Published January 7, 2002
| Version v1
Journal article
Properties of the Λ(1670) (1/2)- resonance
Creators
- Manley, D.M.1
- Olmsted, J.1
- Abaev, V.V.2
- Bekrenev, V.2
- Kulbardis, A.A.2
- Kozlenko, N.G.2
- Kruglov, S.2
- Lopatin, I.V.2
- Allgower, C.E.3
- Spinka, H.3
- Briscoe, W.J.4
- Shafi, A.4
- Strakovsky, I.I.4
- Clajus, M.5
- Marusic, A.5
- McDonald, S.5
- Nefkens, B.M.K.5
- Phaisangittisakul, N.5
- Prakhov, S.5
- Price, J.W.5
- and others
- Crystal Ball Collaboration
- 1. Kent State University, Kent, Ohio 44242-0001 (United States)
- 2. Petersburg Nuclear Physics Institute, Gatchina 188350 (Russian Federation)
- 3. Argonne National Laboratory, Argonne, Illinois 60439-4815 (United States)
- 4. George Washington University, Washington, D.C. 20052-0001 (United States)
- 5. University of California Los Angeles, Los Angeles, California 90095-1547 (United States)
Description
Recently the Crystal Ball Collaboration measured precise new data for the near-threshold reaction K-p→ηΛ , which is dominated by formation of the Λ(1670)(1/ 2)- . In this Letter, we present results of a unitary, multichannel analysis that incorporates the new Crystal Ball data. For our preferred fit, we obtain mass M=1673±2 MeV , width Γ=23±6 MeV , and elasticity x=0.37±0.07 . This elasticity is significantly larger than previously recognized. Resonance parameters of our preferred fit are in striking agreement with the quark-model predictions of Koniuk and Isgur
Additional details
Identifiers
Publishing Information
- Journal Title
- Physical Review Letters
- Journal Volume
- 88
- Journal Issue
- 1
- Journal Page Range
- p. 012002-012002.4
- ISSN
- 0031-9007
- CODEN
- PRLTAO
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35011072
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- BARYONS; HADRONIC PARTICLE DECAY; KAON REACTIONS; KAON-PROTON INTERACTIONS; LAMBDA BARYONS; MASS; QUARK MODEL; RESONANCE
- Descriptors DEC
- BARYONS; CHARGED-PARTICLE REACTIONS; COMPOSITE MODELS; DECAY; ELEMENTARY PARTICLES; FERMIONS; HADRON REACTIONS; HADRON-HADRON INTERACTIONS; HADRONS; HYPERONS; INTERACTIONS; KAON-NUCLEON INTERACTIONS; MATHEMATICAL MODELS; MESON REACTIONS; MESON-BARYON INTERACTIONS; MESON-NUCLEON INTERACTIONS; NUCLEAR REACTIONS; PARTICLE DECAY; PARTICLE INTERACTIONS; PARTICLE MODELS; STRANGE PARTICLES
Optional Information
- Notes
- (c) 2001 The American Physical Society
- Collaborations
- Crystal Ball Collaboration