Polarization Observables from two-pion and ρ meson photoproduction on polarized HD target at JLab

Zonta, I.

doi:10.2172/1346543

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…The goal of using a correction to particle momentum is to improve the resolution of the data; for the g14 period this was done using kinematic fitting [76] [100].…”

Section: Kinematic Fittingmentioning

confidence: 99%

First Measurement of the E Double-polarization Observable for the γη to Κ+Σ- with CLAS & a New Forward Tagger Hodoscope for CLAS12

Fleming

2016

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Finally, my darling Alex. I don't quite know how to sum up all that you've done. You've helped me through illness and days where I couldn't get out of bed. You understood when I spent weekends in the office and made me dinner when I got home at 10pm. You understood when I flew to America and Italy on three days notice and met me at the airport when I came home.I could not have done this without you.

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“…The goal of using a correction to particle momentum is to improve the resolution of the data; for the g14 period this was done using kinematic fitting [76] [100].…”

Section: Kinematic Fittingmentioning

confidence: 99%

First Measurement of the E Double-polarization Observable for the γη to Κ+Σ- with CLAS & a New Forward Tagger Hodoscope for CLAS12

Fleming

2016

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“…A small amount of photoproduced double pion experiments were performed in the sixties and the seventies but mainly above the resonant region [47] [48]. Recently, more two pion photoproduction analyses have been undertaken focusing on the resonant region [36][49] [50].…”

Section: Chapter 2 Two Pion Photoproductionmentioning

confidence: 99%

Beam Spin Asymmetry Measurements for Two Pion Photoproduction at CLAS

Anderson¹

2015

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The overarching goal of this analysis, and many like it, is to develop our understanding of the strong force interactions within the nucleon by examining the nature of their excitation spectra. As the resonances of these spectra have very short lifetimes (τ = 1 × 10 −23 s) and often have very similar masses, it is often impossible to directly observe resonances in the excitation spectra of nucleons. Polarization observables allow us to study the resonances by looking at how they affect the spin state of final state particles. The beam asymmetry is a polarization observable that allows us to detect the sensitivity of these resonances, and other transition mechanisms, to the electric vector orientation of incident photons. Presented in this thesis are first measurements of the beam asymmetries in the resonant region for the reaction channel γp → pπ + π − focusing on the intermediate mesonic states ρ 0 and f 0 , and the final state pions. The analysis used data from the g8b experiment undertaken at the Thomas Jeffereson National Accelerator Facility(JLab), the first experiment at JLab to use a linearly polarized photon beam. Using the coherent Bremsstrahlung facility and the CLAS detector of Hall B at JLab allowed for many multi-channel reactions to be detected and the first measurements of many polarization observables including those presented here. A brief overview of the theoretical framework used to undertake this analysis is given, followed by a description of the experimental details of the facilities used, then a description of the calibration of the Bremsstrahlung tagging facility which the author undertook, and finally the analysis is presented and the resulting measurements. i Declaration I declare that I composed this thesis in its entirety and that the work presented was completed by myself, except in the cases where the works of others have been explicitly referenced.

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Polarization Observables from two-pion and ρ meson photoproduction on polarized HD target at JLab

Cited by 2 publications

References 35 publications

First Measurement of the E Double-polarization Observable for the γη to Κ<sup>+</sup>Σ<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12

First Measurement of the E Double-polarization Observable for the γη to Κ<sup>+</sup>Σ<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12

Beam Spin Asymmetry Measurements for Two Pion Photoproduction at CLAS

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Polarization Observables from two-pion and ρ meson photoproduction on polarized HD target at JLab

Cited by 2 publications

References 35 publications

First Measurement of the E Double-polarization Observable for the &gamma;&eta; to &Kappa;<sup>+</sup>&Sigma;<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12

First Measurement of the E Double-polarization Observable for the &gamma;&eta; to &Kappa;<sup>+</sup>&Sigma;<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12

Beam Spin Asymmetry Measurements for Two Pion Photoproduction at CLAS

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First Measurement of the E Double-polarization Observable for the γη to Κ<sup>+</sup>Σ<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12

First Measurement of the E Double-polarization Observable for the γη to Κ<sup>+</sup>Σ<sup>-</sup> with CLAS & a New Forward Tagger Hodoscope for CLAS12