Measurement Of The Target Normal Single Spin Asymmetry In Quasielastic Scattering From The Reaction He3 U2191 E E
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Measurement Of The Target Normal Single Spin Asymmetry In Quasielastic Scattering From The Reaction He3 U2191 E E
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of The Target Normal Single Spin Asymmetry In Quasielastic Scattering From The Reaction He3 U2191 E E written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We report the first measurement of the target single-spin asymmetry, Ay, in quasi-elastic scattering from the inclusive reaction 3He↑ (e,e') on a 3He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero Ay can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q2= 0.13, 0.46 and 0.97 GeV2. These measurements demonstrate, for the first time, that the 3He asymmetry is clearly non-zero and negative with a statistical significance of (8-10)?. Using measured proton-to-3He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q2 is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at Q2=0.97 GeV2 agrees well with a prediction based on two-photon exchange using a GPD model and in addition provides a new independent constraint on these distributions.
Measurement Of The Target Normal Single Spin Asymmetry In Quasielastic Scattering From The Reaction Math Display
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Author :
language : en
Publisher:
Release Date : 2015
Measurement Of The Target Normal Single Spin Asymmetry In Quasielastic Scattering From The Reaction Math Display written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
We report the first measurement of the target single-spin asymmetry, Ay, in quasi-elastic scattering from the inclusive reaction 3He1!(e, e') on a 3He gas target polarized normal to the lepton scattering plane. Assuming time-reversal invariance, this asymmetry is strictly zero for one-photon exchange. A non-zero Ay can arise from the interference between the one- and two-photon exchange processes which is sensitive to the details of the sub-structure of the nucleon. An experiment recently completed at Jefferson Lab yielded asymmetries with high statistical precision at Q2= 0.13, 0.46 and 0.97 GeV2. These measurements demonstrate, for the first time, that the 3He asymmetry is clearly non-zero and negative with a statistical significance of (8-10)[sigma]. Using measured proton-to-3He cross-section ratios and the effective polarization approximation, neutron asymmetries of -(1-3)% were obtained. The neutron asymmetry at high Q2 is related to moments of the Generalized Parton Distributions (GPDs). Our measured neutron asymmetry at Q2=0.97 GeV2 agrees well with a prediction based on two-photon exchange using a GPD model and in addition provides a new independent constraint on these distributions.
Measurement Of The Target Normal Single Spin Asymmetry In Deep Inelastic Scattering From The Reaction 3he Uparrow E E X
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Author :
language : en
Publisher:
Release Date : 2014
Measurement Of The Target Normal Single Spin Asymmetry In Deep Inelastic Scattering From The Reaction 3he Uparrow E E X written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
We report the first measurement of the target single-spin asymmetry in deep-inelastic scattering from the inclusive reaction 3He{uparrow}(e, e')X on a 3He gas target polarized normal to the lepton plane. Assuming time-reversal invariance, this asymmetry is strictly zero in the Born approximation. The experiment, conducted at Jefferson Lab using a 5.89 GeV electron beam, covers a range of 1.7W
Measurement Of The Target Normal Single Spin Asymmetry A Superscript N Over Subscript Y In The Deep Inelastic Region From The Reaction 3he Up Arrow E E
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Author : Joseph M. Katich
language : en
Publisher:
Release Date : 2011
Measurement Of The Target Normal Single Spin Asymmetry A Superscript N Over Subscript Y In The Deep Inelastic Region From The Reaction 3he Up Arrow E E written by Joseph M. Katich and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Electrons categories.
Measurement Of The Helicity Dependent Asymmetry In Sup 3 H E E Quasielastic Scattering
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language : en
Publisher:
Release Date : 1995
Measurement Of The Helicity Dependent Asymmetry In Sup 3 H E E Quasielastic Scattering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.
The analysis of the data from the MIT-Bates experiment in June 1993 to measure the helicity-dependent asymmetry in quasielastic scattering of polarized electrons from polarized 3He was completed. The neutron magnetic form factor was extracted from data on polarized 3He for the first time and is found to be in very good agreement with the dipole form at Q2 = 0. 19 (GeV/c)2. A paper reporting the transverse asymmetry and the extracted value of the neutron magnetic form factor was published, and papers reporting the transverse-longitudinal asymmetries at the quasielastic peak and on the low energy-transfer side of the quasielastic peak were submitted for publication.
Single And Double Spin Asymmetries For Deeply Virtual Compton Scattering Measured With Clas And A Longitudinally Polarized Proton Target
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Author :
language : en
Publisher:
Release Date : 2015
Single And Double Spin Asymmetries For Deeply Virtual Compton Scattering Measured With Clas And A Longitudinally Polarized Proton Target written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with categories.
Single-beam, single-target, and double-spin asymmetries for hard exclusive photon production on the proton e→p→e'p'[gamma] are presented. The data were taken at Jefferson Lab using the CLAS detector and a longitudinally polarized 14NH3 target. The three asymmetries were measured in 165 4-dimensional kinematic bins, covering the widest kinematic range ever explored simultaneously for beam and target-polarization observables in the valence quark region. The kinematic dependences of the obtained asymmetries are discussed and compared to the predictions of models of Generalized Parton Distributions. As a result, the measurement of three DVCS spin observables at the same kinematic points allows a quasi-model-independent extraction of the imaginary parts of the H and H~ Compton Form Factors, which give insight into the electric and axial charge distributions of valence quarks in the proton.
Detection Of Azimuthal Asymmetry In Quasi Elastic Double Scattering Experiments
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Author : Robert Evans Donaldson
language : en
Publisher:
Release Date : 1956
Detection Of Azimuthal Asymmetry In Quasi Elastic Double Scattering Experiments written by Robert Evans Donaldson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1956 with Neutrons categories.
Precise Measurement Of The Transverse Asymmetry In Quasielastic Sup 3 He Pol Rvec E E Prime And The Neutron Magnetic Form Factor
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Author :
language : en
Publisher:
Release Date : 2001
Precise Measurement Of The Transverse Asymmetry In Quasielastic Sup 3 He Pol Rvec E E Prime And The Neutron Magnetic Form Factor written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
The authors have measured the transverse asymmetry A[sub T[prime]] in[sup 3]He[pol]([rvec e], e[prime]) quasielastic scattering with high statistical precision for Q[sup 2]-values from 0.1 to 0.6 (GeV/c)[sup 2]. The data are expected to allow extraction of the neutron magnetic form factor G[sup n][sub M]with an uncertainty similar to that of recent experiments on deuterium. Data analysis is currently in progress.
Azimuthal And Single Spin Asymmetry In Deep Inelasticlepton Nucleon Scattering
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Author :
language : en
Publisher:
Release Date : 2006
Azimuthal And Single Spin Asymmetry In Deep Inelasticlepton Nucleon Scattering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
The collinear expansion technique is generalized to thefactorization of unintegrated parton distributions and other higher twistparton correlations from the corresponding collinear hard parts thatinvolve multiple parton final state interaction. Such a generalizedfactorization provides a consistent approach to the calculation ofinclusive and semi-inclusive cross sections of deep-inelasticlepton-nucleon scattering. As an example, the azimuthal asymmetry iscalculated to the order of 1/Q in semi-inclusive deeply inelasticlepton-nucleon scattering with transversely polarized target. Anon-vanishing single-spin asymmetry in the "triggered inclusive process"is predicted to be 1/Q suppressed with a part of the coefficient relatedto a moment of the Sivers function.
Single Spin Asymmetries In Semi Inclusive Deep Inelastic Scattering On A Transversely Polarized Hydrogen Target
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Author :
language : en
Publisher:
Release Date : 2004
Single Spin Asymmetries In Semi Inclusive Deep Inelastic Scattering On A Transversely Polarized Hydrogen Target written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with categories.