Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer

Jude, Thomas; Alef, S.; Bauer, Patrick; Bayadilov, D.; Beck, R.; Bella, A.; Bieling, J.; Braghieri, A.; Cole, P. L.; Elsner, D.; Salvo, R. Di; Fantini, A.; Freyermuth, O.; Frommberger, F.; Ghio, F.; Goertz, S.; Gridnev, A.; Hammann, D.; Hannappel, J.; Kohl, Katrin; Kozlenko, N.; Lapik, A.; Sandri, P. Levi; Lisin, V.; Mandaglio, G.; Messi, F.; Messi, R.; Moricciani, D.; Nedorezov, V.; Nikonov, V. A.; Novinskiy, D.; Pedroni, P.; Polonskiy, A.; Reitz, B.; Romaniuk, M.; Sarantsev, A.; Scheluchin, G.; Schmieden, H.; Stuglev, A.; Sumachev, V. V.; Vegna, V.; Тараканов, В. И.; Zimmermann, T.

doi:10.1016/j.physletb.2021.136559

Cited by 10 publications

(6 citation statements)

References 37 publications

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“…2 from the same reference. Systematic uncertainties of the data are shown as brown bars also qualitatively explains the "cusp-like" structure observed in a recent measurements of the forward differential cross section for K + 0 photoproduction by the BGOOD experiment [82], as can be seen in Fig. 12.…”

Section: Discussion Of Specific Resonancessupporting

confidence: 78%

“…12. This cusp in the data might be sharper at extreme forward angles [82], but our data description in forward direction is, overall, quite good except for a few points, see Fig. 2.…”

Section: Discussion Of Specific Resonancesmentioning

confidence: 63%

“…The extracted multipole amplitudes for γ p → K + 0 and K 0 + can be found in Appendix A. One of the striking features of the K photoproduction data is the appearance of relatively sharp drops in cross section of both charge final states, especially for K + 0 [82]. This issue is discussed in the next section.…”

Section: Fit Resultsmentioning

confidence: 93%

“…Moreover, differential cross sections at forward angles of older data sets between W = 1680 MeV and 2000 MeV are not taken into account. To avoid inconsistencies, we fit instead the very recent measurement from the BGOOD experiment at ELSA [82]. The BGOOD data on dσ/d and P at forward angles for K + photoproduction [83] are also included.…”

Section: Data Basementioning

confidence: 99%

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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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Section: Discussion Of Specific Resonancessupporting

confidence: 78%

“…12. This cusp in the data might be sharper at extreme forward angles [82], but our data description in forward direction is, overall, quite good except for a few points, see Fig. 2.…”

Section: Discussion Of Specific Resonancesmentioning

confidence: 63%

Section: Fit Resultsmentioning

confidence: 93%

Section: Data Basementioning

confidence: 99%

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

et al. 2022

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“…The INFN-MAMBO Collaboration studies hadron photoproduction with and without polarization at different accelerators: ELSA (ELectron Stretcher Accelerator), delivering (un)polarized electrons in the 0.5-3.5 GeV energy range, in Bonn and MAMI (the Mainz Microtron). The BGOOD experiment, working at ELSA, is designed to investigate the hadron structure, studying exclusive channels of meson photoproduction on the nucleon [37][38][39]. It consists of two main parts: (1) a central detector with a Bismuth Germanium Oxide (BGO) crystal calorimeter, a plastic scintillator barrel and two Multi Wire Proportional Chambers (MWPCs); (2) a forward large aperture magnetic spectrometer.…”

Section: Mambo: Meson Photoproduction On Nucleon In the Bgood Experim...mentioning

confidence: 99%

Trends in particle and nuclei identification techniques in nuclear physics experiments

et al. 2022

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Particle identification techniques are fundamental tools in nuclear physics experiments. Discriminating particles or nuclei produced in nuclear interactions allows to better understand the underlying physics mechanisms. The energy interval of these reactions is very broad, from sub-eV up to TeV. For this reason, many different identification approaches have been developed, often combining two or more observables. This paper reviews several of these techniques with emphasis on the expertise gained within the current nuclear physics scientific program of the Italian Istituto Nazionale di Fisica Nucleare (INFN).

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The BGOOD experiment at ELSA Exotic structures in the strange quark sector?

et al. 2022

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Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer

Cited by 10 publications

References 37 publications

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

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

Trends in particle and nuclei identification techniques in nuclear physics experiments

The BGOOD experiment at ELSA Exotic structures in the strange quark sector?

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Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer

Cited by 10 publications

References 37 publications

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

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

Trends in particle and nuclei identification techniques in nuclear physics experiments

The BGOOD experiment at ELSA Exotic structures in the strange quark sector?

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Product

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Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer