Related papers: Evidence for Quark-Hadron Duality in the Proton Sp…

Quark-Hadron Duality in Neutron (3He) Spin Structure

We present experimental results of the first high-precision test of quark-hadron duality in the spin-structure function g_1 of the neutron and $^3$He using a polarized 3He target in the four-momentum-transfer-squared range from 0.7 to 4.0…

Nuclear Experiment · Physics 2008-12-18 P. Solvignon , N. Liyanage , J. -P. Chen , Seonho Choi , K. Aniol , T. Averett , W. Boeglin , A. Camsonne , G. D. Cates , G. Chang , E. Chudakov , B. Craver , F. Cusanno , A. Deur , D. Dutta , R. Ent , R. Feuerbach , S. Frullani , H. Gao , F. Garibaldi , R. Gilman , C. Glashausser , V. Gorbenko , O. Hansen , D. W. Higinbotham , H. Ibrahim , X. Jiang , M. Jones , A. Kelleher , J. Kelly , C. Keppel , W. Kim , W. Korsch , K. Kramer , G. Kumbartzki , J. J. LeRose , R. Lindgren , B. Ma , D. J. Margaziotis , P. Markowitz , K. McCormick , Z. -E. Meziani , R. Michaels , B. Moffit , P. Monaghan , C. Munoz Camacho , K. Paschke , B. Reitz , A. Saha , R. Sheyor , J. Singh , K. Slifer , V. Sulkosky , A. Tobias , G. M. Urciuoli , K. Wang , K. Wijesooriya , B. Wojtsekhowski , S. Woo , J. -C. Yang , X. Zheng , L. Zhu

Proton Spin Structure in the Resonance Region

We have examined the spin structure of the proton in the region of the nucleon resonances (1.085 GeV < W < 1.910 GeV) at an average four momentum transfer of Q^2 = 1.3 GeV^2. Using the Jefferson Lab polarized electron beam, a spectrometer,…

Nuclear Experiment · Physics 2008-11-26 RSS Collaboration , F. R. Wesselmann , K. Slifer , S. Tajima , A. Aghalaryan , A. Ahmidouch , R. Asaturyan , F. Bloch , W. Boeglin , P. Bosted , C. Carasco , R. Carlini , J. Cha , J. P. Chen , M. E. Christy , L. Cole , L. Coman , D. Crabb , S. Danagoulian , D. Day , J. Dunne , M. Elaasar , R. Ent , H. Fenker , E. Frlez , L. Gan , D. Gaskell , J. Gomez , B. Hu , M. K. Jones , J. Jourdan , C. Keith , C. E. Keppel , M. Khandaker , A. Klein , L. Kramer , Y. Liang , J. Lichtenstadt , R. Lindgren , D. Mack , P. McKee , D. McNulty , D. Meekins , H. Mkrtchyan , R. Nasseripour , I. Niculescu , K. Normand , B. Norum , D. Pocanic , Y. Prok , B. Raue , J. Reinhold , J. Roche , D. Rohe , O. A. Rondon , N. Savvinov , B. Sawatzky , M. Seely , I. Sick , C. Smith , G. Smith , S. Stepanyan , L. Tang , G. Testa , W. Vulcan , K. Wang , G. Warren , S. Wood , C. Yan , L. Yuan , J. Yun , M. Zeier , H. Zhu

The Spin-dependent Structure Function of the Proton g_1^p and a Test of the Bjorken Sum Rule

The inclusive double-spin asymmetry, A_1^p, has been measured at COMPASS in deepinelastic polarised muon scattering off a large polarised NH3 target. The data, collected in the year 2007, cover the range Q2 > 1 (GeV/c)^2, 0.004 < x < 0.7…

High Energy Physics - Experiment · Physics 2014-11-20 The COMPASS Collaboration , M. G. Alekseev

Detailed Study of Quark-Hadron Duality in Spin Structure Functions of the Proton and Neutron

In this paper, we present for the first time comprehensive and detailed results on the correspondence between the extrapolated deep inelastic structure function $g_1$ of both the proton and the neutron with the same quantity measured in the…

Nuclear Experiment · Physics 2023-04-12 Victoria Lagerquist , Sebastian E. Kuhn , Nobuo Sato

Longitudinal double-spin asymmetries in semi-inclusive deep-inelastic scattering of electrons and positrons by protons and deuterons

A comprehensive collection of results on longitudinal double-spin asymmetries is presented for charged pions and kaons produced in semi-inclusive deep-inelastic scattering of electrons and positrons on the proton and deuteron, based on the…

High Energy Physics - Experiment · Physics 2019-06-12 HERMES Collaboration , A. Airapetian , N. Akopov , Z. Akopov , E. C. Aschenauer , W. Augustyniak , R. Avakian , A. Avetissian , S. Belostotski , H. P. Blok , A. Borissov , V. Bryzgalov , G. P. Capitani , E. Cisbani , G. Ciullo , M. Contalbrigo , P. F. Dalpiaz , W. Deconinck , R. De Leo , L. De Nardo , E. De Sanctis , M. Diefenthaler , P. Di Nezza , M. Düren , G. Elbakian , F. Ellinghaus , A. Fantoni , L. Felawka , S. Frullani , G. Gavrilov , V. Gharibyan , F. Giordano , S. Gliske , D. Hasch , Y. Holler , A. Ivanilov , H. E. Jackson , S. Joosten , R. Kaiser , G. Karyan , T. Keri , E. Kinney , A. Kisselev , V. Korotkov , V. Kozlov , P. Kravchenko , V. G. Krivokhijine , L. Lagamba , L. Lapikás , I. Lehmann , W. Lorenzon , B. -Q. Ma , D. Mahon , S. I. Manaenkov , Y. Mao , B. Marianski , H. Marukyan , Y. Miyachi , A. Movsisyan , V. Muccifora , A. Mussgiller , Y. Naryshkin , A. Nass , G. Nazaryan , W. -D. Nowak , L. L. Pappalardo , R. Perez-Benito , A. Petrosyan , P. E. Reimer , A. R. Reolon , C. Riedl , K. Rith , G. Rosner , A. Rostomyan , J. Rubin , D. Ryckbosch , Y. Salomatin , G. Schnell , B. Seitz , T. -A. Shibata , M. Statera , E. Steffens , J. J. M. Steijger , S. Taroian , A. Terkulov , R. Truty , A. Trzcinski , M. Tytgat , P. B. van der Nat , Y. Van Haarlem , C. Van Hulse , D. Veretennikov , V. Vikhrov , I. Vilardi , C. Vogel , S. Wang , S. Yaschenko , B. Zihlmann , P. Zupranski

New Results on Nucleon Spin Structure

Recent precision spin structure data from Jefferson Lab have significantly advanced our knowledge of nucleon structure in the valence quark (high-$x$) region and improved our understanding of higher-twist effects, spin sum rules and…

Nuclear Experiment · Physics 2007-05-23 Jian-ping Chen

Quark-Hadron Duality in Neutron Spin-Structure and g_2 moments at intermediate Q**2

Jefferson Lab experiment E01-012 measured the He-3 spin-structure functions and virtual photon asymmetries in the resonance region in the momentum transfer range 1.0<Q**2<4.0(GeV/c)**2. Our data, when compared with existing deep inelastic…

Nuclear Experiment · Physics 2014-11-21 Patricia Solvignon

Spin Asymmetry in Muon--Proton Deep Inelastic Scattering on a Transversely-Polarized Target

We measured the spin asymmetry in the scattering of 100 GeV longitudinally-polarized muons on transversely polarized protons. The asymmetry was found to be compatible with zero in the kinematic range $0.006<x<0.6$,…

High Energy Physics - Experiment · Physics 2012-08-27 The Spin Muon Collaboration

Longitudinal double-spin asymmetry $A_1^{\rm p}$ and spin-dependent structure function $g_1^{\rm p}$ of the proton at small values of $x$ and $Q^2$

We present a precise measurement of the proton longitudinal double-spin asymmetry $A_1^{\rm p}$ and the proton spin-dependent structure function $g_1^{\rm p}$ at photon virtualities $0.006~({\rm GeV}/c)^2<Q^2 < 1~({\rm GeV}/c)^2$ in the…

High Energy Physics - Experiment · Physics 2018-05-23 M. Aghasyan , R. Akhunzyanov , M. G. Alexeev , G. D. Alexeev , A. Amoroso , V. Andrieux , N. V. Anfimov , V. Anosov , A. Antoshkin , K. Augsten , W. Augustyniak , A. Austregesilo , C. D. R. Azevedo , B. Badelek , F. Balestra , M. Ball , J. Barth , R. Beck , Y. Bedfer , J. Bernhard , K. Bicker , E. R. Bielert , R. Birsa , M. Bodlak , P. Bordalo , F. Bradamante , A. Bressan , M. Buechele , V. E. Burtsev , W. -C. Chang , C. Chatterjee , M. Chiosso , I. Choi , A. G. Chumakov , S. -U. Chung , A. Cicuttin , M. L. Crespo , S. Dalla Torre , S. S. Dasgupta , S. Dasgupta , O. Yu. Denisov , L. Dhara , S. V. Donskov , N. Doshita , Ch. Dreisbach , W. Duennweber , R. R. Dusaev , M. Dziewiecki , A. Efremov , P. D. Eversheim , M. Faessler , A. Ferrero , M. Finger , M. Finger , H. Fischer , C. Franco , N. du Fresne von Hohenesche , J. M. Friedrich , V. Frolov , E. Fuchey , F. Gautheron , O. P. Gavrichtchouk , S. Gerassimov , J. Giarra , F. Giordano , I. Gnesi , M. Gorzellik , A. Grasso , A. Gridin , M. Grosse Perdekamp , B. Grube , T. Grussenmeyer , A. Guskov , D. Hahne , G. Hamar , D. von Harrach , F. H. Heinsius , R. Heitz , F. Herrmann , N. Horikawa , N. d'Hose , C. -Y. Hsieh , S. Huber , S. Ishimoto , A. Ivanov , Yu. Ivanshin , T. Iwata , V. Jary , R. Joosten , P. Joerg , E. Kabuss , A. Kerbizi , B. Ketzer , G. V. Khaustov , Yu. A. Khokhlov , Yu. Kisselev , F. Klein , J. H. Koivuniemi , V. N. Kolosov , K. Kondo , K. Koenigsmann , I. Konorov , V. F. Konstantinov , A. M. Kotzinian , O. M. Kouznetsov , Z. Kral , M. Kraemer , P. Kremser , F. Krinner , Z. V. Kroumchtein , Y. Kulinich , F. Kunne , K. Kurek , R. P. Kurjata , I. I. Kuznetsov , A. Kveton , A. A. Lednev , E. A. Levchenko , M. Levillain , S. Levorato , Y. -S. Lian , J. Lichtenstadt , R. Longo , V. E. Lyubovitskij , A. Maggiora , A. Magnon , N. Makins , N. Makke , G. K. Mallot , S. A. Mamon , B. Marianski , A. Martin , J. Marzec , J. Matousek , H. Matsuda , T. Matsuda , G. V. Meshcheryakov , M. Meyer , W. Meyer , Yu. V. Mikhailov , M. Mikhasenko , E. Mitrofanov , N. Mitrofanov , Y. Miyachi , A. Moretti , A. Nagaytsev , F. Nerling , D. Neyret , J. Novy , W. -D. Nowak , G. Nukazuka , A. S. Nunes , A. G. Olshevsky , I. Orlov , M. Ostrick , D. Panzieri , B. Parsamyan , S. Paul , J. -C. Peng , F. Pereira , M. Pesek , M. Peskova , D. V. Peshekhonov , N. Pierre , S. Platchkov , J. Pochodzalla , V. A. Polyakov , J. Pretz , M. Quaresma , C. Quintans , S. Ramos , C. Regali , G. Reicherz , C. Riedl , N. S. Rogacheva , D. I. Ryabchikov , A. Rybnikov , A. Rychter , R. Salac , V. D. Samoylenko , A. Sandacz , C. Santos , S. Sarkar , I. A. Savin , T. Sawada , G. Sbrizzai , P. Schiavon , K. Schmidt , H. Schmieden , K. Schoenning , E. Seder , A. Selyunin , L. Silva , L. Sinha , S. Sirtl , M. Slunecka , J. Smolik , A. Srnka , D. Steffen , M. Stolarski , O. Subrt , M. Sulc , H. Suzuki , A. Szabelski , T. Szameitat , P. Sznajder , M. Tasevsky , S. Tessaro , F. Tessarotto , A. Thiel , J. Tomsa , F. Tosello , V. Tskhay , S. Uhl , B. I. Vasilishin , A. Vauth , J. Veloso , A. Vidon , M. Virius , S. Wallner , T. Weisrock , M. Wilfert , J. ter Wolbeek , K. Zaremba , P. Zavada , M. Zavertyaev , E. Zemlyanichkina , N. Zhuravlev , M. Ziembicki

Beam-Target Double Spin Asymmetry A_LT in Charged Pion Production from Deep Inelastic Scattering on a Transversely Polarized He-3 Target at 1.4<Q^2<2.7 GeV^2

We report the first measurement of the double-spin asymmetry $A_{LT}$ for charged pion electroproduction in semi\nobreakdash-inclusive deep\nobreakdash-inelastic electron scattering on a transversely polarized $^{3}$He target. The…

Nuclear Experiment · Physics 2019-08-13 J. Huang , K. Allada , C. Dutta , J. Katich , X. Qian , Y. Wang , Y. Zhang , K. Aniol , J. R. M. Annand , T. Averett , F. Benmokhtar , W. Bertozzi , P. C. Bradshaw , P. Bosted , A. Camsonne , M. Canan , G. D. Cates , C. Chen , J. -P. Chen , W. Chen , K. Chirapatpimol , E. Chudakov , E. Cisbani , J. C. Cornejo , F. Cusanno , M. M. Dalton , W. Deconinck , C. W. de Jager , R. De Leo , X. Deng , A. Deur , H. Ding , P. A. M. Dolph , D. Dutta , L. El Fassi , S. Frullani , H. Gao , F. Garibaldi , D. Gaskell , S. Gilad , R. Gilman , O. Glamazdin , S. Golge , L. Guo , D. Hamilton , O. Hansen , D. W. Higinbotham , T. Holmstrom , M. Huang , H. F. Ibrahim , M. Iodice , X. Jiang , G. Jin , M. K. Jones , A. Kelleher , W. Kim , A. Kolarkar , W. Korsch , J. J. LeRose , X. Li , Y. Li , R. Lindgren , N. Liyanage , E. Long , H. -J. Lu , D. J. Margaziotis , P. Markowitz , S. Marrone , D. McNulty , Z. -E. Meziani , R. Michaels , B. Moffit , C. Muñoz Camacho , S. Nanda , A. Narayan , V. Nelyubin , B. Norum , Y. Oh , M. Osipenko , D. Parno , J. C. Peng , S. K. Phillips , M. Posik , A. J. R. Puckett , Y. Qiang , A. Rakhman , R. D. Ransome , S. Riordan , A. Saha , B. Sawatzky , E. Schulte , A. Shahinyan , M. H. Shabestari , S. Širca , S. Stepanyan , R. Subedi , V. Sulkosky , L. -G. Tang , A. Tobias , G. M. Urciuoli , I. Vilardi , K. Wang , B. Wojtsekhowski , X. Yan , H. Yao , Y. Ye , Z. Ye , L. Yuan , X. Zhan , Y. -W. Zhang , B. Zhao , X. Zheng , L. Zhu , X. Zhu , X. Zong

Quark-Hadron Duality in Spin Structure Functions g1p and g1d

New measurements of the spin structure functions of the proton and deuteron g1p(x,Q2) and g1d(x,Q2) in the nucleon resonance region are compared with extrapolations of target-mass-corrected next-to-leading-order (NLO) QCD fits to higher…

High Energy Physics - Phenomenology · Physics 2010-04-06 P. E. Bosted , K. V. Dharmawardane , G. E. Dodge , T. A. Forest , S. E. Kuhn , Y. Prok et al.

Double-Spin Asymmetry in the Cross Section for Exclusive rho^0 Production in Lepton-Proton Scattering

Evidence for a positive longitudinal double-spin asymmetry <A_1^rho> = 0.24 +-0.11 (stat) +-0.02 (syst) in the cross section for exclusive diffractive rho^0(770) vector meson production in polarised lepton-proton scattering was observed by…

High Energy Physics - Experiment · Physics 2009-04-15 HERMES Collaboration , A. Airapetian

Precision Measurements of $A_1^n$ in the Deep Inelastic Regime

We have performed precision measurements of the double-spin virtual-photon asymmetry $A_1$ on the neutron in the deep inelastic scattering regime, using an open-geometry, large-acceptance spectrometer. Our data cover a wide kinematic range…

Nuclear Experiment · Physics 2019-08-02 D. S. Parno , D. Flay , M. Posik , K. Allada , W. Armstrong , T. Averett , F. Benmokhtar , W. Bertozzi , A. Camsonne , M. Canan , G. D. Cates , C. Chen , J. -P. Chen , S. Choi , E. Chudakov , F. Cusanno , M. M. Dalton , W. Deconinck , C. W. de Jager , X. Deng , A. Deur , C. Dutta , L. El Fassi , G. B. Franklin , M. Friend , H. Gao , F. Garibaldi , S. Gilad , R. Gilman , O. Glamazdin , S. Golge , J. Gomez , L. Guo , O. Hansen , D. W. Higinbotham , T. Holmstrom , J. Huang , C. Hyde , H. F. Ibrahim , X. Jiang , G. Jin , J. Katich , A. Kelleher , A. Kolarkar , W. Korsch , G. Kumbartzki , J. J. LeRose , R. Lindgren , N. Liyanage , E. Long , A. Lukhanin , V. Mamyan , D. McNulty , Z. -E. Meziani , R. Michaels , M. Mihovilovič , B. Moffit , N. Muangma , S. Nanda , A. Narayan , V. Nelyubin , B. Norum , Nuruzzaman , Y. Oh , J. C. Peng , X. Qian , Y. Qiang , A. Rakhman , S. Riordan , A. Saha , B. Sawatzky , M. H. Shabestari , A. Shahinyan , S. Širca , P. Solvignon , R. Subedi , V. Sulkosky , W. A. Tobias , W. Troth , D. Wang , Y. Wang , B. Wojtsekhowski , X. Yan , H. Yao , Y. Ye , Z. Ye , L. Yuan , X. Zhan , Y. Zhang , Y. -W. Zhang , B. Zhao , X. Zheng

Measurements of the Proton and Deuteron Spin Structure Function g2 and Asymmetry A2

We have measured proton and deuteron virtual photon-nucleon asymmetries A2p and A2d and structure functions g2p and g2d over the range 0.03<x<0.8 and 1.3<Q2<10 (GeV/c)2 by inelastically scattering polarized electrons off polarized ammonia…

High Energy Physics - Experiment · Physics 2008-11-26 The E143 Collaboration , K. Abe et al

Measurements of Double-Polarized Compton Scattering Asymmetries and Extraction of the Proton Spin Polarizabilities

The spin polarizabilities of the nucleon describe how the spin of the nucleon responds to an incident polarized photon. The most model-independent way to measure the nucleon spin polarizabilities is through polarized Compton scattering.…

Nuclear Experiment · Physics 2015-03-23 P. P. Martel , R. Miskimen , P. Aguar-Bartolome , J. Ahrens , C. S. Akondi , J. R. M. Annand , H. J. Arends , W. Barnes , R. Beck , A. Bernstein , N. Borisov , A. Braghieri , W. J. Briscoe , S. Cherepnya , C. Collicott , S. Costanza , A. Denig , M. Dieterle , E. J. Downie , L. V. Fil'kov , S. Garni , D. I. Glazier , W. Gradl , G. Gurevich , P. Hall Barrientos , D. Hamilton , D. Hornidge , D. Howdle , G. M. Huber , T. C. Jude , A. Kaeser , V. L. Kashevarov , I. Keshelashvili , R. Kondratiev , M. Korolija , B. Krusche , A. Lazarev , V. Lisin , K. Livingston , I. J. D. MacGregor , J. Mancell , D. M. Manley , W. Meyer , D. G. Middleton , A. Mushkarenkov , B. M. K. Nefkens , A. Neganov , A. Nikolaev , M. Oberle , H. Ortega Spina , M. Ostrick , P. Ott , P. B. Otte , B. Oussena , P. Pedroni , A. Polonski , V. Polyansky , S. Prakhov , A. Rajabi , G. Reicherz , T. Rostomyan , A. Sarty , S. Schrauf , S. Schumann , M. H. Sikora , A. Starostin , O. Steffen , I. I. Strakovsky , T. Strub , I. Supek , M. Thiel , L. Tiator , A. Thomas , M. Unverzagt , Y. Usov , D. P. Watts , L. Witthauer , D. Werthmüller , M. Wolfes

Measurement of the longitudinal spin structure of the proton by COMPASS

The inclusive A_1,p and hadron double-spin asymmetries A_p^pi+, A_p^pi-, A_p^K+, A_p^K- measured at COMPASS (CERN SPS) in deep-inelastic scattering of a polarized muon beam off a polarized NH_3 solid target are presented. The results have…

High Energy Physics - Experiment · Physics 2019-08-13 A. Korzenev

Spin-dependent Parton Distributions from Polarized Structure Function Data

In the past year, polarized deep inelastic scattering experiments at CERN and SLAC have obtained structure function measurements off proton, neutron and deuteron targets at a level of precision never before achieved. The measurements can be…

High Energy Physics - Phenomenology · Physics 2010-04-06 T. Gehrmann , W. J. Stirling

Double Spin Asymmetries A_NN and A_SS at sqrt{s}=200 GeV in Polarized Proton-Proton Elastic Scattering at RHIC

We present the first measurements of the double spin asymmetries A_NN and A_SS at sqrt{s}=200 GeV, obtained by the pp2pp experiment using polarized proton beams at the Relativistic Heavy Ion Collider (RHIC). The data were collected in the…

Nuclear Experiment · Physics 2008-11-26 pp2pp Collaboration , S. Bultmann , I. H. Chiang , R. E. Chrien , A. Drees , R. L. Gill , W. Guryn , J. Landgraf , T. A. Ljubicic , D. Lynn , C. Pearson , P. Pile , A. Rusek , M. Sakitt , S. Tepikian , K. Yip , J. Chwastowski , B. Pawlik , M. Haguenauer , A. A. Bogdanov , S. B. Nurushev , M. F. Runtzo , M. N. Strikhanov , I. G. Alekseev , V. P. Kanavets , L. I. Koroleva , B. V. Morozov , D. N. Svirida , A. Khodinov , M. Rijssenbeek , L. Whitehead , S. Yeung , K. De , N. Guler , J. Li , N. Ozturk , A. Sandacz

Longitudinal double spin asymmetry $A_1^p$ and spin-dependent structure function $g_1^p$ of the proton at low $x$ and low $Q^2$ from COMPASS

The COMPASS experiment at CERN has collected a large sample of events of inelastic scattering of longitudinally polarised muons off longitudinally polarised protons in the non-perturbative region (four-momentum transfer squared $Q^2<1$…

High Energy Physics - Experiment · Physics 2019-08-13 A. S. Nunes

Observation of quark-hadron duality in gamma*-p helicity cross sections

Combining data on unpolarized and polarized inclusive proton structure functions, we perform the first detailed study of quark-hadron duality in individual helicity-1/2 and 3/2 virtual photoproduction cross sections. We find that duality is…

Nuclear Theory · Physics 2011-04-05 S. P. Malace , W. Melnitchouk , A. Psaker