6533b871fe1ef96bd12d1858

RESEARCH PRODUCT

Direct Observation of aρDecay of theD13(1520)Baryon Resonance

Jd McgregorW LanggartnerM. KotullaJ. AhrensV. MetagR. W. NovotnyV. HejnyS. SchadmandVo De LeonR.o. OwensB. KruscheF. WissmannR. BeckJ. G. MesschendorpU. SiodlaczekWg KuhrF. RamboA. SchmidtR. LeukelMatthias WolfH. StröherJ. Weiss

subject

PhysicsProton010308 nuclear & particles physicsGeneral Physics and AstronomyResonancePhoton energy01 natural sciencesSpectral lineBaryon0103 physical sciencesMass spectrumInvariant massAtomic physics010306 general physicsNucleon

description

The reaction {gamma}p{yields}{pi}{sup +}{pi}{sup 0}n has been measured at MAMI for photon energies up to 820MeV. Invariant mass spectra of the particles in the final state ({pi}{sup +}n) , ({pi}{sup 0}n) , ({pi}{sup +}{pi}{sup 0}) have been determined for several bins of incident photon energy. Differences in {pi}{sup +}{pi}{sup 0} and simultaneously measured {pi}{sup 0}{pi}{sup 0} invariant mass distributions are assigned to a {rho} branch of the D{sub 13}(1520) nucleon resonance.

yearjournalcountryeditionlanguage
2001-07-11Physical Review Letters
https://doi.org/10.1103/physrevlett.87.052001