Related papers: Probing multigluon correlations through single spi…

Single spin asymmetries in ultra-peripheral $p^\uparrow A$ collisions

We suggest inclusive hadron production in ultra-peripheral proton-nucleus collisions (UPCs) $p^\uparrow A \to h AX$ as a new channel to investigate single spin asymmetries (SSAs), in particular, to test the assumed dominance of the…

High Energy Physics - Phenomenology · Physics 2018-12-05 Sanjin Benić , Yoshitaka Hatta

Twist-three Fragmentation Function Contribution to the Single Spin Asymmetry in pp Collisions

We study the twist-three fragmentation function contribution to the single transverse spin asymmetries in inclusive hadron production in pp collisions, pp->h+X. In particular, we evaluate the so-called derivative contribution which…

High Energy Physics - Phenomenology · Physics 2014-11-20 Zhongbo Kang , Feng Yuan , Jian Zhou

Spin Asymmetries in Squark and Gluino Production at Polarized Hadron Colliders

We study the production cross sections for squarks and gluinos in collision of longitudinally polarized hadrons. The corresponding polarized partonic cross sections are computed in leading order supersymmetric QCD. The resulting asymmetries…

High Energy Physics - Phenomenology · Physics 2009-11-10 T. Gehrmann , D. Maitre , D. Wyler

Azimuthal spin asymmetries in pion-polarized proton induced Drell-Yan process at COMPASS using holographic light-front QCD

We compute all the leading-twist azimuthal spin asymmetries in the pion-proton induced Drell-Yan process. These spin asymmetries arise from convolutions of the leading-twist transverse-momentum-dependent parton distributions (TMDs) of both…

High Energy Physics - Phenomenology · Physics 2024-11-14 Bheemsehan Gurjar , Chandan Mondal

Comparison of transverse single-spin asymmetries for forward $\pi^{0}$ production in polarized $pp$, $p\rm{Al}$ and $p\rm{Au}$ collisions at nucleon pair c.m. energy $\sqrt{s_{\mathrm{NN}}}= 200$ GeV

The STAR Collaboration reports a measurement of the transverse single-spin asymmetries, $A_{N}$, for neutral pions produced in polarized proton collisions with protons ($pp$), with aluminum nuclei ($p\rm{Al}$) and with gold nuclei…

Nuclear Experiment · Physics 2021-04-21 STAR Collaboration , J. Adam , L. Adamczyk , J. R. Adams , J. K. Adkins , G. Agakishiev , M. M. Aggarwal , Z. Ahammed , I. Alekseev , D. M. Anderson , A. Aparin , E. C. Aschenauer , M. U. Ashraf , F. G. Atetalla , A. Attri , G. S. Averichev , V. Bairathi , K. Barish , A. Behera , R. Bellwied , A. Bhasin , J. Bielcik , J. Bielcikova , L. C. Bland , I. G. Bordyuzhin , J. D. Brandenburg , A. V. Brandin , J. Butterworth , H. Caines , M. Calderón de la Barca Sánchez , D. Cebra , I. Chakaberia , P. Chaloupka , B. K. Chan , F-H. Chang , Z. Chang , N. Chankova-Bunzarova , A. Chatterjee , D. Chen , J. Chen , J. H. Chen , X. Chen , Z. Chen , J. Cheng , M. Cherney , M. Chevalier , S. Choudhury , W. Christie , X. Chu , H. J. Crawford , M. Csanád , M. Daugherity , T. G. Dedovich , I. M. Deppner , A. A. Derevschikov , L. Didenko , C. Dilks , X. Dong , J. L. Drachenberg , J. C. Dunlop , T. Edmonds , N. Elsey , J. Engelage , G. Eppley , S. Esumi , O. Evdokimov , A. Ewigleben , O. Eyser , R. Fatemi , S. Fazio , P. Federic , J. Fedorisin , C. J. Feng , Y. Feng , P. Filip , E. Finch , Y. Fisyak , A. Francisco , L. Fulek , C. A. Gagliardi , T. Galatyuk , F. Geurts , A. Gibson , K. Gopal , X. Gou , D. Grosnick , W. Guryn , A. I. Hamad , A. Hamed , S. Harabasz , J. W. Harris , S. He , W. He , X. H. He , Y. He , S. Heppelmann , S. Heppelmann , N. Herrmann , E. Hoffman , L. Holub , Y. Hong , S. Horvat , Y. Hu , H. Z. Huang , S. L. Huang , T. Huang , X. Huang , T. J. Humanic , P. Huo , G. Igo , D. Isenhower , W. W. Jacobs , C. Jena , A. Jentsch , Y. Ji , J. Jia , K. Jiang , S. Jowzaee , X. Ju , E. G. Judd , S. Kabana , M. L. Kabir , S. Kagamaster , D. Kalinkin , K. Kang , D. Kapukchyan , K. Kauder , H. W. Ke , D. Keane , A. Kechechyan , M. Kelsey , Y. V. Khyzhniak , D. P. Kikoła , C. Kim , B. Kimelman , D. Kincses , T. A. Kinghorn , I. Kisel , A. Kiselev , M. Kocan , L. Kochenda , D. D. Koetke , L. K. Kosarzewski , L. Kramarik , P. Kravtsov , K. Krueger , N. Kulathunga Mudiyanselage , L. Kumar , S. Kumar , R. Kunnawalkam Elayavalli , J. H. Kwasizur , R. Lacey , S. Lan , J. M. Landgraf , J. Lauret , A. Lebedev , R. Lednicky , J. H. Lee , Y. H. Leung , C. Li , C. Li , W. Li , W. Li , X. Li , Y. Li , Y. Liang , R. Licenik , T. Lin , Y. Lin , M. A. Lisa , F. Liu , H. Liu , P. Liu , P. Liu , T. Liu , X. Liu , Y. Liu , Z. Liu , T. Ljubicic , W. J. Llope , R. S. Longacre , N. S. Lukow , S. Luo , X. Luo , G. L. Ma , L. Ma , R. Ma , Y. G. Ma , N. Magdy , R. Majka , D. Mallick , S. Margetis , C. Markert , H. S. Matis , J. A. Mazer , N. G. Minaev , S. Mioduszewski , B. Mohanty , M. M. Mondal , I. Mooney , Z. Moravcova , D. A. Morozov , M. Nagy , J. D. Nam , Md. Nasim , K. Nayak , D. Neff , J. M. Nelson , D. B. Nemes , M. Nie , G. Nigmatkulov , T. Niida , L. V. Nogach , T. Nonaka , A. S. Nunes , G. Odyniec , A. Ogawa , S. Oh , V. A. Okorokov , B. S. Page , R. Pak , A. Pandav , Y. Panebratsev , B. Pawlik , D. Pawlowska , H. Pei , C. Perkins , L. Pinsky , R. L. Pintér , J. Pluta , J. Porter , M. Posik , N. K. Pruthi , M. Przybycien , J. Putschke , H. Qiu , A. Quintero , S. K. Radhakrishnan , S. Ramachandran , R. L. Ray , R. Reed , H. G. Ritter , O. V. Rogachevskiy , J. L. Romero , L. Ruan , J. Rusnak , N. R. Sahoo , H. Sako , S. Salur , J. Sandweiss , S. Sato , W. B. Schmidke , N. Schmitz , B. R. Schweid , F. Seck , J. Seger , M. Sergeeva , R. Seto , P. Seyboth , N. Shah , E. Shahaliev , P. V. Shanmuganathan , M. Shao , A. I. Sheikh , W. Q. Shen , S. S. Shi , Y. Shi , Q. Y. Shou , E. P. Sichtermann , R. Sikora , M. Simko , J. Singh , S. Singha , N. Smirnov , W. Solyst , P. Sorensen , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , M. Stefaniak , D. J. Stewart , M. Strikhanov , B. Stringfellow , A. A. P. Suaide , M. Sumbera , B. Summa , X. M. Sun , X. Sun , Y. Sun , Y. Sun , B. Surrow , D. N. Svirida , P. Szymanski , A. H. Tang , Z. Tang , A. Taranenko , T. Tarnowsky , J. H. Thomas , A. R. Timmins , D. Tlusty , M. Tokarev , C. A. Tomkiel , S. Trentalange , R. E. Tribble , P. Tribedy , S. K. Tripathy , O. D. Tsai , Z. Tu , T. Ullrich , D. G. Underwood , I. Upsal , G. Van Buren , J. Vanek , A. N. Vasiliev , I. Vassiliev , F. Videbæk , S. Vokal , S. A. Voloshin , F. Wang , G. Wang , J. S. Wang , P. Wang , Y. Wang , Y. Wang , Z. Wang , J. C. Webb , P. C. Weidenkaff , L. Wen , G. D. Westfall , H. Wieman , S. W. Wissink , R. Witt , Y. Wu , Z. G. Xiao , G. Xie , W. Xie , H. Xu , N. Xu , Q. H. Xu , Y. F. Xu , Y. Xu , Z. Xu , Z. Xu , C. Yang , Q. Yang , S. Yang , Y. Yang , Z. Yang , Z. Ye , Z. Ye , L. Yi , K. Yip , Y. Yu , H. Zbroszczyk , W. Zha , C. Zhang , D. Zhang , S. Zhang , S. Zhang , X. P. Zhang , Y. Zhang , Y. Zhang , Z. J. Zhang , Z. Zhang , Z. Zhang , J. Zhao , C. Zhong , C. Zhou , X. Zhu , Z. Zhu , M. Zurek , M. Zyzak

Single-spin asymmetries in the leptoproduction of transversely polarized $\Lambda$ hyperons

We analyze single-spin asymmetries (SSAs) in the leptoproduction of transversely polarized $\Lambda$ hyperons within the collinear twist-3 formalism. We calculate both the distribution and fragmentation terms in two different gauges…

High Energy Physics - Phenomenology · Physics 2015-05-20 K. Kanazawa , A. Metz , D. Pitonyak , M. Schlegel

Longitudinal Double-Spin Asymmetries for $\pi^{0}$s in the Forward Direction for 510 GeV Polarized $pp$ Collisions

The STAR Collaboration reports measurements of the longitudinal double-spin asymmetry, $A_{LL}$, for neutral pions produced at forward directions in polarized proton-proton collisions, at a center-of-mass energy of $510$ GeV. Results are…

High Energy Physics - Experiment · Physics 2018-09-12 J. Adam , L. Adamczyk , J. R. Adams , J. K. Adkins , G. Agakishiev , M. M. Aggarwal , Z. Ahammed , N. N. Ajitanand , I. Alekseev , D. M. Anderson , R. Aoyama , A. Aparin , D. Arkhipkin , E. C. Aschenauer , M. U. Ashraf , F. Atetalla , A. Attri , G. S. Averichev , X. Bai , V. Bairathi , K. Barish , A. J. Bassill , A. Behera , R. Bellwied , A. Bhasin , A. K. Bhati , J. Bielcik , J. Bielcikova , L. C. Bland , I. G. Bordyuzhin , J. D. Brandenburg , A. V. Brandin , D. Brown , J. Bryslawskyj , I. Bunzarov , J. Butterworth , H. Caines , M. Calderón de la Barca Sánchez , J. M. Campbell , D. Cebra , I. Chakaberia , P. Chaloupka , F-H. Chang , Z. Chang , N. Chankova-Bunzarova , A. Chatterjee , S. Chattopadhyay , J. H. Chen , X. Chen , X. Chen , J. Cheng , M. Cherney , W. Christie , G. Contin , H. J. Crawford , S. Das , T. G. Dedovich , I. M. Deppner , A. A. Derevschikov , L. Didenko , C. Dilks , X. Dong , J. L. Drachenberg , J. C. Dunlop , L. G. Efimov , N. Elsey , J. Engelage , G. Eppley , R. Esha , S. Esumi , O. Evdokimov , J. Ewigleben , O. Eyser , R. Fatemi , S. Fazio , P. Federic , P. Federicova , J. Fedorisin , P. Filip , E. Finch , Y. Fisyak , C. E. Flores , L. Fulek , C. A. Gagliardi , T. Galatyuk , F. Geurts , A. Gibson , D. Grosnick , D. S. Gunarathne , Y. Guo , A. Gupta , W. Guryn , A. I. Hamad , A. Hamed , A. Harlenderova , J. W. Harris , L. He , S. Heppelmann , S. Heppelmann , N. Herrmann , A. Hirsch , L. Holub , S. Horvat , X. Huang , B. Huang , S. L. Huang , H. Z. Huang , T. Huang , T. J. Humanic , P. Huo , G. Igo , W. W. Jacobs , A. Jentsch , J. Jia , K. Jiang , S. Jowzaee , E. G. Judd , S. Kabana , D. Kalinkin , K. Kang , D. Kapukchyan , K. Kauder , H. W. Ke , D. Keane , A. Kechechyan , D. P. Kikoła , C. Kim , T. A. Kinghorn , I. Kisel , A. Kisiel , L. Kochenda , L. K. Kosarzewski , A. F. Kraishan , L. Kramarik , L. Krauth , P. Kravtsov , K. Krueger , N. Kulathunga , S. Kumar , L. Kumar , J. Kvapil , J. H. Kwasizur , R. Lacey , J. M. Landgraf , J. Lauret , A. Lebedev , R. Lednicky , J. H. Lee , X. Li , C. Li , W. Li , Y. Li , Y. Liang , J. Lidrych , T. Lin , A. Lipiec , M. A. Lisa , F. Liu , P. Liu , H. Liu , Y. Liu , T. Ljubicic , W. J. Llope , M. Lomnitz , R. S. Longacre , X. Luo , S. Luo , G. L. Ma , Y. G. Ma , L. Ma , R. Ma , N. Magdy , R. Majka , D. Mallick , S. Margetis , C. Markert , H. S. Matis , O. Matonoha , D. Mayes , J. A. Mazer , K. Meehan , J. C. Mei , N. G. Minaev , S. Mioduszewski , D. Mishra , B. Mohanty , M. M. Mondal , I. Mooney , D. A. Morozov , Md. Nasim , J. D. Negrete , J. M. Nelson , D. B. Nemes , M. Nie , G. Nigmatkulov , T. Niida , L. V. Nogach , T. Nonaka , S. B. Nurushev , G. Odyniec , A. Ogawa , K. Oh , S. Oh , V. A. Okorokov , D. Olvitt , B. S. Page , R. Pak , Y. Panebratsev , B. Pawlik , H. Pei , C. Perkins , J. Pluta , J. Porter , M. Posik , N. K. Pruthi , M. Przybycien , J. Putschke , A. Quintero , S. K. Radhakrishnan , S. Ramachandran , R. L. Ray , R. Reed , H. G. Ritter , J. B. Roberts , O. V. Rogachevskiy , J. L. Romero , L. Ruan , J. Rusnak , O. Rusnakova , N. R. Sahoo , P. K. Sahu , S. Salur , J. Sandweiss , J. Schambach , A. M. Schmah , W. B. Schmidke , N. Schmitz , B. R. Schweid , F. Seck , J. Seger , M. Sergeeva , R. Seto , P. Seyboth , N. Shah , E. Shahaliev , P. V. Shanmuganathan , M. Shao , W. Q. Shen , F. Shen , S. S. Shi , Q. Y. Shou , E. P. Sichtermann , S. Siejka , R. Sikora , M. Simko , S. Singha , N. Smirnov , D. Smirnov , W. Solyst , P. Sorensen , H. M. Spinka , B. Srivastava , T. D. S. Stanislaus , D. J. Stewart , M. Strikhanov , B. Stringfellow , A. A. P. Suaide , T. Sugiura , M. Sumbera , B. Summa , Y. Sun , X. Sun , X. M. Sun , B. Surrow , D. N. Svirida , P. Szymanski , Z. Tang , A. H. Tang , A. Taranenko , T. Tarnowsky , J. H. Thomas , A. R. Timmins , D. Tlusty , T. Todoroki , M. Tokarev , C. A. Tomkiel , S. Trentalange , R. E. Tribble , P. Tribedy , S. K. Tripathy , O. D. Tsai , B. Tu , T. Ullrich , D. G. Underwood , I. Upsal , G. Van Buren , J. Vanek , A. N. Vasiliev , I. Vassiliev , F. Videbæk , S. Vokal , S. A. Voloshin , A. Vossen , G. Wang , Y. Wang , F. Wang , Y. Wang , J. C. Webb , L. Wen , G. D. Westfall , H. Wieman , S. W. Wissink , R. Witt , Y. Wu , Z. G. Xiao , G. Xie , W. Xie , Q. H. Xu , Z. Xu , J. Xu , Y. F. Xu , N. Xu , S. Yang , C. Yang , Q. Yang , Y. Yang , Z. Ye , Z. Ye , L. Yi , K. Yip , I. -K. Yoo , N. Yu , H. Zbroszczyk , W. Zha , Z. Zhang , L. Zhang , Y. Zhang , X. P. Zhang , J. Zhang , S. Zhang , S. Zhang , J. Zhang , J. Zhao , C. Zhong , C. Zhou , L. Zhou , Z. Zhu , X. Zhu , M. Zyzak

Single spin asymmetries in hadron-hadron collisions

We study weighted azimuthal single spin asymmetries in hadron-hadron scattering using the diagrammatic approach at leading order and assuming factorization. The effects of the intrinsic transverse momenta of the partons are taken into…

High Energy Physics - Phenomenology · Physics 2009-11-11 A. Bacchetta , C. J. Bomhof , P. J. Mulders , F. Pijlman

Gauge invariance, causality and gluonic poles

We explore the electromagnetic gauge invariance of the hadron tensor of the Drell-Yan process with one transversely polarized hadron. The special role is played by the contour gauge for gluon fields. The prescription for the gluonic pole in…

High Energy Physics - Phenomenology · Physics 2014-11-20 I. V. Anikin , O. V. Teryaev

Twist-3 Single-Spin Asymmetry for SIDIS and its Azimuthal Structure

We derive the complete twist-3 single-spin-dependent cross section for semi-inclusive DIS, $ep^\uparrow\to e\pi X$, associated with the complete set of the twist-3 quark-gluon correlation functions in the transversely polarized nucleon,…

High Energy Physics - Phenomenology · Physics 2009-08-24 Yuji Koike , Kazuhiro Tanaka

Diffractive charged meson pair production

We investigate the possibility to measure the nonforward gluon distribution function by means of diffractively produced \pi^+\pi^- and K^+K^- pairs in polarized lepton nucleon scattering. The resulting cross sections are small and are…

High Energy Physics - Phenomenology · Physics 2011-07-19 B. Lehmann-Dronke , M. Maul , S. Schaefer , E. Stein , A. Schäfer

Twist-Four Distributions in a Transversely-Polarized Nucleon and the Drell-Yan Process

The twist-four quark and gluon distributions in a transversely polarized nucleon are identified and relations among them are discussed by using QCD equations of motion. Their contribution, at the order of ${\cal O} \left( 1/Q^2 \right)$, to…

High Energy Physics - Phenomenology · Physics 2009-10-22 Pevrez Hoodbhoy , Xiangdong Xi

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

Drell-Yan Lepton-Pair-Jet Correlation in pA collisions

In this paper, we numerically study the forward correlations between the lepton-pair and associated hadrons in Drell-Yan process in pA collisions. Using the present knowledge of the dipole gluon distribution from the modified…

High Energy Physics - Phenomenology · Physics 2012-07-17 Anna Staśto , Bo-Wen Xiao , David Zaslavsky

Gluon Polarisation in the Nucleon and Longitudinal Double Spin Asymmetries from Open Charm Muoproduction

The gluon polarisation in the nucleon has been determined by detecting charm production via D0 meson decay to charged K and pi in polarised muon scattering off a longitudinally polarised deuteron target. The data were taken by the COMPASS…

High Energy Physics - Experiment · Physics 2009-07-30 COMPASS Collaboration , M. Alekseev

Transversity and the Polarized Drell-Yan Process in $p\bar{p} \to \mu ^{+}\mu ^{-}X$

Estimates are given for the double spin asymmetry in lepton-pair production from collisions of transversely polarized protons and antiprotons for the kinematics of the recently proposed PAX experiment at GSI on the basis of predictions for…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. V. Efremov , O. V. Teryaev , P. Zavada

Spin asymmetries for events with high p_T hadrons in DIS and an evaluation of the gluon polarization

We present a measurement of the longitudinal spin cross section asymmetry for deep inelastic muon-nucleon interactions with two high transverse momentum hadrons in the final state. Two methods of event classification are used to increase…

High Energy Physics - Experiment · Physics 2007-05-23 SMC Collaboration , B. Adeva

Polarized and transversity GPDs in kaon leptoproduction

We study the kaon leptoproduction on the basis of the handbag approach. We consider the leading-twist contribution together with the transversity twist-3 effects which were found to be important in the description of pseudo-scalar meson…

High Energy Physics - Phenomenology · Physics 2012-11-26 S. V. Goloskokov

Twist-3 Single-Spin Asymmetries in Semi-Inclusive Deep-Inelastic Scattering

The single spin asymmetries for a longitudinally polarized lepton beam or a longitudinally polarized nucleon target in semi-inclusive deep-inelastic scattering are twist-3 observables. We study these asymmetries in a simple diquark…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. Metz , M. Schlegel

Contribution superstring Z' boson on the polarization effects in proton-proton collisions

In this work we investigate the single- and the double- spin asymmetries at the collisions of polarized protons $pp \to (\gamma*, Z^0,Z')+X within the scope of QCD, electroweak interaction and superstring E_6 theory. The helicity amplitude…

High Energy Physics - Phenomenology · Physics 2009-11-10 R. Kh. Muradov , A. I. Ahmadov