Photodisintegration of Light Nuclei with CLAS. PDF Download
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Languages : en
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We report preliminary results of photodisintegration of deuteron and 3He measured with CLAS at Jefferson Lab. We have extracted the beam-spin asymmetry for the {vector [gamma]}d → pn reaction at photon energies from 1.1 GeV to 2.3 GeV and proton center-of-mass (c.m.) angles between 35° and 135° . Our data show interesting evolution of the angular dependence of the observable as the photon energy increases. The energy dependence of the beam-spin asymmetry at 90 shows a change of slope at photon energy of 1.6 GeV. A comparison of our data with model calculations suggests that a fully non-perturbative treatment of the underlying dynamics may be able to describe the data better than a model based on hard scattering. We have observed onset of dimensional scaling in the cross section of two-body photodisintegration of 3He at remarkably low energy and momentum transfer, which suggests that partonic degrees of freedom may be relevant for the description of nuclei at energies lower than previously considered.
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Languages : en
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We report preliminary results of photodisintegration of deuteron and 3He measured with CLAS at Jefferson Lab. We have extracted the beam-spin asymmetry for the {vector [gamma]}d → pn reaction at photon energies from 1.1 GeV to 2.3 GeV and proton center-of-mass (c.m.) angles between 35° and 135° . Our data show interesting evolution of the angular dependence of the observable as the photon energy increases. The energy dependence of the beam-spin asymmetry at 90 shows a change of slope at photon energy of 1.6 GeV. A comparison of our data with model calculations suggests that a fully non-perturbative treatment of the underlying dynamics may be able to describe the data better than a model based on hard scattering. We have observed onset of dimensional scaling in the cross section of two-body photodisintegration of 3He at remarkably low energy and momentum transfer, which suggests that partonic degrees of freedom may be relevant for the description of nuclei at energies lower than previously considered.
Author: Joseph Shapiro
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Languages : en
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Author: Douglas R. O. Morrison
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Category :
Languages : en
Pages : 0
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Author: Viktor Semenovich Vasilevskiĭ
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Category : Mathematical physics
Languages : en
Pages : 13
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Author: David C. Menzies
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Category :
Languages : en
Pages : 0
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Author: Raymond D. Cooper
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Category : Nuclear physics
Languages : en
Pages : 28
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Author: Joseph S. Levinger
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Category : Photonuclear reactions
Languages : en
Pages : 162
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Author: D. V. Skobel tsyn
Publisher: Springer
ISBN: 148992714X
Category : Science
Languages : en
Pages : 196
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Author: J. Adam
Publisher: Springer Science & Business Media
ISBN: 3709194539
Category : Science
Languages : en
Pages : 539
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The International Conference Mesons and Light Nuclei, organized by the Institute of Nuclear Physics (INP), Rez, was held during July 2 - 7, 1995 in small north Bohemian town Straz pod Ralskem. It was the sixth in a series of meetings which took place previously at Liblice 74 and 81, Bechyne 85 and 88, and Prague 91. The conferences gained already their firm position among intermediate energy nuclear physics activities. International nuclear physics community strongly supported our intention to continue the series. This year's venue for the conference was the accommodation and social area of the DIAMO company at Straz. The goal of the meeting was to summarize the present situation and the future perspectives concerning the experimental investigations and theoreti cal descriptions of light nuclei and their interactions with electromagnetic and hadronic probes, mainly at intermediate energies. The scientific program of the conference included the following areas of research: nuclear physics with pions and antiprotons, T)-meson physics, baryonic systems with strangeness, relativis tic few-body dynamics, and electroweak nuclear interaction. Representatives from many international groups working within different experimental facili ties and with different theoretical methods were invited and asked to present their latest results and future research programs. The Straz conference, attended by 102 physicist from institutions in 22 countries, was sponsored by the Austrian Ministry for Science and Research, Czech Ministry for Industry and Trade, and by SKODA PRAHA a.s. Thanks to this sponsorship we could also invite several participants and students at essentially reduced cost.
Author: Mohammed G. Mustafa
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Languages : en
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