The Sixth Conference on the Intersections of Particle and Nuclear Physcis 1997
DOI: 10.1063/1.54376
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Strangeness photoproduction with the SAPHIR detector

Abstract: Statistically improved data of total cross sections and of angular distributions for differential cross sections and hyperon recoil polarizations of the reactions γp → K + Λ and γp → K + Σ 0 have been collected with the SAPHIR detector at photon energies between threshold and 2.0 GeV. Here total cross section data up to 1.5 GeV are presented. The opposite sign of Λ and Σ polarization and the change of sign between forward and backward direction could be confirmed by higher statistics. A steep threshold behavio… Show more

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Cited by 14 publications
(24 citation statements)
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“…The discovery of the strange baryon Θ + at 1540 MeV [1][2][3][4][5][6][7][8][9][10][11] opened a new chapter in hadron spectroscopy. If confirmed by high statistics experiments, it will challenge the commonly used naive quark model that worked so well for almost four decades.…”
Section: Introductionmentioning
confidence: 99%
“…The discovery of the strange baryon Θ + at 1540 MeV [1][2][3][4][5][6][7][8][9][10][11] opened a new chapter in hadron spectroscopy. If confirmed by high statistics experiments, it will challenge the commonly used naive quark model that worked so well for almost four decades.…”
Section: Introductionmentioning
confidence: 99%
“…The simultaneous discovery of a resonance with similar mass and width decaying into a Ξ − π + provides evidence for a I = 3/2 iso-quadruplet. This completes a missing link of the anti-decuplet [4,5,6] which includes the recently discovered Θ + (1540) [7,8,9,10,11]. Moreover pentaquark structures have been observed in the lattice both with parity + and with parity - [12,13,14].…”
Section: Introductionmentioning
confidence: 57%
“…The pentaquarks have been revived recently by several searches of the Θ + (1540) 3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20 , first discovered at LEPS 3 , and by searches of the Ξ −− (1860) 21,22,23 and of the D * − p(3100) 24 , observed respectively at NA49 21 and at H1 24 . Pentaquark structures have also been studied on the lattice 25,26,27,28,29,30,31,32 .…”
mentioning
confidence: 99%