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Persistent URL
http://purl.org/net/epubs/work/25549
Record Status
Checked
Record Id
25549
Title
Issues in light hadron spectroscopy
Contributors
D Morgan (SERC Rutherford Appleton Lab.)
Abstract
A high priority in light spectroscopy is to seek out and characterize various types of non-(QQ) meson. The large quantity of new data now appearing will present a great opportunity. To identify the non-(QQ) intruders one needs to know the regular (QQ) pattern well; whole meson families thus become a target for close investigation. A powerful discovery strategy is to observe the same meson in a variety of reactions. Because mesons appear as resonances, other dynamics can distort the signal in a particular decay channel. Unitarity is the master principle for eo- ordinating various sightings of the same resonance. Much of the new spectroscopic information in prospect will come from inferring two-body dynamics from three-body final states. Conventional methods of analysis via the isobar model use approximations to unitarity that need validation. Of all the meson families, the scalars should be a prime hunting ground for non-(QQ)'s. Even before the advent of the new results, some revisions of the 'official' classifications are urged. In particular, it is argued that the lightest broad I=0 scalar is a very broad f0 (1000). One unfinished task is to decide whether f0 (975) and a0 (980) are alike or different; several non-(QQ) scalar scenarios hinge on this. To settle this, much better data on KK channels is needed.
Organisation
SERC
Keywords
Funding Information
Related Research Object(s):
Licence Information:
Language
English (EN)
Type
Details
URI(s)
Local file(s)
Year
Report
C93-09-05.3. 1993.
1993
Report
RAL Technical Reports
RAL-93-078. 1993.
RAL-TR-1993-078.pdf
1993
Presentation
Presented at Hadron Structure 93, Banska Stiavnica, Slovakia, 5-10 Sep 1993.
1993
Journal Article
Nuovo Cim A
107 (1994): 1883-1902.
1994
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