Evidence for narrow baryons in inelastic p p scattering

Tatischeff, B.; Willis, N.; Comets, M.P.; Courtat, P.; Gacougnolle, R.; Le Bornec, Y.; Loireleux, E.; Reide, F.; Yonnet, J.; Boivin, M.

doi:10.1103/PhysRevLett.79.601

Evidence for narrow baryons in inelastic p p scattering

1997

12 pages

Published in:

Phys.Rev.Lett. 79 (1997) 601-604

DOI:

10.1103/PhysRevLett.79.601

Report number:

IPNO-DRE-97-18

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Abstract: (APS)

The reaction pp→pπ+N has been studied at three energies ( Tp=1520, 1805, and 2100 MeV) and six angles from 0° up to 17° (laboratory). Several narrow states have been observed in missing mass spectra at 1004, 1044, and 1094 MeV. Their widths are typically 1 order of magnitude smaller than the widths of N* or Δ. Possible biases are discussed. These masses are in good agreement with those calculated within a simple phenomenological mass formula based on color magnetic interaction between two colored quark clusters.

p p: inelastic scattering
inelastic scattering: p p
p p: inclusive reaction
baryon resonance: hadroproduction
hadroproduction: baryon resonance
baryon resonance: mass spectrum
mass spectrum: baryon resonance
baryon resonance: width
width: baryon resonance
approximation: narrow resonance

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