Abstract/Details

Search for new mesons in the omega-eta and omega-pion('0) systems produced in the reaction pion('-)proton going to pion('+)pion('-4)photon-neutron at 18 GeV/c


1998 1998

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Abstract (summary)

Results are presented on a study of resonant structure in the $\omega\pi\sp0$ and $\omega\eta$ final states produced in $\pi\sp-p$ interactions at 18 GeV/c where $\omega\to \pi\sp+\pi\sp-\pi\sp0,\ \pi\sp0\to 2\gamma,$ and $\eta\to 2\gamma.$ Final states such as $\omega\pi\sp0$ and $\omega\eta,$ which contain a vector meson are allowed in the extended flux-tube model for the decay of hybrid mesons. For the $\omega\eta$ final state, the data exhibit the well-known $b\sb1$(1235) and $\rho\sb3$(1690) resonances. A one-pion exchange mechanism is clearly seen for the $\rho\sb3$(1690). The result of a partial wave analysis for the $\omega\eta$ final state finds a new $1\sp{+-}$ meson state $h\sb1$(1540) with a mass $M = 1542\pm 13$ MeV and a width $\Gamma = 285\pm 30$ MeV, which shows phase motion relative to the $\omega$(1600). The decay mode of $\omega(1600)\to \omega\eta$ has not been previously reported.

Indexing (details)


Subject
Particle physics;
Nuclear physics
Classification
0798: Particle physics
0610: Nuclear physics
Identifier / keyword
Pure sciences, Eta meson, Mesons, Omega meson, Pion
Title
Search for new mesons in the omega-eta and omega-pion('0) systems produced in the reaction pion('-)proton going to pion('+)pion('-4)photon-neutron at 18 GeV/c
Author
Eugenio, Paul Michael
Number of pages
172
Publication year
1998
Degree date
1998
School code
0118
Source
DAI-B 59/07, Dissertation Abstracts International
Place of publication
Ann Arbor
Country of publication
United States
ISBN
9780591960808, 059196080X
Advisor
Dowd, John
University/institution
University of Massachusetts Amherst
University location
United States -- Massachusetts
Degree
Ph.D.
Source type
Dissertations & Theses
Language
English
Document type
Dissertation/Thesis
Dissertation/thesis number
9841866
ProQuest document ID
304437286
Copyright
Database copyright ProQuest LLC; ProQuest does not claim copyright in the individual underlying works.
Document URL
http://search.proquest.com/docview/304437286
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