Formation of a narrow baryon resonance with positive strangeness in K{sup +} collisions with Xe nuclei

Journal Article · Thu Jul 15 00:00:00 EDT 2010 · Physics of Atomic Nuclei

DOI:https://doi.org/10.1134/S1063778810070100· OSTI ID:21426700

Barmin, V V; Asratyan, A E; Borisov, V S ^[1]; Curceanu, C ^[2]; Davidenko, G V; Guaraldo, C ^[2]; Kubantsev, M A; Larin, I F; Matveev, V A; Shebanov, V A; Shishov, N N; Sokolov, L I; Tumanov, G K; Verebryusov, V S ^[1]

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1. Institute of Theoretical and Experimental Physics (Russian Federation)
2. Laboratori Nazionali di Frascati dell' INFN (Italy)

The data on the charge-exchange reaction K{sup +}Xe {sup {yields}}K{sup 0}pXe', obtained with the bubble chamber DIANA, are reanalyzed using increased statistics and updated selections. Our previous evidence for formation of a narrow pK{sup 0} resonance with mass near 1538 MeV is confirmed. The statistical significance of the signal reaches some 8{sigma} (6{sigma}) standard deviations when estimated as S/{radical}B (S/{radical}B + S. The mass and intrinsic width of the {Theta}{sup +} baryon are measured as m = 1538 {+-} 2 MeV and {Gamma} = 0.39 {+-} 0.10 MeV.

• OSTI ID: 21426700
• Journal Information: Physics of Atomic Nuclei, Vol. 73, Issue 7; Other Information: DOI: 10.1134/S1063778810070100; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7788
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BUBBLE CHAMBERS
CHARGE-EXCHANGE REACTIONS
COLLISIONS
ERRORS
KAONS PLUS
RESONANCE PARTICLES
STRANGENESS
XENON
BOSONS
ELEMENTARY PARTICLES
ELEMENTS
FERMIONS
FLUIDS
GAS TRACK DETECTORS
GASES
HADRONS
KAONS
MEASURING INSTRUMENTS
MESONS
NONMETALS
NUCLEAR REACTIONS
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
RADIATION DETECTORS
RARE GASES
STRANGE MESONS
STRANGE PARTICLES