Related papers: Spin-Flavor Decomposition in Polarized Semi-Inclus…

A Planned Jefferson Lab Experiment on Spin-Flavor Decomposition

Experiment E04-113 at Jefferson Lab Hall C plans to measure the beam-target double-spin asymmetries in semi-inclusive deep-inelastic $\vec p(e, e^\prime h)X$ and $\vec d(e, e^\prime h)X$ reactions ($h=\pi^+, \pi^-, K^+$ or$K^-$) with a 6…

High Energy Physics - Experiment · Physics 2017-08-23 Xiaodong Jiang , Peter Bosted , Mark Jones , Donal Day

Single/Double-Spin Asymmetry Measurements of Semi-Inclusive Pion Electroproduction on a Transversely Polarized 3He Target through Deep Inelastic Scattering

Parton distribution functions, which represent the flavor and spin structure of the nucleon, provide invaluable information in illuminating quantum chromodynamics in the confinement region. Among various processes that measure such parton…

Nuclear Experiment · Physics 2012-07-20 Xin Qian

Measurement of the Target-Normal Single-Spin Asymmetry in Deep-Inelastic Scattering from the Reaction $^{3}\mathrm{He}^{\uparrow}(e,e')X$

We report the first measurement of the target-normal single-spin asymmetry in deep-inelastic scattering from the inclusive reaction $^3$He$^{\uparrow}\left(e,e' \right)X$ on a polarized $^3$He gas target. Assuming time-reversal invariance,…

Nuclear Experiment · Physics 2014-08-05 J. Katich , X. Qian , Y. X. Zhao , K. Allada , 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 , C. Dutta , 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 , J. Huang , 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. Muńoz 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 , 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 , L. Zhu , X. Zhu , X. Zong

Flavor Asymmetries in the Proton and Semi-Inclusive Processes

Semi-inclusive electron scattering provides a powerful tool with which to study the spin and flavor distributions in the proton. Greater kinematic coverage at the proposed Electron-Polarized Ion Collider facility will enable the valence d/u…

High Energy Physics - Phenomenology · Physics 2007-05-23 W. Melnitchouk

Flavor Decomposition of the Polarized Quark Distributions in the Nucleon from Inclusive and Semi-inclusive Deep-inelastic Scattering

Spin asymmetries of semi-inclusive cross sections for the production of positively and negatively charged hadrons have been measured in deep-inelastic scattering of polarized positrons on polarized hydrogen and 3He targets, in the kinematic…

High Energy Physics - Experiment · Physics 2008-11-26 K. Ackerstaff , The HERMES Collaboration

Measurement of double polarized asymmetries in quasi-elastic processes ${}^3\vec{He}(\vec{e},e' d)$ and ${}^3\vec{He}(\vec{e},e' p)$

This thesis is dedicated to a study of a spin-isospin structure of the polarized ${}^3\mathrm{He}$. First, an introduction to the spin structure of ${}^3\mathrm{He}$ is given, followed by a brief overview of past experiments. The main focus…

Nuclear Experiment · Physics 2012-08-06 Miha Mihovilovic

Double Deeply Virtual Compton Scattering at Jefferson Lab Hall A

This paper presents our project and perspectives to measure for the first time beam spin asymmetries from Double Deeply Virtual Compton Scattering in the $eP\to e'P' \mu^+\mu^-$ reaction at Jefferson Lab. Our goal is to constrain the…

Nuclear Experiment · Physics 2024-03-06 Marie Boër , Debaditya Biswas

Measurement of pretzelosity asymmetry of charged pion production in Semi-Inclusive Deep Inelastic Scattering on a polarized $^3$He target

An experiment to measure single-spin asymmetries in semi-inclusive production of charged pions in deep-inelastic scattering on a transversely polarized $^3$He target was performed at Jefferson Lab in the kinematic region of $0.16<x<0.35$…

Nuclear Experiment · Physics 2015-12-16 Y. Zhang , X. Qian , K. Allada , C. Dutta , J. Huang , J. Katich , Y. Wang , 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. Sirca , S. Stepanyan , R. Subedi , V. Sulkosky , L. -G. Tang , W. 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

Semi-Inclusive $\pi_0$ target and beam-target asymmetries from 6 GeV electron scattering with CLAS

We present precision measurements of the target and beam-target spin asymmetries from neutral pion electroproduction in deep-inelastic scattering (DIS) using the CEBAF Large Acceptance Spectrometer (CLAS) at Jefferson Lab. We scattered…

Nuclear Experiment · Physics 2018-06-20 S. Jawalkar , S. Koirala , H. Avakian , P. Bosted , K. A. Griffioen , C. Keith , S. E. Kuhn , K. P. Adhikari , S. Adhikari , D. Adikaram , Z. Akbar , M. J. Amaryan , S. Anefalos Pereira , H. Avakian , J. Ball , N. A. Baltzell , M. Battaglieri , V. Batourine , I. Bedlinskiy , A. S. Biselli , S. Boiarinov , W. J. Briscoe , J. Brock , W. K. Brooks , S. Bultmann , V. D. Burkert , Frank Thanh Cao , C. Carlin , D. S. Carman , A. Celentano , G. Charles , T. Chetry , G. Ciullo , L. Clark , L. Colaneri , P. L. Cole , M. Contalbrigo , O. Cortes , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , E. De Sanctis , M. Defurne , A. Deur , C. Djalali , G. Ddoge , R. Dupre , H. Egiyan , A. El Alaoui , L. El Fassi , L. Elouadrhiri , P. Eugenio , G. Fedotov , S. Fegan , R. Fersch , A. Filippi , J. A. Fleming , T. A. Forest , A. Fradi , M. Garcon , Y. Ghandilyan , G. P. Gilfoyle , K. L. Giovanetti , F. X. Girod , C. Gleason , W. Gohn , E. Golovatch , R. W. Gothe , M. Guidal , N. Guler , L. Guo , H. Hakobyan , C. Hanretty , N. Harrison , M. Hattawy , D. Heddle , K. Hicks , G. Hollis , M. Holtrop , S. M. Hughes , Y. Ilieva , D. G. Ireland , B. S. Ishkhanov , E. L. Isupov , D. Jenkins , H. Jiang , K. Joo , S. Joosten , D. Keller , G. Khachatryan , M. Khachatryan , M. Khandaker , A. Kim , W. Kim , A. Klein , F. J. Klein , V. Kubarovsky , S. V. Kuleshov , L. Lanza , P. Lenisa , K. Livingston , H. Y. Lu , I . J . D. MacGregor , N. Markov , M. Mayer , M. E. McCracken , B. McKinnon , C. A. Meyer , T. Mineeva , M. Mirazita , V. Mokeev , R. A. Montgomery , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , L. A. Net , S. Niccolai , G. Niculescu , I. Niculescu , M. Osipenko , A. I. Ostrovidov , R. Paremuzyan , K. Park , E. Pasyuk , E. Phelps , W. Phelps , J. Pierce , S. Pisano , O. Pogorelko , J. W. Price , Y. Prok , D. Protopopescu , B. A. Raue , M. Ripani , D. Riser , A. Rizzo , G. Rosner , P. Rossi , F. Sabatie , C. Salgado , R. A. Schumacher , E. Seder , Y. G. Sharabian , A. Simonyan , Iu. Skorodumina , G. D. Smith , D. I. Sober , D. Sokhan , N. Sparveris , I. Stankovic , S. Strauch , M. Taiuti , M. Ungaro , H. Voskanyan , E. Voutier , N. K. Walford , D. P. Watts , X. Wei , L. B. Weinstein , M. H. Wood , N. Zachariou , J. Zhang , Z. W. Zhao

Design and Performance of the Spin Asymmetries of the Nucleon Experiment

The Spin Asymmetries of the Nucleon Experiment (SANE) performed inclusive, double-polarized electron scattering measurements of the proton at the Continuous Electron Beam Accelerator Facility at Jefferson Lab. A novel detector array…

Instrumentation and Detectors · Physics 2017-12-22 J. D. Maxwell , W. R. Armstrong , S. Choi , M. K. Jones , H. Kang , A. Liyanage , Z. -E. Meziani , J. Mulholland , L. Ndukum , O. A. Rondon , A. Ahmidouch , I. Albayrak , A. Asaturyan , O. Ates , H. Baghdasaryan , W. Boeglin , P. Bosted , E. Brash , J. Brock , C. Butuceanu , M. Bychkov , C. Carlin , P. Carter , C. Chen , J. -P. Chen , M. E. Christy , S. Covrig , D. Crabb , S. Danagoulian , A. Daniel , A. M. Davidenko , B. Davis , D. Day , W. Deconinck , A. Deur , J. Dunne , D. Dutta , L. El Fassi , M. Elaasar , C. Ellis , R. Ent , D. Flay , E. Frlez , D. Gaskell , O. Geagla , J. German , R. Gilman , T. Gogami , J. Gomez , Y. M. Goncharenko , O. Hashimoto , D. W. Higinbotham , T. Horn , G. M. Huber , M. Jones , N. Kalantarians , H. K. Kang , D. Kawama , C. Keith , C. Keppel , M. Khandaker , Y. Kim , P. M. King , M. Kohl , K. Kovacs , V. Kubarovsky , Y. Li , N. Liyanage , W. Luo , V. Mamyan , P. Markowitz , T. Maruta , D. Meekins , Y. M. Melnik , A. Mkrtchyan , H. Mkrtchyan , V. V. Mochalov , P. Monaghan , A. Narayan , S. N. Nakamura , Nuruzzaman , L. Pentchev , D. Pocanic , M. Posik , A. Puckett , X. Qiu , J. Reinhold , S. Riordan , J. Roche , B. Sawatzky , M. Shabestari , K. Slifer , G. Smith , L. Soloviev , P. Solvignon , V. Tadevosyan , L. Tang , A. N. Vasiliev , M. Veilleux , T. Walton , F. Wesselmann , S. A. Wood , H. Yao , Z. Ye , L. Zhu

Analyzing the nucleon spin in weak interaction processes at HERA energies

We investigate the possibility to measure the spin content carried by the different quark flavors in a nucleon by means of polarized deep inelastic scattering with $W^\pm$ exchange at HERA. Such measurements require a polarized proton beam.…

High Energy Physics - Phenomenology · Physics 2016-09-06 M. Maul , A. Schäfer

Sea quark polarization and semi-inclusive DIS data

We investigate the potential impact of forthcoming Jefferson Lab semi-inclusive polarized deep inelastic scattering proton measurements in the determination of the sea quark polarization in the nucleon by means of a next to leading order…

High Energy Physics - Phenomenology · Physics 2009-01-07 X. Jiang , G. A. Navarro , R. Sassot

Quark Flavor Tagging in Polarized Hadronic Processes

We describe a general approach to quark flavor tagging in polarized hadronic processes, with particular emphasis on semi-inclusive deep inelastic scattering. A formalism is introduced that allows one to relate chosen quark flavor…

High Energy Physics - Phenomenology · Physics 2009-12-30 J. M. Niczyporuk , E. E. W. Bruins

Observation of Beam Spin Asymmetries in the Process $e p \rightarrow e \pi^{+}\pi^{-}X$ with CLAS12

The observation of beam spin asymmetries in two-pion production in semi-inclusive deep inelastic scattering off an unpolarized proton target is reported. The data presented here were taken in the fall of 2018 with the CLAS12 spectrometer…

High Energy Physics - Experiment · Physics 2021-04-21 T. B. Hayward , C. Dilks , A. Vossen , H. Avakian , S. Adhikari , G. Angelini , M. Arratia , H. Atac , C. Ayerbe Gayoso , N. A. Baltzell , L. Barion , M. Battaglieri , I. Bedlinskiy , F. Benmokhtar , A. Bianconi , A. S. Biselli , M. Bondì , F. Bossù , S. Boiarinov , W. J. Briscoe , W. K. Brooks , D. Bulumulla , V. D. Burkert , D. S. Carman , J. C. Carvajal , A. Celentano , P. Chatagnon , T. Chetry , G. Ciullo , B. A. Clary , P. L. Cole , M. Contalbrigo , G. Costantini , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , M. Defurne , A. Deur , S. Diehl , C. Djalali , R. Dupre , M. Dugger , H. Egiyan , M. Ehrhart , A. El Alaoui , L. El Fassi , L. Elouadrhiri , S. Fegan , A. Filippi , T. A. Forest , G. Gavalian , G. P. Gilfoyle , F. X. Girod , D. I. Glazier , A. A. Golubenko , R. W. Gothe , Y. Gotra , K. A. Griffioen , M. Guidal , K. Hafidi , H. Hakobyan , M. Hattawy , F. Hauenstein , K. Hicks , A. Hobart , M. Holtrop , D. G. Ireland , E. L. Isupov , H. S. Jo , K. Joo , S. Joosten , D. Keller , M. Khachatryan , A. Khanal , A. Kim , W. Kim , A. Kripko , V. Kubarovsky , S. E. Kuhn , L. Lanza , M. Leali , S. Lee , P. Lenisa , K. Livingston , I. J. D. MacGregor , D. Marchand , N. Markov , L. Marsicano , V. Mascagna , B. McKinnon , Z. E. Meziani , M. Mirazita , V. Mokeev , A Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , P. Naidoo , S. Nanda , K. Neupane , S. Niccolai , G. Niculescu , T. R. O'Connell , M. Osipenko , M. Paolone , L. L. Pappalardo , R. Paremuzyan , E. Pasyuk , W. Phelps , O. Pogorelko , Y. Prok , B. A. Raue , M. Ripani , J. Ritman , A. Rizzo , P. Rossi , J. Rowley , F. Sabatié , C. Salgado , A. Schmidt , E. P. Segarra , Y. G. Sharabian , U. Shrestha , D. Sokhan , O. Soto , N. Sparveris , S. Stepanyan , I. I. Strakovsky , S. Strauch , A. Thornton , N. Tyler , R. Tyson , M. Ungaro , L. Venturelli , H. Voskanyan , E. Voutier , D. P. Watts , K. Wei , X. Wei , M. H. Wood , B. Yale , N. Zachariou , J. Zhang

Future Polarised DIS Fixed Target Experiments

New experiments in polarised deep inelastic scattering will mainly concentrate on the measurement of semi-inclusive asymmetries. Especially, the upgraded HERMES experiment at DESY and the newly build COMPASS experiment at CERN will…

High Energy Physics - Experiment · Physics 2009-10-31 Eva-Maria Kabuss

Flavor decomposition of the sea quark helicity distributions in the nucleon from semi-inclusive deep-inelastic scattering

Double-spin asymmetries of semi-inclusive cross sections for the production of identified pions and kaons have been measured in deep-inelastic scattering of polarized positrons on a polarized deuterium target. Five helicity distributions…

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

Probing gluon helicity with heavy flavor at the EIC

We propose a new measurement of the heavy flavor hadron double spin asymmetry in deep-inelastic scattering at a future Electron-Ion Collider (EIC) to constrain the polarized gluon distribution function inside the proton. Statistical…

High Energy Physics - Experiment · Physics 2022-01-03 Daniele Paolo Anderle , Xin Dong , Felix Hekhorn , Matthew Kelsey , Sooraj Radhakrishnan , Ernst Sichtermann , Lei Xia , Hongxi Xing , Feng Yuan , Yuxiang Zhao

Transverse Spin Structure of the Nucleon through Target Single Spin Asymmetry in Semi-Inclusive Deep-Inelastic $(e,e^\prime \pi^\pm)$ Reaction at Jefferson Lab

Jefferson Lab (JLab) 12 GeV energy upgrade provides a golden opportunity to perform precision studies of the transverse spin and transverse-momentum-dependent structure in the valence quark region for both the proton and the neutron. In…

High Energy Physics - Phenomenology · Physics 2011-04-14 H. Gao , L. Gamberg , J. -P. Chen , X. Qian , Y. Qiang , M. Huang , A. Afanasev , M. Anselmino , H. Avakian , G. Cates , E. Chudakov , E. Cisbani , C. de Jager , F. Garibaldi , B. T. Hu , X. Jiang , K. S. Kumar , X. M. Li , H. J. Lu , Z. -E. Meziani , B. -Q. Ma , Y. J. Mao , J. -C. Peng , A. Prokudin , M. Schlegel , P. Souder , Z. G. Xiao , Y. Ye , L. Zhu

Spin Physics

We review the current situation in polarized scattering experiments. We describe the theoretical interpretation of inclusive deep inelastic processes, the current experimental situation and perturbative analyses which extract structure…

High Energy Physics - Phenomenology · Physics 2008-11-26 Richard D. Ball , Hugh A. McL. Tallini

Polarized lepton nucleon scattering - summary of the experimental spin sessions at DIS 99

This paper summarizes the contributions to the experimental sessions on polarized lepton nucleon scattering at the DIS 99 workshop. Results are reported about the flavor decomposition of the quark polarization, a first direct measurement of…

High Energy Physics - Experiment · Physics 2009-10-31 Michael Duren