Partial-wave amplitudes and resonances in {bar p}+p{r_arrow}{pi}+{pi}

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.56.1114· OSTI ID:528190

Martin, B R ^[1]; Oades, G C ^[2]

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1. Department of Physics and Astronomy, University College London, London WC1E 6BT (England)
2. Institute of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

Partial-wave amplitudes have been extracted from accurate data on {ovr p}p{r_arrow}{pi}{sup {minus}}{pi}{sup +}, combined with earlier data on {bar p}p{r_arrow}{pi}{sup 0}{pi}{sup 0}, by a method which incorporates the theoretical constraints of analyticity and crossing symmetry. The resulting solution gives a good fit to the annihilation data and is also consistent with the wealth of information in the crossed channel {pi}N{r_arrow}{pi}N. The partial-wave amplitudes show evidence for resonances in all partial waves with J{le}5, at least one of which, a J=0{sup +} state (and possibly another with J=1{sup {minus}}), is unlikely to have a simple q{bar q} structure. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 528190
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 2 Vol. 56; ISSN PRVCAN; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
AMPLITUDES
CROSSING SYMMETRY
PARTIAL WAVES
PARTICLE PRODUCTION
PIONS
PROTON-ANTIPROTON INTERACTIONS
PROTON-PROTON INTERACTIONS
RESONANCE