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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Preliminary results are presented on the scattering asymmetries of pions, kaons, and protons produced inclusively from a 16.5 GeV/c polarized proton beam incident on an unpolarized hydrogen target. The data are for transverse momenta between 1.0 and 2.7 GeV/c and X/sub F/ near zero. 8 references.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Preliminary results are presented on the scattering asymmetries of pions, kaons, and protons produced inclusively from a 16.5 GeV/c polarized proton beam incident on an unpolarized hydrogen target. The data are for transverse momenta between 1.0 and 2.7 GeV/c and X/sub F/ near zero. 8 references.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Preliminary results from Experiment E925 on inclusive pion asymmetries from a 22 GeV/c polarized proton beam on a carbon target show significant asymmetries for[pi][sup[+-]] production similar to those observed earlier at the ZGS and Fermilab with beams of 12 and 200 GeV respectively. This experiment demonstrates the viability of using the analyzing power in inclusive pion production for high energy beam polarimetry at RHIC. Inclusive proton asymmetries are consistent with zero.
Author: Publisher: ISBN: Category : Languages : en Pages : 171
Book Description
What constitutes the spin of the nucleon? The answer to this question is still not completely understood. Although we know the longitudinal quark spin content very well, the data on the transverse quark spin content of the nucleon is still very sparse. Semi-inclusive Deep Inelastic Scattering (SIDIS) using transversely polarized targets provide crucial information on this aspect. The data that is currently available was taken with proton and deuteron targets. The E06-010 experiment was performed at Jefferson Lab in Hall-A to measure the single spin asymmetries in the SIDIS reaction n↑(e, e'?±/K±)X using transversely polarized 3He target. The experiment used the continuous electron beam provided by the CEBAF accelerator with a beam energy of 5.9 GeV. Hadrons were detected in a high-resolution spectrometer in coincidence with the scattered electrons detected by the BigBite spectrometer. The kinematic coverage focuses on the valence quark region, x = 0.19 to 0.34, at Q2 = 1.77 to 2.73 (GeV/c)2. This is the first measurement on a neutron target. The data from this experiment, when combined with the world data on the proton and the deuteron, will provide constraints on the transversity and Sivers distribution functions on both the u and d-quarks in the valence region. In this work we report on the single spin asymmetries in the SIDIS n↑(e, e'?+)X reaction.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
What constitutes the spin of the nucleon? The answer to this question is still not completely understood. Although we know the longitudinal quark spin content very well, the data on the transverse quark spin content of the nucleon is still very sparse. Semi-inclusive Deep Inelastic Scattering (SIDIS) using transversely polarized targets provide crucial information on this aspect. The data that is currently available was taken with proton and deuteron targets. The E06-010 experiment was performed at Jefferson Lab in Hall-A to measure the single spin asymmetries in the SIDIS reaction n1!e, e'[pi]{sup ±}/K{sup ±})X using transversely polarized 3He target. The experiment used the continuous electron beam provided by the CEBAF accelerator with a beam energy of 5.9 GeV. Hadrons were detected in a high-resolution spectrometer in coincidence with the scattered electrons detected by the BigBite spectrometer. The kinematic coverage focuses on the valence quark region, x = 0.19 to 0.34, at Q2 = 1.77 to 2.73 (GeV/c)2. This is the first measurement on a neutron target. The data from this experiment, when combined with the world data on the proton and the deuteron, will provide constraints on the transversity and Sivers distribution functions on both the u and d-quarks in the valence region. In this work we report on the single spin asymmetries in the SIDIS n1!e, e'[pi])X reaction.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The single spin beam asymmetry, ALTÃ?Â?Ã?Â?Ã?Â?Ã?Â[cent]Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â2, and the polarized structure function, Ã?Â?Ã?Â?Ã?Â?Ã?Â[8F]Ã?Â?Ã?Â?Ã?Â?Ã?Â?LTÃ?Â?Ã?Â?Ã?Â?Ã?Â[cent]Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â?Ã?Â2, for the reaction in the resonance region have been measured and extracted using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Data were taken at an electron beam energy of 2.57 GeV. The large acceptance of CLAS allows for full azimuthal angle coverage over a large range of kaon center-of-mass angles. Preliminary results are presented that span a range in Q2 from 0.4 to 1.4 (GeV)2 and in W from threshold up to 2.1 GeV. Comparison to existing theoretical calculations are also presented. The fifth structure function is sensitive to the interferences between resonant and non-resonant amplitudes. This measurement is part of a larger CLAS program to measure cross sections and polarization observables for kaon electroproduction in the nucleon resonance region.
Author: B. A. Raue Publisher: ISBN: Category : Languages : en Pages :
Book Description
The single spin beam asymmetry, A{sub LT'}, and the polarized structure function, {sigma}{sub LT'}, for the p({rvec e}, e'K{sup +}){Lambda} reaction in the resonance region have been measured and extracted using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. Data were taken at an electron beam energy of 2.57 GeV. The large acceptance of CLAS allows for full azimuthal angle coverage over a large range of kaon center-of-mass angles. Preliminary results are presented that span a range in Q{sup 2} from 0.4 to 1.4 (GeV){sup 2} and in W from threshold up to 2.1 GeV. Comparison to existing theoretical calculations are also presented. The fifth structure function is sensitive to the interferences between resonant and non-resonant amplitudes. This measurement is part of a larger CLAS program to measure cross sections and polarization observables for kaon electroproduction in the nucleon resonance region.
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Author: Stephen Zachary Saroff
Author: ![Asymmetry in Inclusive[pi][sup[+-], P Production at 22 GeV, BNL E925 PDF](https://books.google.com/books/content/images/frontcover/c2-oDAEACAAJ?fife=w80-h100)
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Author: B. A. Raue
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