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Photoproduction Of Charged Pion Pairs Froms Hydrogen At Photon Energies Between 800 And 1500 Mev
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Book Synopsis Photoproduction of Charged Pion Pairs Froms Hydrogen at Photon Energies Between 800 and 1500 MeV. by : Wesley Loren Shanks
Download or read book Photoproduction of Charged Pion Pairs Froms Hydrogen at Photon Energies Between 800 and 1500 MeV. written by Wesley Loren Shanks and published by . This book was released on 1968 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Charged Pion Pairs from Hydrogen at Energies Up to 1500 MeV. by : Lyman Jefferson Fretwell
Download or read book Photoproduction of Charged Pion Pairs from Hydrogen at Energies Up to 1500 MeV. written by Lyman Jefferson Fretwell and published by . This book was released on 1967 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Photoproduction of Pion Pairs from Hydrogen by : Martin Feldman
Download or read book The Photoproduction of Pion Pairs from Hydrogen written by Martin Feldman and published by . This book was released on 1962 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Pion Pairs in Hydrogen by : Richard Morris Friedman
Download or read book Photoproduction of Pion Pairs in Hydrogen written by Richard Morris Friedman and published by . This book was released on 1956 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1969 with total page 1502 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Positive Pion Photoproduction from Hydrogen at Photon Energies Between 500 MeV and 1400 MeV in Forward Direction by : Karl H. Althoff
Download or read book Positive Pion Photoproduction from Hydrogen at Photon Energies Between 500 MeV and 1400 MeV in Forward Direction written by Karl H. Althoff and published by . This book was released on 1983 with total page 8 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 1973 with total page 1412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Positive pion photoproduction from hydrogen at photon energies between 500 MeV and 1400 MeV in forward direction by :
Download or read book Positive pion photoproduction from hydrogen at photon energies between 500 MeV and 1400 MeV in forward direction written by and published by . This book was released on 1983 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Photoproduction of Single Neutral Pions from Hydrogen in the Range 900 Mev to 1200 Mev by : Harold Edward Jackson
Download or read book The Photoproduction of Single Neutral Pions from Hydrogen in the Range 900 Mev to 1200 Mev written by Harold Edward Jackson and published by . This book was released on 1960 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Positive Pion Photoproduction from Hydrogen for Incident Photon Energies 300-750 Mev by : C. Betourne
Download or read book Positive Pion Photoproduction from Hydrogen for Incident Photon Energies 300-750 Mev written by C. Betourne and published by . This book was released on 1968 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Charged Pion Pairs in Hydrogen by : John Michael Sellen
Download or read book Photoproduction of Charged Pion Pairs in Hydrogen written by John Michael Sellen and published by . This book was released on 1959 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charged Pion Photoproduction from Deuterium for Photon Energies of 500 to 1000 Mev by : Walter D. Wales
Download or read book Charged Pion Photoproduction from Deuterium for Photon Energies of 500 to 1000 Mev written by Walter D. Wales and published by . This book was released on 1960 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Charged Pion Photoproduction from Hydrogen and Deuterium at Jefferson Lab by :
Download or read book Charged Pion Photoproduction from Hydrogen and Deuterium at Jefferson Lab written by and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The [gamma]n [yields] [pi][sup -]p and [gamma]p [yields] [pi][sup +]n reactions are essential probes of the transition from meson-nucleon degrees of freedom to quark-gluon degrees of freedom in exclusive processes. The cross sections of these processes are also, advantageous, for the investigation of oscillatory behavior around the quark counting prediction, since they decrease relatively slower with energy compared with other photon-induced processes. Moreover, these photoreactions in nuclei can probe the QCD nuclear filtering and color transparency effects. In this talk, I discuss the preliminary results on the [gamma]p [yields] [pi][sup +]n and [gamma]n [yields] [pi][sup -]p processes at a center-of-mass angle of 90[sup o] from Jefferson Lab experiment E94-104. I also discuss a new experiment in which singles [gamma]p [yields] [pi][sup +]n measurement from hydrogen, and coincidence [gamma]n [yields] [pi][sup -]p measurements at the quasifree kinematics from deuterium and [sup 12]C for photon energies between 2.25 GeV to 5.8 GeV in fine steps at a center-of-mass angle of 90[sup o] are planned. The proposed measurement will allow a detailed investigation of the oscillatory scaling behavior in photopion production processes and the study of the nuclear dependence of rather mysterious oscillations with energy that previous experiments have indicated. The various nuclear and perturbative QCD approaches, ranging from Glauber theory, to quark-counting, to Sudakov-corrected independent scattering, make dramatically different predictions for the experimental outcomes.
Book Synopsis Charged Pion Photoproduction from Hydrogen and Deuterium at Jefferson Lab by : Haiyan Gao
Download or read book Charged Pion Photoproduction from Hydrogen and Deuterium at Jefferson Lab written by Haiyan Gao and published by . This book was released on 2003 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The {gamma}n {yields} {pi}{sup -}p and {gamma}p {yields} {pi}{sup +}n reactions are essential probes of the transition from meson-nucleon degrees of freedom to quark-gluon degrees of freedom in exclusive processes. The cross sections of these processes are also, advantageous, for the investigation of oscillatory behavior around the quark counting prediction, since they decrease relatively slower with energy compared with other photon-induced processes. Moreover, these photoreactions in nuclei can probe the QCD nuclear filtering and color transparency effects. In this talk, I discuss the preliminary results on the {gamma}p {yields} {pi}{sup +}n and {gamma}n {yields} {pi}{sup -}p processes at a center-of-mass angle of 90{sup o} from Jefferson Lab experiment E94-104. I also discuss a new experiment in which singles {gamma}p {yields} {pi}{sup +}n measurement from hydrogen, and coincidence {gamma}n {yields} {pi}{sup -}p measurements at the quasifree kinematics from deuterium and {sup 12}C for photon energies between 2.25 GeV to 5.8 GeV in fine steps at a center-of-mass angle of 90{sup o} are planned. The proposed measurement will allow a detailed investigation of the oscillatory scaling behavior in photopion production processes and the study of the nuclear dependence of rather mysterious oscillations with energy that previous experiments have indicated. The various nuclear and perturbative QCD approaches, ranging from Glauber theory, to quark-counting, to Sudakov-corrected independent scattering, make dramatically different predictions for the experimental outcomes.
Book Synopsis Photoproduction of positive pions on hydrogen at photon energies between 220 and 425 MeV by : G. Fischer
Download or read book Photoproduction of positive pions on hydrogen at photon energies between 220 and 425 MeV written by G. Fischer and published by . This book was released on 1970 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Photoproduction of Single Positive Pions from Hydrogen in the Region 400 to 1100 Mev by : Frank Turkot
Download or read book Photoproduction of Single Positive Pions from Hydrogen in the Region 400 to 1100 Mev written by Frank Turkot and published by . This book was released on 1959 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Exclusive Photoproduction of Charged Pions in Hydrogen and Deuterium from 1 to 6 GeV. by :
Download or read book Exclusive Photoproduction of Charged Pions in Hydrogen and Deuterium from 1 to 6 GeV. written by and published by . This book was released on 2004 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of the transition region in the description of exclusive processes and hadron structure, from the nucleon-meson degrees of freedom in meson-exchange models at low energy to the quark-gluon degrees of freedom in pQCD at high energy, is essential for us to understand the strong interaction. The differential cross section measurements for exclusive reactions at fixed center-of-mass angles enable us to investigate the constituent counting rule, which explicitly connects the quark-gluon degrees of freedom to the energy dependence of differential cross sections. JLab Experiment E94-104 was carried out in Hall A with two high resolution spectrometers. It included the coincidence cross section measurement for the ?n --> ?-[p] process with a deuterium target and the singles measurement for the ?p --> ?+[n] process with a hydrogen target. The untagged real photons were generated by the electron beam impinging on a copper radiator. The photon energies ranged from 1.1 to 5.5 GeV, corresponding to the center-of-mass energies from 1.7 to 3.4 GeV. The pion center-of-mass angles were fixed at 50 deg, 70 deg, 90 deg, and also 100 deg, 110 deg at a few energies. The JLab E94-104 data presented in this thesis contain four interesting features. The data exhibit a global scaling behavior for both ?- and ?+ photoproduction at high energies and high transverse momenta, consistent with the constituent counting rule and the existing ?+ photoproduction data. This implies that the quark-gluon degrees of freedom start to play a role at this energy scale. The data suggests possible substructure of the scaling behavior, which might be oscillations around the scaling value. There are several possible mechanisms that can cause oscillations, for example the one associated with the generalized constituent counting rule involving quark orbital angular momentum. The data show an enhancement in the scaled cross section at center-of-mass energy near 2.2 GeV, where baryon resonances are not as well known as those at low energies. The differential cross section ratios for exclusive ?n --> ?-[p] to ?p --> ?+[n] process at ?cm = 90 deg start to show consistency with the prediction based on one-hard-gluon-exchange diagrams at high energies.
