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Dive into the research topics where A.Yu. Semenov is active.

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Featured researches published by A.Yu. Semenov.


European Physical Journal C | 2003

Measurement of the neutron electric form factor via recoil polarimetry

T. Reichelt; X. Zhu; R. Asaturian; H. Breuer; P. E. Ulmer; John C. Mitchell; E. Christy; D. Day; W. Vulcan; C. Keppel; H. Arenhövel; S. Wells; V. Punjabi; L. Gan; S. Taylor; S. Tajima; S. Danagulian; R. Ent; W. Kim; M. Elaasar; J. Roche; C. Yan; J. J. Kelly; P. Markowitz; M. Khandaker; B. A. Raue; E. Crouse; S. Churchwell; L. Cole; B. D. Anderson

Abstract.The ratio Gen/Gmn of the electric to the magnetic form factor of the neutron has been measured by analyzing the polarization of the recoiling neutron in quasi-elastic scattering of longitudinally polarized electrons from deuterium at the Q2 values of 0.45, 1.15, and 1.47 (GeV/c)2. The experiment has been performed in Hall C of the Thomas Jefferson National Accelerator Facility. With Gmn being known Gen can be deduced. The preliminary results show that the lowest Q2 points follow the Galster parametrization and that the 1.47 (GeV/c)2 point rises above this parametrization.


SPIN 2002: 15th International Spin Physics Symposium and Workshop on Polarized Electron Sources and Polarimeters | 2003

The Electric Form Factor of the Neutron via Recoil Polarimetry to Q2 = 1.47 (GeV/c)2

B. Plaster; R. Madey; A.Yu. Semenov; S. Taylor; A. Aghalaryan; E. Crouse; G. MacLachlan; S. Tajima; W. Tireman; Chenyu Yan; A. Ahmidouch; B. D. Anderson; H. Arenhövel; R. Asaturyan; Oliver Keith Baker; A.R. Baldwin; H. Breuer; R. Carlini; E. Christy; S. Churchwell; L. Cole; S. Danagoulian; D. Day; M. Elaasar; R. Ent; M. Farkhondeh; H. Fenker; J. M. Finn; L. Gan; K. Garrow

The Jefferson Laboratory E93‐038 collaboration conducted measurements of the ratio of the electric form factor to the magnetic form factor of the neutron, GEn/GMn, via recoil polarimetry from the quasielastic 2H(e,e′n)1H reaction at three values of Q2 [viz., 0.45, 1.15, and 1.47 (GeV/c)2] in Hall C of the Thomas Jefferson National Accelerator Facility. The preliminary results for GEn at Q2 = 0.45 and 1.15 (GeV/c)2 are consistent with the Galster parameterization; however, the preliminary result for GEn at Q2 = 1.47 (GeV/c)2 lies slightly above the Galster parameterization.


Nuclear Physics | 2006

The ratio of proton electromagnetic form factors via recoil polarimetry at Q2=1.13(GeV/c)2

G. MacLachlan; A. Aghalaryan; A. Ahmidouch; B. D. Anderson; R. Asaturyan; Oliver Keith Baker; A.R. Baldwin; D. Barkhuff; H. Breuer; R. Carlini; E. Christy; S. Churchwell; L. Cole; E. Crouse; S. Danagoulian; D. Day; T. Eden; M. Elaasar; R. Ent; M. Farkhondeh; H. Fenker; J. M. Finn; L. Gan; K. Garrow; P. Gueye; C.R. Howell; B. Hu; M. K. Jones; J. J. Kelly; Cynthia Keppel


Physical Review C | 2005

Measurements of the neutron electric to magnetic form-factor ratio G(En) / G(Mn) via the H-2(polarized-e, e-prime,polarized-n)H-1 reaction to Q**2 = 1.45-(GeV/c)**2

B. Plaster; P. E. Ulmer; X. Zhu; H. Breuer; C.R. Howell; H. Mkrtchyan; T. Eden; E. Christy; D. Day; W. Vulcan; C. Keppel; M. Farkhondeh; A. Gasparian; S. Wells; V. Tadevosyan; V. Punjabi; L. Gan; S. Taylor; S. Tajima; A.R. Baldwin; R. Ent; M. Elaasar; J. Roche; N. Savvinov; W. Kim; J. J. Kelly; P. Markowitz; M. Khandaker; B. A. Raue; E. Crouse


Physical Review C | 2006

Measurements of the neutron electric to magnetic form factor ratio GEn/GMn via the 2H(e, e'n)1h reaction to Q2 = 1.45 (GeV/c)2

B. Plaster; A.Yu. Semenov; A. Aghalaryan; E. Crouse; G. MacLachlan; S. Tajima; W. Tireman; A. Ahmidouch; B. D. Anderson; H. Arenhövel; R. Asaturyan; Oliver Keith Baker; A.R. Baldwin; D. Barkhuff; H. Breuer; R. Carlini; E. Christy; S. Churchwell; L. Cole; S. Danagoulian; D. Day; T. Eden; M. Elaasar; R. Ent; M. Farkhondeh; H. Fenker; John M. Finn; L. Gan; A. Gasparian; K. Garrow


European Physical Journal A | 2003

Neutron electric form factor up to Q2 = 1.47 GeV/c2

R. Madey; A.Yu. Semenov; S. Taylor; A. Aghalaryan; E. Crouse; G. MacLachlan; B. Plaster; S. Tajima; W. Tireman; C. Yan; A. Ahmidouch; B. D. Anderson; H. Arenhövel; R. Asaturyan; Oliver Keith Baker; Alan Baldwin; H. Breuer; R. Carlini; E. Christy; S. Churchwell; L. Cole; S. Danagoulian; D. Day; M. Elaasar; R. Ent; M. Farkhondeh; H. Fenker; J.M. Finn; L. Gan; K. Garrow


Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 2006

Calibration of a neutron polarimeter in the 0.2-1.1 GeV region

A.Yu. Semenov; W. M. Zhang; R. Madey; Abdellah Ahmidouch; B. D. Anderson; K. Assamagan; S. Avery; A.R. Baldwin; A.S. Crowell; T. Eden; D. M. Manley; P. Markowitz; G. Milleret; D. L. Prout; T. Reichelt; I. A. Semenova; P. E. Ulmer; E. Voutier; J. W. Watson; S.P. Wells


Physical Review Letters | 2003

Measurements ofGEn/GMnfrom theH2(e→,e′n→)H1Reaction toQ2=1.45(GeV/c)2

R. Madey; A.Yu. Semenov; S. Taylor; B. Plaster; A. Aghalaryan; E. Crouse; G. MacLachlan; S. Tajima; W. Tireman; C. Yan; A. Ahmidouch; B. D. Anderson; H. Arenhövel; R. Asaturyan; Oliver Keith Baker; A.R. Baldwin; D. Barkhuff; H. Breuer; R. Carlini; E. Christy; S. Churchwell; L. Cole; S. Danagoulian; D. Day; T. Eden; M. Elaasar; R. Ent; M. Farkhondeh; H. Fenker; John M. Finn


Physical Review C | 2006

Measurements of the neutron electric to magnetic form factor ratio G{sub En}/G{sub Mn} via the {sup 2}H(e{yields},e{sup '}n{yields}){sup 1}H reaction to Q{sup 2}=1.45 (GeV/c){sup 2}

A.Yu. Semenov; A. Aghalaryan; R. Asaturyan; H. Mkrtchyan; S. Stepanyan; V. Tadevosyan; E. Crouse; John M. Finn; Charles F. Perdrisat; J. Roche; G. MacLachlan; Allena K. Opper; Shigeyuki Tajima; Steve Churchwell; C.R. Howell; Abdellah Ahmidouch; B. D. Anderson


Prepared for | 2003

Neutron electric form factor up to Q**2 = 1.47-(GeV/c)**2

R. Madey; X. Zhu; R. Asaturian; H. Breuer; P. E. Ulmer; J. T. Mitchell; E. Christy; D. Day; W. Vulcan; C. Keppel; H. Arenhövel; S. Wells; V. Punjabi; L. Gan; S. Taylor; S. Tajima; S. Danagulian; R. Ent; W. Kim; M. Elaasar; J. Roche; C. Yan; J. J. Kelly; P. Markowitz; M. Khandaker; M. Farkhondeh; B. A. Raue; E. Crouse; S. Churchwell; L. Cole

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D. Day

University of Virginia

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R. Ent

Thomas Jefferson National Accelerator Facility

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M. Farkhondeh

Massachusetts Institute of Technology

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S. Churchwell

University of Medicine and Dentistry of New Jersey

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