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We determine the nucleon electromagnetic form factors and their uncertainties from world electron scattering data. The analysis incorporates two-photon exchange corrections, constraints on the low-Q2 and high-Q2 behavior, and additional…

Nuclear Experiment · Physics 2017-12-12 Zhihong Ye , John Arrington , Richard J. Hill , Gabriel Lee

The impacts of both exchange interaction and electron correlation, as well as their combined impact, on electron elastic scattering off a semifilled shell Mn(...$3d^{5}$$4s^{2}$, $^{6}S$) atom are theoretically studied in the electron…

Atomic Physics · Physics 2013-08-15 V. K. Dolmatov , M. Ya. Amusia , L. V. Chernysheva

We investigate parity-violating electroweak asymmetries in the elastic scattering of polarized electrons off protons within the framework of the chiral quark-soliton model ($\chi$QSM). We use as input the former results of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Antonio Silva , Hyun-Chul Kim , Diana Urbano , Klaus Goeke

The GEp-III and GEp-2$\gamma$ experiments, carried out in Jefferson Lab's Hall C from 2007-2008, consisted of measurements of polarization transfer in elastic electron-proton scattering at momentum transfers of $Q^2 = 2.5, 5.2, 6.8,$ and…

The E08-027 (g2p) experiment measured the spin structure functions of the proton at Jefferson Laboratory in Newport News, Va. Longitudinally polarized electrons were scattered from a transversely and longitudinally polarized solid ammonia…

Nuclear Experiment · Physics 2017-08-29 Ryan Zielinski

A critical review is presented of recent data on direct one- and two-nucleon emission obtained in electron scattering at NIKHEF, Mainz and JLab. In the case of (e,e$'$p) reactions attention is focussed on extracting spectroscopic factors,…

Nuclear Theory · Physics 2007-05-23 S. Boffi

The polarized photon structure is described by two spin structure functions $g_1^\gamma$ and $g_2^\gamma$ which can be studied in the future polarized ep or e$^+$e$^-$ colliders. Here we investigate the QCD twist-3 effects in $g_2^\gamma$…

High Energy Physics - Phenomenology · Physics 2009-11-07 Hideshi Baba , Ken Sasaki , Tsuneo Uematsu

We review the role of two-photon exchange (TPE) in electron-hadron scattering, focusing in particular on hadronic frameworks suitable for describing the low and moderate Q^2 region relevant to most experimental studies. We discuss the…

Nuclear Theory · Physics 2015-05-28 J. Arrington , P. G. Blunden , W. Melnitchouk

After the EMC and subsequent experiments at CERN, SLAC and DESY on the deep inelastic scattering of polarized leptons on polarized nucleons, it is now established that the Q^2=0 value of the axial strange form factor of the nucleon, a…

High Energy Physics - Phenomenology · Physics 2009-11-07 W. M. Alberico , S. M. Bilenky , C. Maieron

The spin structure functions of the proton and the deuteron were measured during the EG4 experiment at Jefferson Lab in 2006. Data were collected for longitudinally polarized electron scattering off longitudinally polarized NH$_3$ and…

Nuclear Experiment · Physics 2026-01-06 A. Deur , S. E. Kuhn , M. Ripani , X. Zheng , A. G. Acar , P. Achenbach , K. P. Adhikari , J. S. Alvarado , M. J. Amaryan , W. R. Armstrong , H. Atac , H. Avakian , L. Baashen , N. A. Baltzell , L. Barion , M. Bashkanov , M. Battaglieri , B. Benkel , F. Benmokhtar , A. Bianconi , A. S. Biselli , W. A. Booth , F. B ossu , P. Bosted , S. Boiarinov , K. Th. Brinkmann , W. J. Briscoe , S. Bueltmann , V. D. Burkert , D. S. Carman , P. Chatagnon , J. P. Chen , G. Ciullo , P. L. Cole , M. Contalbrigo , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , M. Defurne , S. Diehl , C. Djalali , V. A. Drozdov , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , J. C. Faggert , S. Fegan , R. Fersch , A. Filippi , K. Gates , G. Gavalian , G. P. Gilfoyle , R. W. Gothe , L. Guo , H. Hakobyan , M. Hattawy , F. Hauenstein , D. Heddle , A. Hobart , M. Holtrop , D. G. Ireland , E. L. Isupov , H. Jiang , H. S. Jo , S. Joosten , H. Kang , C. Keith , M. Khandaker , W. Kim , F. J. Klein , V. Klimenko , P. Konczykowski , K. Kovacs , A. Kripko , V. Kubarovsky , L. Lanza , S. Lee , P. Lenisa , X. Li , E. Long , I. J. D. MacGregor , D. Marchand , V. Mascagna , D. Matamoros , B. McKinnon , D. Meekins , S. Migliorati , T. Mineeva , M. Mirazita , V. Mokeev , C. Munoz-Camacho , P. Nadel-Turonski , T. Nagorna , K. Neupane , S. Niccolai , M. Osipenko , A. I. Ostrovidov , P. Pandey , M. Paolone , L. L. Pappalardo , R. Paremuzyan , E. Pasyuk , S. J. Paul , W. Phelps , S. K. Phillips , J. Pierce , N. Pilleux , M. Pokhrel , J. W. Price , Y. Prok , A. Radic , T. Reed , J. Richards , G. Rosner , P. Rossi , A. A. Rusova , C. Salgado , A. Schmidt , R. A. Schumacher , Y. G. Sharabian , E. V. Shirokov , U. Shrestha , S. Sirca , K. Slifer , N. Sparveris , M. Spreafico , S. Stepanyan , I. I. Strakovsky , S. Strauch , V. Sulkosky , J. A. Tan , M. Tenorio , N. Trotta , R. Tyson , M. Ungaro , D. W. Upton , S. Vallarino , L. Venturelli , H. Voskanyan , E. Voutier , D. P. Watts , X. Wei , M. H. Wood , N. Zachariou , J. Zhang , M. Zurek

In treating the relativistic three-quark problem, a dressed-quark propagator parameterization is used which is compatible with recent lattice data and pion observables. Furthermore two-quark correlations are modeled as a series of quark…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Oettel , R. Alkofer

The formalism to describe electron scattering reactions on two-neutron halo nuclei is developed. The halo nucleus is described as a three-body system (core+n+n), and the wave function is obtained by solving the Faddeev equations in…

Nuclear Theory · Physics 2009-10-31 E. Garrido , E. Moya de Guerra

We report new measurements of the neutron charge form factor at low momentum transfer using quasielastic electrodisintegration of the deuteron. Longitudinally polarized electrons at an energy of 850 MeV were scattered from an isotopically…

The cross section for polarized and unpolarized electron-proton scattering is calculated taking into account radiative corrections in leading and next-to leading logarithmic approximation. The expression of the cross section is formally…

High Energy Physics - Phenomenology · Physics 2009-11-11 Yu. M. Bystritskiy , E. A. Kuraev , E. Tomasi-Gustafsson

Spin correlations are carefully investigated in elastic $e^{+}e^{-}$ scattering in QED, for initially \textit{polarized} as well as \textit{unpolarized} particles, with emphasis placed on energy or speed of the underlying particles involved…

Quantum Physics · Physics 2008-07-14 Nattapong Yongram

We discuss a possible measurement of the ratio of the nucleon structure functions, F2n/F2p, and the ratio of the up to down quark distributions, u/d, at large x, by performing deep inelastic electron scattering from the 3H and 3He mirror…

Nuclear Experiment · Physics 2007-05-23 G. G. Petratos , I. R. Afnan , F. Bissey , J. Gomez , A. T. Katramatou , W. Melnitchouk , A. W. Thomas

We report on a new measurement of the parity-violating asymmetry in quasielastic electron scattering from the deuteron at backward angles at Q2= 0.038 (GeV/c)2. This quantity provides a determination of the neutral weak axial vector form…

Nuclear Experiment · Physics 2014-11-18 SAMPLE collaboration , T. M. Ito

Recoil proton polarization observables were measured for both the p($\vec {\rm e}$,e$^\prime\vec{\rm p}\,$) and d($\vec {\rm e}$,e$^\prime\vec{\rm p}\,)$n reactions at two values of Q$^2$ using a newly commissioned proton Focal Plane…

We present data on the inclusive scattering of polarized electrons from a polarized He-3 target at energies from 0.862 to 5.06 GeV, obtained at a scattering angle of 15.5 degrees. Our data include measurements from the quasielastic peak,…

Nuclear Experiment · Physics 2008-11-26 M. Amarian

By using the quark-exchange formalism, realistic Faddeev wave functions and Fermi motion effect, we investigate deep inelastic electron scattering from A=3 mirror nuclei in the deep-valence region. The initial valence quarks in put are…

Nuclear Theory · Physics 2009-11-11 M. Modarres , M. M. Yazdanpanah , F. Zolfagharpour