Review of strange mesons Page: 1 of 31
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Presented at the Conference on
-Experimental Meson Spectroscopy
April 26-7, 1974,
Northeastern University, Boston, Mass.
REVIEW OF STRANGE MESONS
Brookhaven National Laboratory, Upton, New York 11973
A review of strange meson spectroscopy is presented.
The problem areas are still the status of the strange mem-
bers of the two 1+ nonets as well as the situation in the
high-mass K* region.
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In the short time I have here today I will try to present a gen-
eral review and point out some of the problems in strange meson
spectroscopy. In Fig. 1 is summarized what is essentially our present
knowledge of the status of bump-hunting. Here, at the intersection
of the grid of well-known nonets are indicated the resonances (or
enhancements) which are reasonably well established with the given
two-particle decay. Except for a few missing states (e.g. D meson)
most all known resonances are found with at least one of the possible
listed decay modes. The symbol N at an intersection spot means that
nothing of significance has been observed with the designated decay.
We will primarily be concerned with in:
Sect 11: What we know well: 0-, 1-, 2+ nonet
Sect III: Problem Arets: The Low-Mass Enhancements (LME)
Sect IV: High-Mass K 's
Sect V: Summary and Conclusions.
II. WHAT WE KNOW WELL
A. 0 nonet strange member - K(495): no comment.
R. 1 nonet strange member - K(890): no new results. The data on
K(890) properties is rather good. The mass difference between the
neutral and charged state has been measured (AM(K*O-K*-) - 5.7 + 1.7
MeV) and shown to be in the same direction as that of the ground
C. 2+ nonet strange member - K(1420):
1. JP: Aguilar-Benitez, et al.,1 have performed a J analysis
of the K(1420) produced in the reaction K-p * K-(1420)p for combined
data at 3.9 and 4.6 GeV/c. The analysis was done on a sample of
non-peripherally produced events [away from the w-exchange region so
that S-D interference effects are minimized]. The authors assume
that the K(1420) does not interfere with the background and perform
a simple background subtraction on the Jackson cosO and $ angular
DISTRIBUTION QR THS DOCUMENT IS UNLIMITED
* Work performed under the auspices of the U.S. Atomic Energy
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Eisner, R.L. Review of strange mesons, article, January 1, 1974; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1021429/m1/1/: accessed April 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.