Download or read book Neutral Pion Electroproduction in the Delta Resonance Region written by Anthony Nicholas Villano and published by ProQuest. This book was released on 2007 with total page 496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutral Pion Electroproduction in the Resonance Region at High Q 2 written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The process $ep \to e^{\prime}p^{\prime}\pi^0$ has been measured at $Q^2$ = 6.4 and 7.7 \ufourmomts in Jefferson Lab's Hall C. Unpolarized differential cross sections are reported in the virtual photon-proton center of mass frame considering the process $\gamma^{\ast}p \to p^{\prime}\pi^0$. Various details relating to the background subtractions, radiative corrections and systematic errors are discussed. The usefulness of the data with regard to the measurement of the electromagnetic properties of the well known $\Delta(1232)$ resonance is covered in detail. Specifically considered are the electromagnetic and scalar-magnetic ratios $R_{EM}$ and $R_{SM}$ along with the magnetic transition form factor $G_M^{\ast}$. It is found that the rapid fall off of the $\Delta(1232)$ contribution continues into this region of momentum transfer and that other resonances.
Download or read book Neutral Pion Electroproduction in the Resonance Region written by and published by . This book was released on 2007 with total page 269 pages. Available in PDF, EPUB and Kindle. Book excerpt: The electroproduction of baryon resonances at high Q2 is examined. Analysis focuses on the ?(1232) resonance via exclusive pseudoscalar meson production of ?0 particles. Differential cross sections are extracted for exclusive ?0 electroproduction. In the central invariant mass (W) region the cross sections are used to extract resonant multipole amplitudes. In particular, the ratio of the electric quadrupole to magnetic dipole amplitudes (E2/M1) will be discussed for the ?(1232) resonance. The transition to pQCD is discussed in terms of E2/M1 and other multipoles. The helicity amplitude A3/2 can be used as a baryon helicity conservation meter in this context and will be discussed. The fast shrinking of the resonant contribution in the ? region is observed at this high momentum transfer. Apart from the observables related to pQCD scaling, the transition form factor G$*\atop{M}$ is extracted along with the scalar to magnetic dipole ratio C2/M1.
Download or read book Electroproduction of Neutral Pions in the Resonance Region written by and published by . This book was released on 1975 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Neutral Pion Electroproduction in the Delta Resonance Region written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The electroproduction of baryon resonances at high Q2 is examined. Analysis focuses on the Delta(1232) resonance via exclusive pseudoscalar meson production of À0 particles. Differential cross sections are extracted for exclusive À0 electroproduction. In the central invariant mass (W) region the cross sections are used to extract resonant multipole amplitudes. In particular, the ratio of the electric quadrupole to magnetic dipole amplitudes (E2/M1) will be discussed for the Delta(1232) resonance. The transition to pQCD is discussed in terms of E2/M1 and other multipoles. The helicity amplitude A3/2 can be used as a baryon helicity conservation meter in this context and will be discussed. The fast shrinking of the resonant contribution in the Delta region is observed at this high momentum transfer. Apart from the observables related to pQCD scaling, the transition form factor GM is extracted along with the scalar to magnetic dipole ratio C2/M1.
Download or read book Electroproduction of Neutral Pions at Energies Above the Resonance Region written by and published by . This book was released on 1975 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region Up to the Deep Inelastic Region at Backward Angles written by and published by . This book was released on 2009 with total page 15201 pages. Available in PDF, EPUB and Kindle. Book excerpt: We have made the first measurements of the virtual Compton scattering (VCS) process via the H(e, e'p)? exclusive reaction in the nucleon resonance region, at backward angles. Results are presented for the W-dependence at fixed Q2=1 GeV2, and for the Q2-dependence at fixed W near 1.5 GeV. The VCS data show resonant structures in the first and second resonance regions. The observed Q2-dependence is smooth. The measured ratio of H(e, e'p)? to H(e, e'p)?0 cross sections emphasizes the different sensitivity of these two reactions to the various nucleon resonances. Finally, when compared to Real Compton Scattering (RCS) at high energy and large angles, our VCS data at the highest W (1.8-1.9 GeV) show a striking Q2-independence, which may suggest a transition to a perturbative scattering mechanism at the quark level.
Download or read book Virtual Compton Scattering and Neutral Pion Electro production from the Proton in the Nucleon Resonance Region written by Luminita Todor and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment (E93-050) at Jefferson Lab measured the ep {yields} ep{gamma} and ep {yields} ep{pi}{sup 0} cross sections in the nucleon resonance region, from the threshold to W = 1.9 GeV at Q{sup 2} = 1 GeV{sup 2} for backward emission of the {gamma} or {pi}{sup 0}.
Download or read book Virtual Compton Scattering and Neutral Pion Electro production from the Proton in the Nucleon Resonance Region written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The experiment (E93-050) at Jefferson Lab measured the ep [yields] ep[gamma] and ep [yields] ep[pi][sup 0] cross sections in the nucleon resonance region, from the threshold to W = 1.9 GeV at Q[sup 2] = 1 GeV[sup 2] for backward emission of the [gamma] or [pi][sup 0].
Download or read book Electroproduction of Positive and Neutral Pions from Hydrogen in the Second Resonance Region written by A J. Latham and published by . This book was released on 1978 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroproduction of Neutral Pions in the Region of the First Nucleon Resonance written by R. Siddle and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Pion Electroproduction in the Triangle sup 3 3 Resonance Region written by Serdar Nergiz and published by . This book was released on 1985 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Electroproduction of Pions Beyond the Resonance Region and the Pion Form Factor written by W. Schmidt and published by . This book was released on 1971 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Songes d un hermite written by and published by . This book was released on 1788 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Single Pion Electroproduction in Delta 1232 and Roper Resonance Region with CLAS written by Kyungseon Joo and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Single pion electroproduction in the resonance region has been studied as a means of exploring the physics underlying the structure of the nucleon. Recent experiments using CLAS at Jefferson Lab/Hall B have measured unpolarized cross sections and beam spin asymmetries over a large kinematic range. The high statistical accuracy of this data set provides important information on the Delta(1232) and the Roper.
Download or read book Dispersion Relation Calculation of Neutral Meson Electroproduction in the Resonance Region written by Robin C. Devenish and published by . This book was released on 1971 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1976 with total page 680 pages. Available in PDF, EPUB and Kindle. Book excerpt:
