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We review recent developments in the theory and phenomenology of polarized structure functions. We summarize recent experimental data on the proton and deuteron structure function $g_1$, and their impact on the understanding of polarized…

High Energy Physics - Phenomenology · Physics 2008-02-03 Stefano Forte

We calculate the unpolarised deep inelastic structure function of a relativistic deuteron within a covariant framework. An exact treatment of nucleon off-shell effects is shown to give corrections to the widely-used convolution model, even…

Nuclear Theory · Physics 2008-11-26 W. Melnitchouk , A. W. Schreiber , A. W. Thomas

Three-nucleon forces, which compose an up-to-date subject in few-nucleon systems, provide a good account of the triton binding energy and the cross section minimum in proton-deuteron elastic scattering, while do not succeed in explaining…

Nuclear Theory · Physics 2009-11-07 S. Ishikawa , M. Tanifuji , Y. Iseri

The COMPASS experiment is a fixed target experiment at the CERN SPS using muon and hadron beams for the investigation of the spin structure of the nucleon and hadron spectroscopy. The main objective of the muon physics program is the study…

High Energy Physics - Experiment · Physics 2019-08-13 C. Schill

General formulas describing deuteron spin dynamics in storage rings with allowance for the tensor electric and magnetic polarizabilities are derived. It is found that an initially tensor-polarized deuteron beam can acquire a final…

Nuclear Theory · Physics 2008-11-26 Alexander J. Silenko

The neutron's deep-inelastic structure functions provide essential information for the flavor separation of the nucleon parton densities, the nucleon spin decomposition, and precision studies of QCD phenomena in the flavor-singlet and…

High Energy Physics - Phenomenology · Physics 2014-11-03 W. Cosyn , V. Guzey , D. W. Higinbotham , C. Hyde , S. Kuhn , P. Nadel-Turonski , K. Park , M. Sargsian , M. Strikman , C. Weiss

Polarization observables in inclusive and exclusive electrodisintegration of the deuteron using a polarized beam and an oriented target are systematically surveyed using the standard nonrelativistic framework of nuclear theory but with…

Nuclear Theory · Physics 2008-11-26 Hartmuth Arenhövel , Winfried Leidemann , Edward L. Tomusiak

The nucleon structure study in nuclear deep inelastic scattering is considered. It is shown that nuclear data provide a new source of information about dynamics of parton distributions in the nucleon. An example of the neutron structure…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. Molochkov

The spin-averaged structure function of the neutron, F_2^n, is extracted from recent deuteron data, taking into account the small but significant corrections due to nuclear effects in the deuteron. At small x, the F_2D/F_2p ratio measured…

Nuclear Theory · Physics 2010-02-17 W. Melnitchouk , A. W. Thomas

We derive relations between spin-dependent nuclear and nucleon g_1 and g_2 structure functions within the nuclear impulse approximation, which are valid at all Q^2, and in both the resonance and deep inelastic regions. We apply the…

Nuclear Theory · Physics 2008-11-26 S. A. Kulagin , W. Melnitchouk

Using a simple picture of the constituent quark as a composite system of point-like partons, we construct the polarized parton distributions by a convolution between constituent quark momentum distributions and constituent quark structure…

High Energy Physics - Phenomenology · Physics 2011-04-15 Sergio Scopetta , Vicente Vento , Marco Traini

The tensor electric polarizability of the deuteron gives important information about spin-dependent nuclear forces. If a resonant horizontal electric field acts on a deuteron beam circulating into a storage ring, the tensor electric…

Nuclear Theory · Physics 2008-11-26 Alexander J. Silenko

The fragmentation of deuterons into pions emitted forward in the kinematic region forbidden for free nucleon-nucleon collisions is analyzed. The inclusive relativistic invariant spectrum of pions and the tensor analyzing power T_{20} are…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. Yu. Illarionov , A. G. Litvinenko , G. I. Lykasov

We present a detailed analysis of the uncertainty in the neutron F2n structure function extracted from inclusive deuteron and proton deep-inelastic scattering data. The analysis includes experimental uncertainties as well as uncertainties…

High Energy Physics - Phenomenology · Physics 2013-05-30 J. Arrington , J. G. Rubin , W. Melnitchouk

The smallness of the deuteron tensor spin structure function is the necessary condition to extract neutron $g_1$ function neglecting the nuclear effects. The oscillating behavior of the quark tensor spin structure function leading to the…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. V. Efremov , O. V. Teryaev

Structure functions, as measured in lepton-nucleon scattering, have proven to be very useful in studying the quark dynamics within the nucleon. However, it is experimentally difficult to separately determine the longitudinal and transverse…

The inclusive polarized structure functions of the proton and deuteron, g1p and g1d, were measured with high statistical precision using polarized 6 GeV electrons incident on a polarized ammonia target in Hall B at Jefferson Laboratory.…

Nuclear Experiment · Physics 2019-08-13 Y. Prok , P. Bosted , N. Kvaltine , K. P. Adhikari , D. Adikaram , M. Aghasyan , M. J. Amaryan , M. D. Anderson , S. Anefalos Pereira , H. Avakian , H. Baghdasaryan , J. Ball , N. A. Baltzell , M. Battaglieri , A. S. Biselli , J. Bono , W. J. Briscoe , J. Brock , W. K. Brooks , S. Bültmann , V. D. Burkert , C. Carlin , D. S. Carman , A. Celentano , S. Chandavar , L. Colaneri , P. L. Cole , M. Contalbrigo , O. Cortes , D. Crabb , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , A. Deur , C. Djalali , G. E. Dodge , D. Doughty , R. Dupre , A. El Alaoui , L. El Fassi , L. Elouadrhiri , G. Fedotov , S. Fegan , R. Fersch , J. A. Fleming , T. A. Forest , M. Garcon , N. Gevorgyan , Y. Ghandilyan , G. P. Gilfoyle , F. X. Girod , K. L. Giovanetti , J. T. Goetz , W. Gohn , R. W. Gothe , K. A. Griffioen , B. Guegan , N. Guler , K. Haffidi , C. Hanretty , N. Harrison , M. Hattawy , K. Hicks , D. Ho , M. Holtrop , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , S. Jawalkar , X. Jiang , H. S. Jo , K. Joo , N. Kalantarians , C. Keith , D. Keller , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , S. Koirala , V. Kubarovsky , S. E. Kuhn , S. V. Kuleshov , P. Lenisa , K. Livingston , H. Y. Lu , I . J. D. MacGregor , N. Markov , M. Mayee , B. McKinnon , D. Meekins , T. Mineeva , M. Mirazita , V. Mokeev , R. A. Montgomery , H. Moutarde , A Movsisyan , E. Munevar , C. Munoz Camacho , P. Nadel-Turonski , S. Niccolai , G. Niculescu , I. Niculescu , M. Osipenko , A. I. Ostrovidov , L. L. Pappalardo , R. Paremuzyan , K. Park , P. Peng , J. J. Phillips , J. Pierce , S. Pisano , O. Pogorelko , S. Pozdniakov , J. W. Price , S. Procureur , D. Protopopescu , A. J. R. Puckett , B. A. Raue , D. Rimal , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , P. Roy , F. Sabatié , M. S. Saini , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , Y. G. Sharabian , A. Simonyan , C. Smith , G. Smith , D. I. Sober , D. Sokhan , S. S. Stepanyan , S. Stepanyan , I. I. Strakovsky , S. Strauch , V. Sytnik , M. Taiuti , W. Tang , S. Tkachenko , M. Ungaro , B . Vernarsky , A. V. Vlassov , H. Voskanyan , E. Voutier , N. K. Walford , D . P. Watts , L. B. Weinstein , N. Zachariou , L. Zana , J. Zhang , B. Zhao , Z. W. Zhao , I. Zonta

It is shown that the magnitude of tensor polarization of the deuteron beam, which arises owing to the spin dichroism effect, depends appreciably on the angular width of the detector that registers the deuterons transmitted through the…

High Energy Physics - Phenomenology · Physics 2015-06-05 V. G. Baryshevsky , A. R. Bartkevich

Few-body systems offer a unique challenge to those interested in deep inelastic scattering. Using the deuteron as the simplest and most easily solvable nuclear system we review the main physics issues in the valence and sea quark regimes.…

High Energy Physics - Phenomenology · Physics 2008-11-26 A. W. Thomas , W. Melnitchouk

New measurements are reported on the deuteron spin structure function g_1^d. These results were obtained from deep inelastic scattering of 48.3 GeV electrons on polarized deuterons in the kinematic range 0.01 < x < 0.9 and 1 < Q^2 < 40…

High Energy Physics - Experiment · Physics 2012-08-27 E155 Collaboration