Related papers: Comparing extractions of Sivers functions

Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons

A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the…

High Energy Physics - Experiment · Physics 2020-07-16 HERMES Collaboration , A. Airapetian , N. Akopov , Z. Akopov , E. C. Aschenauer , W. Augustyniak , R. Avakian , A. Bacchetta , S. Belostotski , V. Bryzgalov , G. P. Capitani , E. Cisbani , G. Ciullo , M. Contalbrigo , W. Deconinck , R. De Leo , E. De Sanctis , M. Diefenthaler , P. Di Nezza , M. Düren , G. Elbakian , F. Ellinghaus , A. Fantoni , L. Felawka , G. Gavrilov , V. Gharibyan , Y. Holler , A. Ivanilov , H. E. Jackson , S. Joosten , R. Kaiser , G. Karyan , E. Kinney , A. Kisselev , V. Kozlov , P. Kravchenko , L. Lagamba , L. Lapikás , P. Lenisa , W. Lorenzon , S. I. Manaenkov , B. Marianski , H. Marukyan , Y. Miyachi , A. Movsisyan , V. Muccifora , Y. Naryshkin , A. Nass , G. Nazaryan , W. -D. Nowak , L. L. Pappalardo , P. E. Reimer , A. R. Reolon , C. Riedl , K. Rith , G. Rosner , A. Rostomyan , J. Rubin , D. Ryckbosch , A. Schäfer , G. Schnell , B. Seitz , T. -A. Shibata , V. Shutov , M. Statera , A. Terkulov , M. Tytgat , Y. Van Haarlem , C. Van Hulse , D. Veretennikov , I. Vilardi , S. Yaschenko , D. Zeiler , B. Zihlmann , P. Zupranski

Sivers effect and the single spin asymmetry A_N in p(transv. pol.) p --> h X processes

The single spin asymmetry A_N, for large P_T single inclusive particle production in p(transv. pol.) p collisions, is considered within a generalised parton model and a transverse momentum dependent factorisation scheme. The focus is on the…

High Energy Physics - Phenomenology · Physics 2013-09-27 M. Anselmino , M. Boglione , U. D'Alesio , S. Melis , F. Murgia , A. Prokudin

Transversity and inclusive two-pion production

A model for dihadron fragmentation functions is briefly outlined, that describes the fragmentation of a quark in two unpolarized hadrons. The parameters are tuned to the output of the PYTHIA event generator for two-hadron semi-inclusive…

High Energy Physics - Phenomenology · Physics 2008-11-26 Marco Radici

Towards a model independent extraction of the Boer-Mulders function

At present, the Boer-Mulders function for a given quark flavour has been extracted from data on semi-inclusive deep inelastic scattering using the simplifying, but theoretically inconsistent, assumption that it is proportional to the Sivers…

High Energy Physics - Phenomenology · Physics 2020-08-17 E. Christova , D. Kotlorz , E. Leader

HERMES measurements of Collins and Sivers asymmetries from a transversely polarised hydrogen target

Azimuthal single-spin asymmetries (SSA) in semi-inclusive electroproduction of pi-mesons and charged K-mesons in deep-inelastic scattering of positrons and electrons on a transversely polarised hydrogen target were observed. Significant SSA…

High Energy Physics - Experiment · Physics 2007-06-19 Markus Diefenthaler

First measurement of the Sivers asymmetry for gluons from SIDIS data

The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. It was extracted from measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep…

High Energy Physics - Experiment · Physics 2017-09-13 C. Adolph , 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 , C. Braun , A. Bressan , M. Buechele , W. -C. Chang , C. Chatterjee , M. Chiosso , I. Choi , S. -U. Chung , A. Cicuttin , M. L. Crespo , Q. Curiel , S. Dalla Torre , S. S. Dasgupta , S. Dasgupta , O. Yu. Denisov , L. Dhara , S. V. Donskov , N. Doshita , Ch. Dreisbach , V. Duic , W. Duennweber , M. Dziewiecki , A. Efremov , P. D. Eversheim , W. Eyrich , 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 , S. Grabmueller , A. Grasso , M. Grosse Perdekamp , B. Grube , T. Grussenmeyer , A. Guskov , F. Haas , 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 , K. Klimaszewski , J. H. Koivuniemi , V. N. Kolosov , K. Kondo , K. Koenigsmann , I. Konorov , V. F. Konstantinov , A. M. Kotzinian , O. M. Kouznetsov , M. Kraemer , P. Kremser , F. Krinner , Z. V. Kroumchtein , Y. Kulinich , F. Kunne , K. Kurek , R. P. Kurjata , A. A. Lednev , A. Lehmann , M. Levillain , S. Levorato , Y. -S. Lian , J. Lichtenstadt , R. Longo , A. Maggiora , A. Magnon , N. Makins , N. Makke , G. K. Mallot , 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. 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 , 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 , M. Roskot , 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 , S. Takekawa , M. Tasevsky , S. Tessaro , F. Tessarotto , F. Thibaud , A. Thiel , F. Tosello , V. Tskhay , S. Uhl , J. Veloso , M. Virius , J. Vondra , S. Wallner , T. Weisrock , M. Wilfert , J. ter Wolbeek , K. Zaremba , P. Zavada , M. Zavertyaev , E. Zemlyanichkina , N. Zhuravlev , M. Ziembicki , A. Zink

Sivers Effect and Transverse Single Spin Asymmetry in $e+p^\uparrow \to e+J/\psi+X$

We discuss the possibility of using electroproduction of $J/\psi $ as a probe of gluon Sivers function by measuring single spin asymmetry (SSA) in experiments with transversely polarized protons and electron beams. We estimate SSA for JLab,…

High Energy Physics - Phenomenology · Physics 2015-03-19 Rohini M. Godbole , Anuradha Misra , Asmita Mukherjee , Vaibhav S. Rawoot

Sivers function in constituent quark models

A formalism to evaluate the Sivers function, developed for calculations in constituent quark models, is applied to the Isgur-Karl model. A non-vanishing Sivers asymmetry, with opposite signs for the u and d flavor, is found; the Burkardt…

High Energy Physics - Phenomenology · Physics 2017-08-23 S. Scopetta , A. Courtoy , F. Fratini , V. Vento

Beam Single-Spin Asymmetry in Semi-Inclusive Deep Inelastic Scattering

We calculate, in a model, the beam spin asymmetry in semi-inclusive jet production in deep inelastic scattering. This twist-3, $T$-odd observable is non-zero due to final state strong interactions. With reasonable choices for the…

High Energy Physics - Phenomenology · Physics 2014-11-18 Andrei V. Afanasev , Carl E. Carlson

Towards a first estimate of the gluon Sivers function from $A_N$ data in $pp$ collisions at RHIC

Within a generalized parton model approach, with inclusion of spin and intrinsic transverse momentum effects, we show how the latest, highly precise, midrapidity data on the transverse single spin asymmetry measured in $pp\to\pi^0\, X$ by…

High Energy Physics - Phenomenology · Physics 2015-12-10 U. D'Alesio , F. Murgia , C. Pisano

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

Semi-Inclusive Deep Inelastic Scattering and Bessel-Weighted Asymmetries

We consider the cross section in Fourier space, conjugate to the outgoing hadron's transverse momentum, where convolutions of transverse momentum dependent parton distribution functions and fragmentation functions become simple products.…

High Energy Physics - Phenomenology · Physics 2015-06-03 Leonard Gamberg , Daniel Boer , Bernhard Musch , Alexei Prokudin

ECCE Sensitivity Studies for Single Hadron Transverse Single Spin Asymmetry Measurements

We performed feasibility studies for various single transverse spin measurements that are related to the Sivers effect, transversity and the tensor charge, and the Collins fragmentation function. The processes studied include semi-inclusive…

High Energy Physics - Experiment · Physics 2023-02-01 R. Seidl , A. Vladimirov , D. Pitonyak , A. Prokudin , J. K. Adkins , Y. Akiba , A. Albataineh , M. Amaryan , I. C. Arsene , C. Ayerbe Gayoso , J. Bae , X. Bai , M. D. Baker , M. Bashkanov , R. Bellwied , F. Benmokhtar , V. Berdnikov , J. C. Bernauer , F. Bock , W. Boeglin , M. Borysova , E. Brash , P. Brindza , W. J. Briscoe , M. Brooks , S. Bueltmann , M. H. S. Bukhari , A. Bylinkin , R. Capobianco , W. -C. Chang , Y. Cheon , K. Chen , K. -F. Chen , K. -Y. Cheng , M. Chiu , T. Chujo , Z. Citron , E. Cline , E. Cohen , T. Cormier , Y. Corrales Morales , C. Cotton , J. Crafts , C. Crawford , S. Creekmore , C. Cuevas , J. Cunningham , G. David , C. T. Dean , M. Demarteau , S. Diehl , N. Doshita , R. Dupré , J. M. Durham , R. Dzhygadlo , R. Ehlers , L. El Fassi , A. Emmert , R. Ent , C. Fanelli , R. Fatemi , S. Fegan , M. Finger , M. Finger , J. Frantz , M. Friedman , I. Friscic , D. Gangadharan , S. Gardner , K. Gates , F. Geurts , R. Gilman , D. Glazier , E. Glimos , Y. Goto , N. Grau , S. V. Greene , A. Q. Guo , L. Guo , S. K. Ha , J. Haggerty , T. Hayward , X. He , O. Hen , D. W. Higinbotham , M. Hoballah , T. Horn , A. Hoghmrtsyan , P. -h. J. Hsu , J. Huang , G. Huber , A. Hutson , K. Y. Hwang , C. E. Hyde , M. Inaba , T. Iwata , H. S. Jo , K. Joo , N. Kalantarians , G. Kalicy , K. Kawade , S. J. D. Kay , A. Kim , B. Kim , C. Kim , M. Kim , Y. Kim , Y. Kim , E. Kistenev , V. Klimenko , S. H. Ko , I. Korover , W. Korsch , G. Krintiras , S. Kuhn , C. -M. Kuo , T. Kutz , J. Lajoie , D. Lawrence , S. Lebedev , H. Lee , J. S. H. Lee , S. W. Lee , Y. -J. Lee , W. Li , W. Li , X. Li , X. Li , Y. T. Liang , S. Lim , C. -H. Lin , D. X. Lin , K. Liu , M. X. Liu , K. Livingston , N. Liyanage , W. J. Llope , C. Loizides , E. Long , R. -S. Lu , Z. Lu , W. Lynch , D. Marchand , M. Marcisovsky , C. Markert , P. Markowitz , H. Marukyan , P. McGaughey , M. Mihovilovic , R. G. Milner , A. Milov , Y. Miyachi , A. Mkrtchyan , P. Monaghan , R. Montgomery , D. Morrison , A. Movsisyan , H. Mkrtchyan , A. Mkrtchyan , C. Munoz Camacho , M. Murray , K. Nagai , J. Nagle , I. Nakagawa , C. Nattrass , D. Nguyen , S. Niccolai , R. Nouicer , G. Nukazuka , M. Nycz , V. A. Okorokov , S. Orešić , J. D. Osborn , C. O'Shaughnessy , S. Paganis , Z Papandreou , S. F. Pate , M. Patel , C. Paus , G. Penman , M. G. Perdekamp , D. V. Perepelitsa , H. Periera da Costa , K. Peters , W. Phelps , E. Piasetzky , C. Pinkenburg , I. Prochazka , T. Protzman , M. L. Purschke , J. Putschke , J. R. Pybus , R. Rajput-Ghoshal , J. Rasson , B. Raue , K. Read , K. Røed , R. Reed , J. Reinhold , E. L. Renner , J. Richards , C. Riedl , T. Rinn , J. Roche , G. M. Roland , G. Ron , M. Rosati , C. Royon , J. Ryu , S. Salur , N. Santiesteban , R. Santos , M. Sarsour , J. Schambach , A. Schmidt , N. Schmidt , C. Schwarz , J. Schwiening , A. Sickles , P. Simmerling , S. Sirca , D. Sharma , Z. Shi , T. -A. Shibata , C. -W. Shih , S. Shimizu , U. Shrestha , K. Slifer , K. Smith , D. Sokhan , R. Soltz , W. Sondheim , J. Song , J. Song , I. I. Strakovsky , P. Steinberg , P. Stepanov , J. Stevens , J. Strube , P. Sun , X. Sun , K. Suresh , V. Tadevosyan , W. -C. Tang , S. Tapia Araya , S. Tarafdar , L. Teodorescu , D. Thomas , A. Timmins , L. Tomasek , N. Trotta , R. Trotta , T. S. Tveter , E. Umaka , A. Usman , H. W. van Hecke , C. Van Hulse , J. Velkovska , E. Voutier , P. K. Wang , Q. Wang , Y. Wang , Y. Wang , D. P. Watts , N. Wickramaarachchi , L. Weinstein , M. Williams , C. -P. Wong , L. Wood , M. H. Wood , C. Woody , B. Wyslouch , Z. Xiao , Y. Yamazaki , Y. Yang , Z. Ye , H. D. Yoo , M. Yurov , N. Zachariou , W. A. Zajc , J. Zhang , Y. Zhang , Y. X. Zhao , X. Zheng , P. Zhuang

Double transverse spin asymmetry in the $p^\uparrow\bar{p}^\uparrow$ Drell-Yan process from Sivers functions

We show that the transverse double spin asymmetry (DSA) in the Drell-Yan process contributed only from the Sivers functions can be picked out by the weighting function…

High Energy Physics - Phenomenology · Physics 2008-11-26 Zhun Lu , Bo-Qiang Ma , Ivan Schmidt

Sivers Asymmetry with QCD Evolution

We analyze the Sivers asymmetry in both Drell-Yan (DY) production and semi-inclusive deep inelastic scattering (SIDIS), while considering properly defined transverse momentum dependent parton distribution and fragmentation functions and…

High Energy Physics - Phenomenology · Physics 2015-11-10 Miguel G. Echevarria , Ahmad Idilbi , Zhong-Bo Kang , Ivan Vitev

Left-right asymmetry for pion and kaon production in the semi-inclusive deep inelastic scattering process

We analyze the left-right asymmetry in the semi-inclusive deep inelastic scattering (SIDIS) process without introducing any weighting functions. With the current theoretical understanding, we find that the Sivers effect plays a key role in…

High Energy Physics - Phenomenology · Physics 2014-11-20 Bo Sun , Jun She , Bing Zhang , Ya-Jun Mao , Bo-Qiang Ma

Sivers Effect in Dihadron Semi-Inclusive Deep Inelastic Scattering

The Sivers effect describes the correlation of the unpolarized parton's transverse momentum with the transverse spin of the nucleon. It manifests as a sine modulation of the cross section for single hadron semi-inclusive deep inelastic…

High Energy Physics - Phenomenology · Physics 2014-10-06 Aram Kotzinian , Hrayr H. Matevosyan , Anthony W. Thomas

Transversity Measurements at COMPASS

The measurement of transverse spin effects in semi-inclusive deep-inelastic scattering is an important part of the COMPASS physics program. From the analysis of the 2002-2004 data, new results for the transverse target spin asymmetry of…

High Energy Physics - Experiment · Physics 2008-12-18 COMPASS Collaboration , C. Schill

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

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