Publications
Publication Information
| Title | A study of 3-pi production in gamma-p -> n-pi+pi+pi- and gamma-p -> Delta++pi+pi-pi- with CLAS at Jefferson Lab ->n |
| Authors | Aristeidis Tsaris |
| JLAB number | JLAB-PHY-16-2443 |
| LANL number | (None) |
| Other number | DOE/OR/23177-4115 |
| Document Type(s) | (Thesis) |
| Associated with EIC: | No |
| Supported by Jefferson Lab LDRD Funding: | No |
| Funding Source: | Nuclear Physics (NP) |
|
Thesis A PHD thesis Advisor(s) : Dennis Weygand (Florida State University) | |
| Publication Abstract: | Apart from the mesons that the constituent quark model predicts, QCD allows for additional states beyond the qq system. Previous experiments have performed partial wave analysis on pion-production data and claim observation of an exotic JPC = 1-+ state decaying via p-pi. The g12 experiment took place at Jefferson Lab using the CLAS spectrometer, a liquid hydrogen target was used and a tagged photon beam. By studying the reactions gamma-p -> n-pi+pi+pi- and gamma-p -> Delta++pi+pi-pi-, the photoproduction of mesons decaying to 3-pi was studied using two different but complimentary channels. Events are selected with low four-momentum transfer to the baryon, in order to enhance one pion exchange production. For both 3-pi systems the data exhibit two intermediate decays, p-pi and f2pi. For the gamma-p -> n-pi+pi+pi- reaction over 600k events were acquired resulting in the largest 3 photoproduction dataset to date. The exotic JPC = 1-+ partial wave does not show resonant behavior and more |
| Experiment Numbers: | E04-005, E04-017 |
| Group: | Hall B |
| Document: | |
| DOI: | |
| Accepted Manuscript: | |
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