Experimental constraints on the spin and parity of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Z</mml:mi><mml:mo mathvariant="bold" stretchy="false">(</mml:mo><mml:mn>4430</mml:mn><mml:msup><mml:mo mathvariant="bold" stretchy="false">)</mml:mo><mml:mo mathvariant="bold">+</mml:mo></mml:msup></mml:math>

Mizuk, R.; Abe, Kazuo; Adachi, I.; Aihara, H.; Anipko, D.; Aulchenko, V.; Aushev, T.; Bakich, A. M.; Balagura, V.; Barberio, E.; Bay, A.; Bedny, I.; Belous, K.; Bitenc, U.; Bizjak, I.; Blyth, S.; Bondar, A.; Bożek, A.; Bračko, M.; Brodzicka, J.; Browder, T. E.; Chang, M. C.; Chen, A.; Chen, K. F.; Chen, W. T.; Cheon, B.G.; Chistov, R.; Choi, Y.; Cole, S.; Dalseno, J.; Danilov, M.; Drutskoy, A.; Eidelman, S.; Epifanov, D.; Fratina, S.; Gabyshev, N.; Garmash, A.; Gershon, T.; Gokhroo, G.; Golob, B.; Ha, H.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hazumi, M.; Heffernan, D.; Hokuue, T.; Hoshi, Y.; Hou, S.; Hou, W.-S.; Iijima, T.; Ikado, K.; Imoto, A.; Inami, K.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, M.; Kaji, Hiroshi; Kang, J. H.; Kapusta, P.; Katayama, N.; Khan, H. R.; Kichimi, H.; Kim, Y. J.; Kinoshita, K.; Korpar, S.; Križan, P.; Krokovny, P.; Kulasiri, R.; Kumar, R.; Kuo, C. C.; Kuzmin, A.; Kwon, Y. J.; Leder, G.; Lee, J.; Lee, M. J.; Lee, S. E.; Lesiak, T.; Lin, S. W.; Liventsev, D.; Majumder, G.; Mandl, F.; Matsumoto, T.; Matyja, A.; McOnie, S.; Miyake, H.; Miyata, H.; Miyazaki, Y.; Nakao, M.; Natkaniec, Z.; Nishida, S.; Ogawa, S.; Ohshima, T.; Okuno, S.; Onuki, Y.; Ozaki, H.; Pakhlov, P.; Pakhlova, G.; Park, H.; Park, K. S.; Peak, L. S.; Pestotnik, R.; Piilonen, L. E.; Sakai, Y.; Satoyama, N.; Schneider, O.; Schümann, J.; Seidl, R.; Senyo, K.; Sevior, M. E.; Shapkin, M.; Shibuya, H.; Singh, Jagbir; Somov, A.; Soni, N.; Stanič, S.; Starič, M.; Stoeck, H.; Suzuki, S.; Takasaki, F.; Tamai, K.; Tanaka, Minoru; Taylor, G. N.; Teramoto, Y.; Tian, X. C.; Tikhomirov, I.; Tsuboyama, T.; Tsukamoto, T.; Uehara, S.; Uglov, T.; Ueno, K.; Uno, S.; Urquijo, P.; Usov, Y.; Varner, G.; Villa, S.; Wang, M.-Z.; Watanabe, Y.; Won, E.; Xie, Qingguo; Yabsley, B.; Yamaguchi, A.; Yamashita, Y.; Yamauchi, M.; Yuan, C. Z.; Zhang, L. M.; Zhang, Z. P.; Zhilich, V.; Zupanc, A.

doi:10.1103/physrevd.88.074026

Cited by 172 publications

(151 citation statements)

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“…In the following years, the Belle Collaboration continued their studies on the Z + (4430) [104,106,107]. We summarize the information of the resonance parameters from all these Belle experiments in Table 4.…”

Section: +30mentioning

confidence: 99%

“…In Ref. [106] the Belle Collaboration performed a full amplitude analysis of B 0 → K + π − ψ(3686) decays to determine the spin and parity of the Z + (4430). Their results show that the Z + (4430) has quantum numbers J P = 1 + , this hypothesis being favored over the 0 − , 1 − , 2 − and 2 + hypotheses at the levels of 3.4σ, 3.7σ, 4.7σ and 5.1σ, respectively.…”

Section: +30mentioning

confidence: 99%

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The hidden-charm pentaquark and tetraquark states

et al. 2016

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In the past decade many charmonium-like states were observed experimentally. Especially those charged charmoniumlike Z c states and bottomonium-like Z b states can not be accommodated within the naive quark model. These charged Z c states are good candidates of either the hidden-charm tetraquark states or molecules composed of a pair of charmed mesons. Recently, the LHCb Collaboration discovered two hidden-charm pentaquark states, which are also beyond the quark model. In this work, we review the current experimental progress and investigate various theoretical interpretations of these candidates of the multiquark states. We list the puzzles and theoretical challenges of these models when confronted with the experimental data. We also discuss possible future measurements which may distinguish the theoretical schemes on the underlying structures of the hidden-charm multiquark states.

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Section: +30mentioning

confidence: 99%

Section: +30mentioning

confidence: 99%

The hidden-charm pentaquark and tetraquark states

et al. 2016

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“…Subsequently, in 2013 Belle performed a reanalysis using more data containing ≈2000 signal events, and employing a fit to the decay amplitudes using two decay sequences one B 0 → J/ψ K * 0 , K * 0 → π − K + and B 0 → Z − K + , Z − → ψ π − and allowing for interferences. [31]. The result changed somewhat with the mass now being 4485 ± 22 +28 −11 MeV and width 200 +41+26 −46−35 MeV, considerably larger than in their original paper.…”

Section: The Z(4430) − Tetraquark Candidatementioning

confidence: 74%

Exotic hadrons at hadron colliders

Stone¹

2016

Proceedings of Flavor Physics &Amp; CP Violation 2015 — PoS(FPCP2015)

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Exotic resonant structures found in Λ 0 b and B 0 decays into charmonium in the LHCb experiment are discussed. Examination of the J/ψ p system in Λ 0 b → J/ψ K − p decays shows two states each of which must be composed of uudcc quarks, and thus are called charmonium pentaquarks. Their masses are 4380 ± 8 ± 29 MeV and 4449.8 ± 1.7 ± 2.5 MeV, and their corresponding widths (Γ) are 205 ± 18 ± 86 MeV, and 39 ± 5 ± 19 MeV. The preferred J P assignments are of opposite parity, with one state having spin 3/2 and the other 5/2. Models of internal binding of the pentaquark states are discussed. Finally, another mesonic state is discussed, the Z(4430) − that decays into ψ π − and was first observed by the Belle collaboration in B 0 → ψ K + π − decays. Using a sample of approximately 25,000 signal events, LHCb determines the J P to be 1 + .

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“…The Belle Collaboration reported details about the observation of a narrow (∼ 45 MeV) resonance at 4430 MeV in the ψ ′ π − mass distribution in B 0 → ψ ′ K + π − decays [6]. This resonance could be interpreted as the four quark state.…”

Section: Pos(charged2014)014mentioning

confidence: 99%

Results from b-physics

Pugatch¹

2015

Proceedings of Prospects for Charged Higgs Discovery at Colliders — PoS(Charged2014)

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LHCb and Belle experiments have collected rich data on b-physics. We present an overview of recently performed measurements on B meson production cross-sections, lifetime, decay mode, branching ratios, angular distribution of decay products and CP violation which have been performed to cross-check predictions of the Standard Model and to search for New Physics (NP). Nearly all current results agree with the Standard Model expectations within measurement uncertainties.

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Experimental constraints on the spin and parity of theZ(4430)+

Cited by 172 publications

References 20 publications

The hidden-charm pentaquark and tetraquark states

The hidden-charm pentaquark and tetraquark states

Exotic hadrons at hadron colliders

Results from b-physics

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