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Physics
High Energy, Nuclear, Particle Physics
Upper end of nucleon overtones
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[QUOTE="Astronuc, post: 6564097, member: 15685"] If one were to consider two star (**), then one would note higher energy resonances. ** = evidence of existence is fair. Isn't it a bit arbitrary to consider only **** and ***, which means "Existence is certain" or "Existence is very likely"? If one considers the ** entries, then one would observe ∆(2950) 15/2[SUP]+[/SUP], but the existence is fair (**). Ostensibly, there is some theoretical basis. So, to increase it to ***, what experimental evidence is needed? From 2019 - [URL]https://pdg.lbl.gov/2019/reviews/rpp2019-rev-n-delta-resonances.pdf[/URL] compare to 2006 - [URL]https://www.jlab.org/conferences/Nstar/talks/Capstick.pdf[/URL] (slides 9 and 13). Also see, cautionary notes on Slides 15 and 16. Slide 15 of Capstick's 2006 presentation - "“In the search for ‘missing’ quark-model states, indications of new structures occasionally are found. Often these are associated (if possible) with the one- and two-star states listed in Table 1. We caution against this: The status of the one-and two-star states found in the Karlsruhe-Helsinki (KH80) and Carnegie-Mellon/Berkeley (CMB80) fits is now doubtful.”" A seemingly more skeptical tone is expressed on Slide 16 - "1* states are a dream, 2* states are a fantasy," which is attributed to Steve Dytman, 2005 See also Capstick, Slide 21 [/QUOTE]
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High Energy, Nuclear, Particle Physics
Upper end of nucleon overtones
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