Strangeness Photoproduction at the BGO-OD Experiment

Jude, T. C.; Alef, S.; Bayadilov, D.; Beck, R.; Becker, M.; Bella, A.; Bielefeldt, P.; Boese, S.; Braghieri, A.; Brinkmann, K.-Th.; Cole, P. L.; Curciarello, F.; Leo, V. De; Salvo, R. Di; Dutz, H.; Elsner, D.; Fantini, A.; Freyermuth, O.; Friedrich, Stefan; Frommberger, F.; Ganenko, V. B.; Gervino, G.; Ghio, F.; Giardina, G.; Goertz, Stefan; Gridnev, A.; Gutz, E.; Hammann, D.; Hannappel, J.; Hartmann, Péter; Hillert, W.; Ignatov, A.; Jahn, R.; Joosten, R.; Клейн, Ф.; Koop, K.; Krusche, B.; Lapik, A.; Sandri, P. Levi; Lopatin, I.; Mandaglio, G.; Messi, F.; Messi, R.; Metag, V.; Moricciani, D.; Mushkarenkov, A.; Nanova, M.; Nedorezov, V.; Novinskiy, D.; Pedroni, P.; Reitz, B.; Romaniuk, M.; Rostomyan, T.; Rudnev, N.; Scheluchin, G.; Schmieden, H.; Stugelev, A.; Sumachev, V. V.; Тараканов, В. И.; Vegna, V.; Walther, Dirk; Watts, D. P.; Zaunick, Hans-Georg; Zimmermann, T.

doi:10.7566/jpscp.10.032002

Cited by 3 publications

(4 citation statements)

References 32 publications

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“…These results are backed up by two resonances of negative parity around this region of energy, N * (2080)(3/2 − ) and N * (2090)(1/2 − ), that appeared in earlier versions of the PDG, and by a 3/2 − state around 2080 MeV found to explain SPring 8 LEPS data on the γ p → K + Λ(1520) reaction in [49]. This is further supported by the recent measurement of the neutral γ n → K 0 Σ 0 cross section by the BGO-OD collaboration [50,51], shown in the the lower panel of Fig. 5, together with the prediction of the model for several parameter sets.…”

Section: A Selected New Case In Su(3)supporting

confidence: 62%

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The Molecular Nature of Some Exotic Hadrons

Ramos

Feijoo²,

Llorens

et al. 2020

Few-Body Syst

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The exciting discovery by LHCb of the P c (4312) + and P c (4450) + pentaquarks, or the suggestion of a tetraquark nature for the Z c (3900) state seen at BESIII and Belle, have triggered a lot of activity in the field of hadron physics, with new experiments planned for searching other exotic mesons and baryons, and many theoretical developments trying to disentangle the true multiquark nature from their possible molecular origin. After a brief review of the present status of these searches, this paper focusses on recently seen or yet to be discovered exotic heavy baryons that may emerge from a conveniently unitarized meson-baryon interaction model in coupled channels. In particular, we will show how interferences between the different coupled-channel amplitudes of the model may reveal the existence of a N * resonance around 2 GeV having a meson-baryon quasi-bound state nature. We also discuss the possible interpretation of some of the Ω c states recently discovered at LHCb as being hadron molecules. The model also predicts the existence of doublycharmed quasibound meson-baryon Ξ cc states, which would be excited states of the ground-state Ξ cc (3621) MeV, whose mass has only been recently established. Extensions of these results to the bottom sector will also be presented. Composite Hadrons: A Brief ReviewThe basic constituents of matter in QCD are quarks and gluons. Although hadrons, the colourless objects of the theory, could be realized in many complicated combinations of the elementary constituents, the conventional

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Section: A Selected New Case In Su(3)supporting

confidence: 62%

“…(upper panel). Scaled predictions for the γ n → K 0 Σ 0 cross section using two parameter sets, compared with the recent BGO-OD data[50,51] (lower panel)…”

mentioning

confidence: 99%

The Molecular Nature of Some Exotic Hadrons

Ramos

Feijoo²,

Llorens

et al. 2020

Few-Body Syst

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“…Data: CBELSA/TAPS 2020 [46] Fig. 19 Fit results of P, G, and H for the reaction γ p → ηp. Data: CBELSA/TAPS 2020 [46] Ref.…”

Section: Appendix B: Further Fit Resultsmentioning

confidence: 99%

“…[17,18] for reviews or Ref. [19] for prospects of upcoming strangeness production experiments at BGOOD. Among the different photoproduction channels, the γ N → K Y reactions are unique candidates for a "complete experiment" [20], as the self-analyzing weak decay of the hyperons facilitates the determination of recoil polarization observables.…”

Section: Introductionmentioning

confidence: 99%

Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction

et al. 2022

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The Jülich-Bonn dynamical coupled-channel approach is extended to include $$K\Sigma $$ K Σ photoproduction off the proton. Differential cross section and (double) polarization data for $$K^+\Sigma ^0$$ K + Σ 0 and $$K^0\Sigma ^+$$ K 0 Σ + are analysed simultaneously with the pion- and photon-induced production of $$\pi N$$ π N , $$\eta N$$ η N , $$K\Lambda $$ K Λ , and $$K\Sigma $$ K Σ final states, totaling almost 72,000 data points for center-of-mass energies $$W<2.4$$ W < 2.4 GeV. Based on the fit results the spectrum of $$N^*$$ N ∗ and $$\Delta $$ Δ resonances is extracted in terms of pole positions and residues. We discuss the impact of the $$\gamma p\rightarrow K\Sigma $$ γ p → K Σ channels in detail and investigate the influence of recent polarization data for $$\eta p$$ η p photoproduction.

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Determination of the real part of theη′-Nb optical potential

Nanova¹,

Friedrich²,

Metag³

et al. 2016

Phys. Rev. C

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ReuseItems deposited in White Rose Research Online are protected by copyright, with all rights reserved unless indicated otherwise. They may be downloaded and/or printed for private study, or other acts as permitted by national copyright laws. The publisher or other rights holders may allow further reproduction and re-use of the full text version. This is indicated by the licence information on the White Rose Research Online record for the item. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request.PHYSICAL REVIEW C 94, 025205 (2016) Determination of the real part of the η ′ -Nb optical potential The excitation function and momentum distribution of η ′ mesons have been measured in photoproduction off 93 Nb in the energy range of 1.2-2.9 GeV. The experiment has been performed with the combined Crystal Barrel and MiniTAPS detector system, using tagged photon beams from the ELSA electron accelerator. Information on the sign and magnitude of the real part of the η ′ -Nb potential has been extracted from a comparison of the data with model calculations. An attractive potential of −(41 ± 10(stat) ± 15(syst)) MeV depth at normal nuclear matter density is deduced within model uncertainties. This value is consistent with the potential depth of −(37 ± 10(stat) ± 10(syst)) MeV obtained in an earlier measurement for a light nucleus (carbon). This relatively shallow η ′ -nucleus potential will make the search for η ′ -nucleus bound states more difficult.

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Strangeness Photoproduction at the BGO-OD Experiment

Cited by 3 publications

References 32 publications

The Molecular Nature of Some Exotic Hadrons

The Molecular Nature of Some Exotic Hadrons

Light baryon resonances from a coupled-channel study including $$\mathbf {K\Sigma }$$ photoproduction

Determination of the real part of theη′-Nb optical potential

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