Observation of excited 
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 charmed baryons in 
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 collisions

Yelton, J.; Adachi, I.; Aihara, H.; Said, S. Al; Asner, D. M.; Aulchenko, V.; Aushev, T.; Ayad, R.; Aziz, T.; Babu, V.; Bakich, A. M.; Bansal, V.; Barberio, E.; Behera, P. K.; Berger, Martin; Bhardwaj, V.; Bhuyan, B.; Biswal, Jyoti Prakash; Bobrov, A.; Bożek, A.; Bračko, M.; Browder, T. E.; Červenkov, D.; Chang, P.; Chen, A.; Cheon, B. G.; Chilikin, K.; Cho, K.; Choi, S.-K.; Choi, Y.; Choudhury, S.; Cinabro, D.; Czank, T.; Dash, N.; Carlo, S. Di; Doležal, Z.; Dutta, D.; Eidelman, S.; Fast, J. E.; Ferber, T.; Fulsom, B. G.; Garg, Rocky Bala; Gaur, V.; Gabyshev, N.; Garmash, A.; Gelb, M.; Giri, A.; Goldenzweig, P.; Golob, B.; Greenwald, D.; Guido, E.; Haba, J.; Hayasaka, K.; Hayashii, H.; Hedges, M. T.; Hou, W.-S.; Inami, K.; Inguglia, G.; Ishikawa, A.; Itoh, R.; Iwasaki, M.; Iwasaki, Y.; Jacobs, W. W.; Jeon, H. B.; Jin, Y.; Julius, T.; Kang, K. H.; Karyan, G.; Kato, Y.; Kawasaki, T.; Kichimi, H.; Kim, D. Y.; Kim, H. J.; Kim, J. B.; Kim, S. H.; Kinoshita, K.; Kodyš, P.; Korpar, S.; Kotchetkov, D.; Križan, P.; Kroeger, R.; Krokovny, P.; Kuhr, T.; Kulasiri, R.; Kumita, T.; Kuzmin, A.; Kwon, Y. J.; Lange, J. S.; Lee, I. S.; Lee, S. C.; Li, C. H.; Li, L. K.; Li, Y.; Gioi, L. Li; Liventsev, D.; Lubej, M.; Luo, T.; Masuda, M.; Matvienko, D.; Merola, M.; Miyata, H.; Mizuk, R.; Mohanty, G. B.; Moon, H. K.; Mori, Takashi; Mussa, R.; Nakano, E.; Nakao, M.; Nanut, T.; Nath, K. J.; Nayak, M.; Niiyama, M.; Nisar, N. K.; Nishida, S.; Ogawa, S.; Okuno, S.; Ono, H.; Pakhlov, P.; Pakhlova, G.; Pal, B. K.; Park, H.; Paul, S.; Pavelkin, I.; Pedlar, T. K.; Pestotnik, R.; Piilonen, L. E.; Popov, V.; Ritter, M.; Russo, G.; Sakai, Y.; Sandilya, S.; Savinov, V.; Schneider, O.; Schnell, G.; Schwanda, C.; Seino, Y.; Sevior, M. E.; Shebalin, V.; Shen, C. P.; Shibata, T. A.; Shimizu, Nobuhiro; Shiu, J. G.; Shwartz, B.; Simon, F.; Singh, Jagbir; Solovieva, E.; Starič, M.; Strube, J.; Sumihama, M.; Sumiyoshi, T.; Suzuki, K.; Takizawa, M.; Tamponi, U.; Tanida, K.; Tenchini, F.; Uchida, M.; Uglov, T.; Unno, Y.; Uno, S.; Usov, Y.; Varner, G.; Varvell, K. E.; Vinokurova, A.; Vorobyev, V.; Wang, C. H.; Wang, M.-Z.; Wang, P.; Wang, X. L.; Watanabe, Y.; Watanuki, S.; Widmann, E.; Won, E.; Ye, H.; Yusa, Y.; Zakharov, S.; Zhang, Z. P.; Zhilich, V.; Zhulanov, V.; Zupanc, A.

doi:10.1103/physrevd.97.051102

Cited by 103 publications

(71 citation statements)

References 17 publications

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“…Recently, the LHCb Collaboration observed five narrow states, Ω c ð3000Þ 0 , Ω c ð3050Þ 0 , Ω c ð3066Þ 0 , Ω c ð3090Þ 0 , and Ω c ð3119Þ 0 [29], four of which have also been recently confirmed from an analysis of the Belle data [30]. These states can be accommodated as excited Ω c baryons [31,32], as compact baryons in which the ss strange quark pair forms a diquark [33], or as molecular states [34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 79%

DΞ and D*Ξ molecular states from one boson exchange

Liu

Xie

et al. 2018

Phys. Rev. D

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Section: Introductionmentioning

confidence: 79%

DΞ and D*Ξ molecular states from one boson exchange

Liu

Xie

et al. 2018

Phys. Rev. D

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“…excited Ω * c -baryons recently observed by the LHCb [57] and Belle [58] collaborations. To understand the uncertainty of (K cs )3, we performed the χ 2 -analysis based on the masses of these baryons [57,58], which yields (K cs )3 = (2.01 ± 0.20) MeV. The details of this analysis are in appendix C. This yields 10% error on (K cs )3, which we assume as an uncertainty on all the spin-spin couplings.…”

Section: Input Parametersmentioning

confidence: 85%

“…A similar analysis [51,53], performed for the orbitally-excited Ω c -baryons, yields even smaller values, 2 a 1 = (13.45 ± 0.13) MeV and a 2 = (12.94 ± 0.36) MeV, for the spin-orbit interactions of the {ss}-diquark and charm antiquark, respectively. The uncertainties in these values result from the χ 2 -analysis of the Ω * c -baryon masses [57,58] and the details of this analysis are also presented in appendix C. The errors in these couplings are typically a few percent and are substantially smaller than the relative error from the Y -tetraquark spectrum which is approximately 14%.…”

Section: Input Parametersmentioning

confidence: 99%

“…whereμ (1/2) = 2µ (1/2) /(Kc q + Kc c ). The last matrix can be diagonalized by using the orthogonal transformations and we get the following set of masses: Existing experimental data on the masses of orbitally-excited Ω * c -baryons were obtained by the LHCb [57] and Belle [58] Table 15. Experimental data from the LHCb [57] and Belle [58] collaborations.…”

Section: Aaaa-a16-116070610023-3)mentioning

confidence: 99%

See 1 more Smart Citation

Mass spectrum of the hidden-charm pentaquarks in the compact diquark model

Ali

Ahmed

Aslam

et al. 2019

J. High Energ. Phys.

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The LHCb collaboration have recently updated their analysis of the resonant J/ψ p mass spectrum in the decay Λ 0 b → J/ψ p K − , making use of their combined Run 1 and Run 2 data. In the updated analysis, three narrow states, P c (4440) + , P c (4457) + , and P c (4312) + , are observed. The spin-parity assignments of these states are not yet known. We interpret these narrow resonances as compact hidden-charm diquark-diquarkantiquark pentaquarks. Using an effective Hamiltonian, based on constituent quarks and diquarks, we calculate the pentaquark mass spectrum for the complete SU (3) F lowest Sand P -wave multiplets, taking into account dominant spin-spin, spin-orbit, orbital and tensor interactions. The resulting spectrum is very rich and we work out the quark flavor compositions, masses, and J P quantum numbers of the pentaquarks. However, heavy quark symmetry restricts the observable states in Λ b -baryon, as well as in the decays of the other weakly-decaying b-baryons, Ξ b and Ω b . In addition, some of the pentaquark states are estimated to lie below the J/ψ p threshold in Λ b -decays (and corresponding thresholds in Ξ b -and Ω b -decays). They decay via cc annihilation into light hadrons or a dilepton pair, and are expected to be narrower than the P c -states observed. We anticipate their discovery, as well as of the other pentaquark states present in the spectrum at the LHC, and in the long-term future at a Tera-Z factory.

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“…Much part of the recent activities in hadron spectroscopy is devoted to the study of hadrons containing heavy quarks [1] (and references therein). This is largely motivated by a series of observations of new heavy hadrons [2][3][4][5][6][7][8][9][10][11][12][13][14][15], which have not been expected in the conventional naive quark model [16,17]. In order to understand the production mechanism of these newly found heavy hadrons including the exotic ones, we need to consider more sophisticated quark-gluon dynamics inside a heavy hadron.…”

Section: Introductionmentioning

confidence: 99%

Strange and Charmed Baryon Productions with an Instanton Interaction

Shim

Kim

2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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We propose a new reaction mechanism for the study of strange and charmed baryon productions. In this mechanism we consider the correlation of two quarks in baryons, so it can be called the two-quark process. As in the previously studied one-quark process, we find large production rates for charmed baryons in comparison with strange baryons. Moreover, the new mechanism causes the excitation of both the ρ mode and the λ mode. Using a quark model for baryon wave functions and the instanton-induced interaction for the two-quark process, we compute production rates of various baryon states for the study of the baryon structures. Existing experimental data of strangeness productions may suggest a mixture of the one-quark and two-quark processes in explaining the productions of the strange baryons. *

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Observation of excited Ωc charmed baryons in e+e− collisions

Cited by 103 publications

References 17 publications

DΞ and D*Ξ molecular states from one boson exchange

DΞ and D*Ξ molecular states from one boson exchange

Mass spectrum of the hidden-charm pentaquarks in the compact diquark model

Strange and Charmed Baryon Productions with an Instanton Interaction

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