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期刊名称: Physics Letters B
Volume:542    Issue:1        Page:8-18
ISSN:0370-2693

Combined analysis of meson channels with I=1, C=−1 from 1940 to 2410 MeV期刊论文

作者: Anisovich A.V Baker C.A Batty C.J Bugg D.V Montanet L
DOI:10.1016/S0370-2693(02)02302-X

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页码: 8-18
被引频次: 35
出版者: Elsevier B.V,ELSEVIER
期刊名称: Physics Letters B
ISSN: 0370-2693
卷期: Volume:542    Issue:1
语言: English
摘要: New Crystal Barrel data are reported for pp → ωπ and pp → ωηπ with ω decaying to π π π . The shapes of angular distributions agree well with those for data where ω → π γ; this is a valuable cross-check on systematic errors. The new data provide good measurements of vector and tensor polarisations P , T , T and T of the ω. These lead to significant improvements in parameters of several resonances reported earlier. New values of masses and widths (in MeV) are: J = 5 (2300 ± 45, 260 ± 75), J = 3 (2260 ± 20, 160 ± 25), J = 1 (2240 ± 35, 320 ± 85), and J = 1 (2110 ± 35, 230 ± 50). A remarkable feature of the data is that vector polarisation P is close to zero everywhere. It follows that all interfering amplitudes have relative phases close to 0 or 180°. Tensor polarisations are large. © 2002 Elsevier Science B.V. All rights reserved.
相关主题: PHYSICS, NUCLEAR, RESONANCES, ASTRONOMY & ASTROPHYSICS, PHYSICS, PARTICLES & FIELDS,

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