced with J/ψ and decay into the DD final state. While the significance of the first Belle observation was less than 5σ , the later Belle analysis using increased statistics of the full data set has confirmed the observation of χ c0 (2P) with the significance of more than 6σ [53]. In addition, Belle showed that J PC = 0 ++ is more preferable for this candidate than 2 ++ , although with low significance, 2.5σ .…”

Section: X(3915)mentioning

confidence: 70%

Review of production of hadron resonances in $e^+e^-$ collisions

Pakhlova¹,

Zhukova²

2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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“…Within this picture, the first state seems too narrow, which can complicate its measurement in the experiments of Ref. [8]. What appears to be clear is that none of the J PC = 0 ++ states seems to favor a X(3915) assignment, neither by mass nor by width.…”

Section: Pos(hadron2017)113mentioning

confidence: 97%

“…Recent works favor a J PC = 2 ++ nature for the latter, which as a side effect would imply a large non-qq component for the X(3915) state [6,7]. Furthermore, a new charmonium-like state decaying to DD, called X(3860), has been recently reported by the Belle Collaboration [8], with a mass of 3862…”

Section: Introductionmentioning

confidence: 99%

The nature of the $X(3915)/X(3930)$ resonances from a coupled-channels approach

Ortega¹,

Segovia²

2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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The positive parity χ cJ (2P) charmonium states are expected to lie around the 3.9 GeV/c 2 energy region, according to the predictions of quark models. However, a plethora of states with difficult assignment and unconventional properties have been discovered over the years, i.e., the X(3872), X(3940), Y (3940), X(3915), X(3860) and the X(3930) resonances, which complicates the description of this intriguing region. In this work we analyze the 0 ++ and 2 ++ sectors, employing a coupled-channels formalism successfully applied to the 1 ++ sector, where the X(3872) was described as a DD * + h.c. molecule with a sizable cc (2 3 P 1 ) component. This coupled-channels formalism is based on a widely-used Constituent Quark Model, which describes the quark-quark interactions, and the 3 P 0 quark pair creation mechanism, used to couple the two and four quark sectors. The recent controversy about the quantum numbers of the X(3915) state, the properties of the X(3930) one and the nature of the new X(3860) resonance are analyzed in a unified theoretical framework, being all the parameters completely constrained from previous calculations in the low-lying heavy quarkonium phenomenology.

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Observation of an alternative χc0(2P) candidate in e+e−

Cited by 67 publications

References 53 publications

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
View full text Add to dashboard Cite

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
View full text Add to dashboard Cite

Review of production of hadron resonances in $e^+e^-$ collisions

The nature of the $X(3915)/X(3930)$ resonances from a coupled-channels approach

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Observation of an alternative χc0(2P) candidate in e+e−

Cited by 67 publications

References 53 publications

Possibility of charmoniumlike state X(3915) as χc0(2P)Duan1, Luo2, Liu3 et al. 2020Phys. Rev. D302250View full textAdd to dashboardCite

Possibility of charmoniumlike state X(3915) as χc0(2P)Duan1, Luo2, Liu3 et al. 2020Phys. Rev. D302250View full textAdd to dashboardCite

Review of production of hadron resonances in $e^+e^-$ collisions

The nature of the $X(3915)/X(3930)$ resonances from a coupled-channels approach

Contact Info

Product

Resources

About

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
View full text Add to dashboard Cite

Possibility of charmoniumlike state X(3915) as χc0(2P)
Duan
¹
,
Luo
²
,
Liu
³

et al. 2020
Phys. Rev. D
30
2
25
0
View full text Add to dashboard Cite