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Production of the kappa meson in K--p interactions

Journal Article · · Physics Letters
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The recent work at Berkeley on π-p interactions has given evidence for the existence of an excited state in the Kπ system at ~725 MeV which has been called the κ meson. To search for this effect in k-p interactions, we have undertaken a systematic analysis of the reaction K- + p K-bar0 + π- + p over the range of momenta from 1.0 to 1.7 GeV/c. We find a significant enhancement centered at 723 ± 3 MeV, with a width less than 12 MeV. We cannot rule out the possibility that the observed width is due entirely to the experimental resolution. because of insufficient statistics we are unable to draw any conclusions as to the spin or parity of this resonance. Some theoretical implications of the κ are considered.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
US Atomic Energy Commission (AEC)
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
1163565
Report Number(s):
UCRL--10761-REV.
Journal Information:
Physics Letters, Journal Name: Physics Letters Journal Issue: 4 Vol. 5; ISSN 0031-9163
Publisher:
Elsevier
Country of Publication:
United States
Language:
English

References (12)

K−−pandK−−nCross Sections in the Momentum Range 1-4 Bev/c journal July 1961
Eightfold-Way Assignments forY1*(1660)and Other Baryons journal March 1963
1660-MeVY1*Hyperon journal March 1963
Search forρ-Meson Decay intoη+π journal April 1962
Possibility for Copious Production of the Intermediate Vector Bosons journal March 1963
Symmetries of Baryons and Mesons journal February 1962
Production of Strange-Particle Resonant States by 2.1-BeV/cπ−Mesons journal June 1962
MMeson and a Generalization of the Pomeranchuk Relations journal December 1962
K−πResonance and Lifetime of theK′Particle journal February 1961
A Kπ resonant state at 726 MeV journal July 1963
Spin of theK′ journal April 1961
Derivation of strong interactions from a gauge invariance journal August 1961

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Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS