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We present the final results for the deuteron spin structure functions obtained from the full data set collected with Jefferson Lab's CLAS in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2 and 5.8 GeV were scattered from…

Nuclear Experiment · Physics 2015-11-11 N. Guler , R. G. Fersch , S. E. Kuhn , P. Bosted , K. A. Griffioen , C. Keith , R. Minehart , Y. Prok , K. P. Adhikari , D. Adikaram , M. J. Amaryan , M. D. Anderson , S. Anefalos Pereira , J. Ball , M. Battaglieri , V. Batourine , I. Bedlinskiy , W. J. Briscoe , W. K. Brooks , S. Bultmann , V. D. Burkert , D. S. Carman , A. Celentano , S. Chandavar , G. Charles , L. Colaneri , P. L. Cole , M. Contalbrigo , D. Crabb , V. Crede , A. D Angelo , N. Dashyan , A. Deur , C. Djalali , G. E. Dodge , R. Dupre , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , A. Filippi , J. A. Fleming , T. A. Forest , B. Garillon , M. Garcon , N. Gevorgyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , J. T. Goetz , E. Golovatch , R. W. Gothe , M. Guidal , L. Guo , K. Hafidi , H. Hakobyan , N. Harrison , M. Hattawy , K. Hicks , D. Ho , M. Holtrop , S. M. Hughes , C. E. Hyde , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , H. S. Jo , K. Joo , S. Joosten , D. Keller , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , V. Kubarovsky , S. V. Kuleshov , K. Livingston , H. Y. Lu , I. J. D. MacGregor , B. McKinnon , M. Mirazita , V. Mokeev , R. A. Montgomery , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , L. A. Net , I. Niculescu , M. Osipenko , A. I. Ostrovidov , K. Park , E. Pasyuk , S. Pisano , O. Pogorelko , J. W. Price , S. Procureur , M. Ripani , A. Rizzo , G. Rosner , P. Rossi , P. Roy , F. Sabatie , C. Salgado , D. Schott , R. A. Schumacher , E. Seder , A. Simonyan , Iu. Skorodumina , D. Sokhan , N. Sparveris , I. I. Strakovsky , S. Strauch , V. Sytnik , Ye Tian , S. Tkachenko , M. Ungaro , E. Voutier , N. K. Walford , X. Wei , L. B. Weinstein , M. H. Wood , N. Zachariou , L. Zana , J. Zhang , Z. W. Zhao , I. Zonta

We apply a recently developed technique to extract for the first time the neutron F_2^n structure function from inclusive proton and deuteron data in the nucleon resonance region, and test the validity of quark-hadron duality in the…

High Energy Physics - Phenomenology · Physics 2010-04-06 S. P. Malace , Y. Kahn , W. Melnitchouk , C. E. Keppel

The spin-dependent structure function of the deuteron, g_1D, is calculated within a covariant framework. The off-shell structure of the bound nucleon gives corrections to the convolution model at a level of half a percent for x below 0.7,…

High Energy Physics - Phenomenology · Physics 2016-09-01 W. Melnitchouk , G. Piller , A. W. Thomas

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

We review the theory of polarized structure functions measured in deep-inelastic lepton-nucleon scattering, focusing on the most recent developments. We concentrate on the structure function $g_1$, emphasizing the phenomenological problems…

High Energy Physics - Phenomenology · Physics 2009-09-25 Stefano Forte

The production of slow nucleons in semi-inclusive deep inelastic electron scattering off the deuteron is investigated in the region $x \gsim 0.3$ for kinematical conditions accessible at $HERA$. Within the spectator mechanism the…

Nuclear Theory · Physics 2007-05-23 Silvano Simula

We demonstrate that leading twist nuclear shadowing leads to large corrections for the extraction of the neutron structure function F_2n from the future deuteron collider data both in the inclusive and in the tagged structure function…

High Energy Physics - Phenomenology · Physics 2009-11-10 L. Frankfurt , V. Guzey , M. Strikman

We explain spin structure for a spin-one hadron, in which there are new structure functions, in addition to the ones ($F_1$, $F_2$, $g_1$, $g_2$) which exist for the spin-1/2 nucleon, associated with its tensor structure. The new structure…

High Energy Physics - Phenomenology · Physics 2015-06-22 S. Kumano

Nucleon structure functions, as measured in lepton-nucleon scattering, have historically provided a critical observable in the study of partonic dynamics within the nucleon. However, at very large parton momenta it is both experimentally…

High Energy Physics - Experiment · Physics 2025-07-30 Debaditya Biswas , Fernando Araiza Gonzalez , William Henry , Abishek Karki , Casey Morean , Sooriyaarachchilage Nadeeshani , Abel Sun , Daniel Abrams , Zafar Ahmed , Bashar Aljawrneh , Sheren Alsalmi , George Ambrose , Whitney Armstrong , Arshak Asaturyan , Kofi Assumin-Gyimah , Carlos Ayerbe Gayoso , Anashe Bandari , Samip Basnet , Vladimir Berdnikov , Hem Bhatt , Deepak Bhetuwal , Werner Boeglin , Peter Bosted , Edward Brash , Masroor Bukhari , Haoyu Chen , Jian-Ping Chen , Mingyu Chen , Michael Eric Christy , Silviu Covrig Dusa , Kayla Craycraft , Samuel Danagoulian , Donal Day , Markus Diefenthaler , Mongi Dlamini , James Dunne , Burcu Duran , Dipangkar Dutta , Rolf Ent , Rory Evans , Howard Fenker , Nadia Fomin , Eric Fuchey , David Gaskell , Thir Narayan Gautam , Jens-Ole Hansen , Florian Hauenstein , A. Hernandez , Tanja Horn , Garth Huber , Mark Jones , Sylvester Joosten , Md Latiful Kabir , Cynthia Keppel , Achyut Khanal , Paul King , Edward Kinney , Michael Kohl , Nathaniel Lashley-Colthirst , Shujie Li , Wenliang Li , Anusha Habarakada Liyanage , David Mack , Simona Malace , Pete Markowitz , John Matter , David Meekins , Robert Michaels , Arthur Mkrtchyan , Hamlet Mkrtchyan , Zae Moore , S. J. Nazeer , Shirsendu Nanda , Gabriel Niculescu , Maria Niculescu , Huong Nguyen , Nuruzzaman Nuruzzaman , Bishnu Pandey , Sanghwa Park , Eric Pooser , Andrew Puckett , Melanie Rehfuss , Joerg Reinhold , Bradley Sawatzky , G. Smith , Holly Szumila-Vance , Arun Tadepalli , Vardan Tadevosyan , Richard Trotta , Stephen Wood , Carlos Yero , Jinlong Zhang

We report on a precision measurement of the neutron spin structure function $g^n_1$ using deep inelastic scattering of polarized electrons by polarized ^3He. For the kinematic range 0.014<x<0.7 and 1 (GeV/c)^2< Q^2< 17 (GeV/c)^2, we obtain…

High Energy Physics - Experiment · Physics 2012-08-03 The SLAC E154 Collaboration , K. Abe

We start from an MIT-bag model calculation which provides information about the constituent quark distributions in the nucleon. The constituent quarks, however, are themselves considered as complex objects whose partonic substructure is…

High Energy Physics - Phenomenology · Physics 2009-09-25 J. Keppler , H. M. Hofmann

We show that quasi-elastic inclusive scattering data on light nuclei for medium Q^2 furnish information on $G_M^n$, whereas the deep-inelastic region for large $Q^2$ provides the Structure Function $F_2^n(x,Q^2)$. Common to the two…

Nuclear Theory · Physics 2007-05-23 A. S. Rinat

An alternate method is described to extract the quark contribution to the spin of the nucleon directly from the first moment of the deuteron structure function, $g^d_1$. It is obtained without recourse to the use of input on the nucleon…

High Energy Physics - Phenomenology · Physics 2009-10-31 George Igo

We present a model independent procedure for extracting deep-inelastic structure function of "free'' neutron from the electron - deuteron scattering with protons produced in the target fragmentation region of the reaction. This procedure is…

High Energy Physics - Phenomenology · Physics 2008-11-26 Misak Sargsian , Mark Strikman

The experimental data on F2 structure functions of the proton and deuteron were used to construct their moments. In particular, recent measurements performed with CLAS detector at Jefferson Lab allowed to extend our knowledge of structure…

High Energy Physics - Phenomenology · Physics 2014-11-18 M. Osipenko , S. Simula , S. Kulagin , G. Ricco , CLAS Collaboration

We employ the maximum entropy method to extract the valence quark distributions of the neutron at a low scale, \( Q_0^2 \). At this initial scale, the neutron is defined to contain only three valence quarks, with no contributions from sea…

High Energy Physics - Phenomenology · Physics 2025-12-17 Chengdong Han , Rong Wang , Xurong Chen

Experimental data on the F2 structure functions of the proton and deuteron, including recent results from CLAS at Jefferson Lab, have been used to construct their n<=12 moments. A comprehensive analysis of the moments in terms of the…

High Energy Physics - Phenomenology · Physics 2008-11-26 M. Osipenko , W. Melnitchouk , S. Simula , S. Kulagin , G. Ricco , CLAS Collaboration

We report progress on nuclear structure functions, especially on their nuclear modifications and a new tensor structure function for the deuteron. To understand nuclear structure functions is an important step toward describing nuclei and…

High Energy Physics - Phenomenology · Physics 2016-04-20 S. Kumano

The deuteron deep inelastic unpolarized structure function F_2^D is calculated using the Wilson operator product expansion method. The long distance behaviour, related to the deuteron bound state properties, is evaluated using the…

Nuclear Theory · Physics 2010-12-17 J. Paulo Pinto , A. Amorim , F. D. Santos

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