Related papers: Transverse Spin Effects at COMPASS

Polarised Drell-Yan results from COMPASS

The COMPASS experiment at CERN is one of the leading experiments studying the nucleon spin structure. Until 2012 the Parton Distribution Functions and the Transverse Momentum Dependent Parton Distribution Functions (TMDs) were extensively…

High Energy Physics - Experiment · Physics 2018-04-26 Celso Franco

Probing the transverse spin of quarks in deep inelastic scattering

To identify some way to measure the quark transversity, this thesis analyzes one-particle and two-particle inclusive deep inelastic scattering, where one and two of the outgoing hadrons are detected in coincidence with the electron. It is…

High Energy Physics - Phenomenology · Physics 2009-09-29 A. Bacchetta

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

Double Spin Asymmetry in Semi-inclusive Deep Inelastic Scattering

We shortly review the various methods suggested for determining the transversity function. Among such methods, we consider especially those based on semi-inclusive deep inelastic scattering. In the framework of this kind of reactions, we…

High Energy Physics - Phenomenology · Physics 2009-11-07 Elvio Di Salvo

Sivers effect at Hermes, Compass and Clas12

Single spin asymmetries in semi-inclusive deep-inelastic scattering off transversely polarized targets give information on, among other fascinating effects, a pseudo time-reversal odd parton distribution function, the 'Sivers function'. In…

High Energy Physics - Phenomenology · Physics 2009-09-29 S. Arnold , A. V. Efremov , K. Goeke , M. Schlegel , P. Schweitzer

Multidimensional, high precision measurements of beam single spin asymmetries in semi-inclusive $\pi^{+}$ electroproduction off protons in the valence region

High precision measurements of the polarized electron beam-spin asymmetry in semi-inclusive deep inelastic scattering (SIDIS) from the proton have been performed using a 10.6~GeV incident electron beam and the CLAS12 spectrometer at…

High Energy Physics - Experiment · Physics 2022-02-23 S. Diehl , A. Kim , G. Angelini , K. Joo , S. Adhikari , M. Amaryan , M. Arratia , H. Atac , H. Avakian , C. Ayerbe Gayoso , N. A. Baltzell , L. Barion , S. Bastami , M. Battaglieri , I. Bedlinskiy , F. Benmokhtar , A. Bianconi , A. S. Biselli , M. Bondi , F. Bossu , S. Boiarinov , K. -T. Brinkmann , W. J. Briscoe , W. Brooks , D. Bulumulla , V. D. Burkert , D. S. Carman , J. C. Carvajal , A. Celentano , P. Chatagnon , T. Chetry , G. Ciullo , L. Clark , B. A. Clary , P. L. Cole , M. Contalbrigo , G. Costantini , V. Crede , A. D'Angelo , N. Dashyan , R. De Vita , M. Defurne , A. Deur , C. Dilks , C. Djalali , M. Dugger , R. Dupre , M. Ehrhart , A. El Alaoui , L. El Fassi , L. Elouadrhiri , S. Fegan , A. Filippi , T. 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 , T. B. Hayward , D. Heddle , K. Hicks , A. Hobart , M. Holtrop , C. E. Hyde , D. G. Ireland , E. L. Isupov , H. S. Jo , R. Johnston , S. Joosten , D. Keller , M. Khachatryan , A. Khanal , W. Kim , A. Kripko , V. Kubarovsky , S. E. Kuhn , L. Lanza , M. Leali , S. Lee , P. Lenisa , K. Livingston , Z. Lu , I. J. D. MacGregor , D. Marchand , N. Markov , L. Marsicano , V. Mascagna , B. McKinnon , Z. E. Meziani , R. G. Milner , T. Mineeva , M. Mirazita , V. Mokeev , P. Moran , A. Movsisyan , C. Munoz Camacho , P. Nadel-Turonski , P. Naidoo , 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 , A. Prokudin , B. A. Raue , M. Ripani , J. Ritman , A. Rizzo , C. D. Roberts , P. Rossi , J. Rowley , F. Sabatie , C. Salgado , A. Schmidt , E. P. Segarra , Y. G. Sharabian , U. Shrestha , P. Simmerling , D. Sokhan , O. Soto , N. Sparveris , S. Stepanyan , P. Stoler , I. I. Strakovsky , S. Strauch , K. Tezgin , A. Thornton , N. Tyler , R. Tyson , M. Ungaro , L. Venturelli , H. Voskanyan , A. Vossen , E. Voutier , D. P. Watts , K. Wei , X. Wei , S. -S. Xu , B. Yale , N. Zachariou , J. Zhang

Single-spin asymmetries in inclusive deep inelastic scattering and multiparton correlations in the nucleon

Transverse single-spin asymmetries in inclusive deep inelastic lepton-nucleon scattering can be generated through multiphoton exchange between the leptonic and the hadronic part of the process. Here we consider the two-photon exchange, and…

High Energy Physics - Phenomenology · Physics 2015-06-11 A. Metz , D. Pitonyak , A. Schaefer , M. Schlegel , W. Vogelsang , J. Zhou

Transeverse-Momentum Subtraction for Semi-Inclusive Deep-Inelastic Scattering

Semi-Inclusive Deep-Inelastic Scattering provides unique access to the three-dimensional momentum and spin structure of the proton, enabling precise studies of parton dynamics and hadronization in QCD. We present a transverse-momentum…

High Energy Physics - Phenomenology · Physics 2026-02-09 Jun Gao , Hai Tao Li , Hua Xing Zhu , Yu Jiao Zhu

Partonic Transverse Motion in Unpolarized Semi-Inclusive Deep Inelastic Scattering

We analyse the role of partonic transverse motion in unpolarized Semi-Inclusive Deep Inelastic Scattering (SIDIS) processes. Imposing appropriate kinematical conditions, we find some constraints which fix an upper limit to the range of…

High Energy Physics - Phenomenology · Physics 2011-07-25 M. Boglione , S. Melis , A. Prokudin

Measurement of azimuthal asymmetries in SIDIS on unpolarized protons

The COMPASS Collaboration is measuring the asymmetries in the azimuthal distributions of positive and negative hadrons produced in Deep Inelastic Scattering (DIS) on unpolarized protons. The data have been collected in 2016 and 2017 with a…

High Energy Physics - Experiment · Physics 2019-01-08 Andrea Moretti

The Beam Single Spin Asymmetry in Semi-inclusive Deep Inelastic Scattering

We study the beam single spin asymmetry in semi-inclusive hadron production in deep inelastic scattering in at order 1/Q. There are two competing contributions: the leading order transverse momentum dependent parton distribution…

High Energy Physics - Phenomenology · Physics 2009-11-10 Feng Yuan

Transversity in Exclusive and Inclusive Processes

Both meson photoproduction and semi-inclusive deep inelastic scattering can potentially probe transversity properties of the nucleon. We explore how that potential can be realized dynamically. The role of rescattering in both exclusive and…

High Energy Physics - Phenomenology · Physics 2009-11-07 Leonard Gamberg , Gary R. Goldstein , Karo A. Oganessyan

Probing transversity by measuring $\Lambda$ polarisation in SIDIS

Based on the observation of sizeable target-transverse-spin asymmetries in single-hadron and hadron-pair production in Semi-Inclusive measurements of Deep Inelastic Scattering (SIDIS), the chiral-odd transversity quark distribution…

High Energy Physics - Experiment · Physics 2021-12-15 M. G. Alexeev , G. D. Alexeev , A. Amoroso , V. Andrieux , V. Anosov , K. Augsten , W. Augustyniak , C. D. R. Azevedo , B. Badelek , F. Balestra , M. Ball , J. Barth , R. Beck , Y. Bedfer , J. Berenguer Antequera , J. Bernhard , M. Bodlak , F. Bradamante , A. Bressan , V. E. Burtsev , W. -C. Chang , C. Chatterjee , M. Chiosso , A. G. Chumakov , S. -U. Chung , A. Cicuttin , P. M. M. Correia , M. L. Crespo , D. D'Ago , S. Dalla Torre , S. S. Dasgupta , S. Dasgupta , I. Denisenko , O. Yu. Denisov , S. V. Donskov , N. Doshita , Ch. Dreisbach , W. Duennweber , R. R. Dusaev , A. Efremov , P. D. Eversheim , P. Faccioli , M. Faessler , A. Ferrero , M. Finger , M. Finger , H. Fischer , C. Franco , J. M. Friedrich , V. Frolov , L. G. Garcia Ordonez , F. Gautheron , O. P. Gavrichtchouk , S. Gerassimov , J. Giarra , I. Gnesi , D. Giordano , M. Gorzellik , A. Grasso , A. Gridin , M. Grosse Perdekamp , B. Grube , A. Guskov , D. von Harrach , R. Heitz , N. Horikawa , N. d'Hose , C. -Y. Hsieh , S. Huber , S. Ishimoto , A. Ivanov , T. Iwata , M. Jandek , T. Jary , R. Joosten , E. Kabuss , D. H. Kang , F. Kaspar , A. Kerbizi , B. Ketzer , G. V. Khaustov , Yu. A. Khokhlov , Yu. Kisselev , F. Klein , J. H. Koivuniemi , V. N. Kolosov , I. Konorov , V. F. Konstantinov , A. M. Kotzinian , O. M. Kouznetsov , A. Koval , Z. Kral , F. Krinner , Y. Kulinich , F. Kunne , K. Kurek , R. P. Kurjata , A. Kveton , K. Lavickova , S. Levorato , Y. -S. Lian , J. Lichtenstadt , P. -J. Lin , R. Longo , V. E. Lyubovitskij , A. Maggiora , A. Magnon , N. Makins , N. Makke , G. K. Mallot , A. Maltsev , S. A. Mamon , B. Marianski , A. Martin , J. Marzec , J. Matousek , T. Matsuda , G. Mattson , G. V. Meshcheryakov , M. Meyer , W. Meyer , Yu. V. Mikhailov , M. Mikhasenko , E. Mitrofanov , Y. Miyachi , A. Moretti , A. Nagaytsev , C. Naim , T. S. Negrini , D. Neyret , J. Novy , W. -D. Nowak , G. Nukazuka , A. S. Nunes , A. G. Olshevskiy , M. Ostrick , D. Panzieri , B. Parsamyan , S. Paul , H. Pekeler , J. -C. Peng , M. Pesek , D. V. Peshekhonov , M. Peskova , N. Pierre , S. Platchkov , J. Pochodzalla , V. A. Polyakov , J. Pretz , M. Quaresma , C. Quintans , G. Reicherz , C. Riedl , T. Rudnicki , D. I. Ryabchikov , A. Rymbekova , A. Rychter , V. D. Samoylenko , A. Sandacz , S. Sarkar , I. A. Savin , G. Sbrizzai , P. Schiavon , H. Schmieden , A. Selyunin , K. Sharko , L. Sinha , M. Slunecka , J. Smolik , F. Sozzi , A. Srnka , D. Steffen , M. Stolarski , O. Subrt , M. Sulc , H. Suzuki , P. Sznajder , S. Tessaro , F. Tessarotto , A. Thiel , J. Tomsa , F. Tosello , A. Townsend , V. Tskhay , S. Uhl , A. Vauth , B. M. Veit , J. Veloso , B. Ventura , A. Vidon , M. Virius , M. Wagner , S. Wallner , K. Zaremba , P. Zavada , M. Zavertyaev , M. Zemko , E. Zemlyanichkina , Y. Zhao , M. Ziembicki

Polarized Structure Functions and Spin Physics

Recent progress in the field of spin physics of high energy particle interactions is reviewed with particular emphasis on the spin structure functions as measured in polarized deep inelastic lepton-nucleon scattering (DIS). New measurements…

High Energy Physics - Experiment · Physics 2011-07-19 Uta Stosslein

Experimental investigation of transverse spin asymmetries in muon-p SIDIS processes: Collins asymmetries

The COMPASS Collaboration at CERN has measured the transverse spin azimuthal asymmetry of charged hadrons produced in semi-inclusive deep inelastic scattering using a 160 GeV positive muon beam and a transversely polarised NH_3 target. The…

High Energy Physics - Experiment · Physics 2015-06-05 C. Adolph , M. G. Alekseev , V. Yu. Alexakhin , Yu. Alexandrov , G. D. Alexeev , A. Amoroso , A. A. Antonov , A. Austregesilo , B. Badelek , F. Balestra , J. Barth , G. Baum , Y. Bedfer , J. Bernhard , R. Bertini , M. Bettinelli , K. Bicker , J. Bieling , R. Birsa , J. Bisplinghoff , P. Bordalo , F. Bradamante , C. Braun , A. Bravar , A. Bressan , E. Burtin , L. Capozza , M. Chiosso , S. U. Chung , A. Cicuttin , M. L. Crespo , S. Dalla Torre , S. Das , S. S. Dasgupta , S. Dasgupta , O. Yu. Denisov , L. Dhara , S. V. Donskov , N. Doshita , V. Duic , W. Duennweber , M. Dziewiecki , A. Efremov , C. Elia , P. D. Eversheim , W. Eyrich , M. Faessler , A. Ferrero , A. Filin , M. Finger , M. Finger , H. Fischer , C. Franco , N. du Fresne von Hohenesche , J. M. Friedrich , V. Frolov , R. Garfagnini , F. Gautheron , O. P. Gavrichtchouk , S. Gerassimov , R. Geyer , M. Giorgi , I. Gnesi , B. Gobbo , S. Goertz , S. Grabmueller , A. Grasso , B. Grube , R. Gushterski , A. Guskov , T. Guthoerl , F. Haas , D. von Harrach , F. H. Heinsius , F. Herrmann , C. Hess , F. Hinterberger , N. Horikawa , Ch. Hoeppner , N. d'Hose , S. Ishimoto , O. Ivanov , Yu. Ivanshin , T. Iwata , R. Jahn , V. Jary , P. Jasinski , R. Joosten , E. Kabuss , D. Kang , B. Ketzer , G. V. Khaustov , Yu. A. Khokhlov , Yu. Kisselev , F. Klein , K. Klimaszewski , S. Koblitz , J. H. Koivuniemi , V. N. Kolosov , K. Kondo , K. Koenigsmann , I. Konorov , V. F. Konstantinov , A. Korzenev , A. M. Kotzinian , O. Kouznetsov , M. Kraemer , Z. V. Kroumchtein , F. Kunne , K. Kurek , L. Lauser , A. A. Lednev , A. Lehmann , S. Levorato , J. Lichtenstadt , T. Liska , A. Maggiora , A. Magnon , N. Makke , G. K. Mallot , A. Mann , C. Marchand , A. Martin , J. Marzec , T. Matsuda , G. Meshcheryakov , W. Meyer , T. Michigami , Yu. V. Mikhailov , M. A. Moinester , A. Morreale , A. Mutter , A. Nagaytsev , T. Nagel , T. Negrini , F. Nerling , S. Neubert , D. Neyret , V. I. Nikolaenko , W. D. Nowak , A. S. Nunes , A. G. Olshevsky , M. Ostrick , A. Padee , R. Panknin , D. Panzieri , B. Parsamyan , S. Paul , E. Perevalova , G. Pesaro , D. V. Peshekhonov , G. Piragino , S. Platchkov , J. Pochodzalla , J. Polak , V. A. Polyakov , J. Pretz , M. Quaresma , C. Quintans , J. -F. Rajotte , S. Ramos , V. Rapatsky , G. Reicherz , A. Richter , E. Rocco , E. Rondio , N. S. Rossiyskaya , D. I. Ryabchikov , V. D. Samoylenko , A. Sandacz , M. G. Sapozhnikov , S. Sarkar , I. A. Savin , G. Sbrizzai , P. Schiavon , C. Schill , T. Schlueter , K. Schmidt , L. Schmitt , K. Schoenning , S. Schopferer , M. Schott , W. Schroeder , O. Yu. Shevchenko , L. Silva , L. Sinha , A. N. Sissakian , M. Slunecka , G. I. Smirnov , S. Sosio , F. Sozzi , A. Srnka , L. Steiger , M. Stolarski , M. Sulc , R. Sulej , H. Suzuki , P. Sznajder , S. Takekawa , J. Ter Wolbeek , S. Tessaro , F. Tessarotto , L. G. Tkatchev , S. Uhl , I. Uman , M. Vandenbroucke , M. Virius , N. V. Vlassov , L. Wang , M. Wilfert , R. Windmolders , W. Wislicki , H. Wollny , K. Zaremba , M. Zavertyaev , E. Zemlyanichkina , M. Ziembicki , N. Zhuravlev , A. Zvyagin

The spin structure of the nucleon in light-cone quark models

The quark spin densities related to generalized parton distributions in impact-parameter space and to transverse-momentum dependent parton distributions are reviewed within a light-cone quark model, with focus on the role of the different…

High Energy Physics - Phenomenology · Physics 2015-05-14 B. Pasquini , S. Boffi , P. Schweitzer

Constraining quark angular momentum through semi-inclusive measurements

The determination of quark angular momentum requires the knowledge of the generalized parton distribution E in the forward limit. We assume a connection between this function and the Sivers transverse-momentum distribution, based on model…

High Energy Physics - Phenomenology · Physics 2013-05-29 Alessandro Bacchetta , Marco Radici

Single Target-Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering on Transversely Polarized Nucleon Target

We use a new set of Collins functions to update a previous prediction on the azimuthal asymmetries of pion productions in semi-inclusive deep inelastic scattering (SIDIS) process on a transversely polarized nucleon target. We find that the…

High Energy Physics - Phenomenology · Physics 2008-11-26 Yang Huang , Jun She , Bo-Qiang Ma

Single Transverse Spin Asymmetry for Semi-Inclusive Deep Inelastic Scattering

Establishing the twist-3 formalsim for the single transverse spin asymmetry, we present a complete single-spin-dependent cross section for SIDIS, $ep^\uparrow\to e\pi X$, associated with the twist-3 distribution for the transversely…

High Energy Physics - Phenomenology · Physics 2008-11-26 Hisato Eguchi , Yuji Koike , Kazuhiro Tanaka

Kinematical contributions to the transverse asymmetry in semi-inclusive DIS

We discuss the contributions of the transverse spin component of the target to the double-spin asymmetries in semi-inclusive deep inelastic scattering of longitudinally polarized electrons off longitudinally polarized protons.

High Energy Physics - Phenomenology · Physics 2009-11-07 K. A. Oganessyan , P. J. Mulders , E. De Sanctis , L. S. Asilyan