Physics Letters B (Sep 2017)
First measurement of the Sivers asymmetry for gluons using SIDIS data
- 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. Badełek,
- 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. Büchele,
- 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. Dünnweber,
- M. Dziewiecki,
- A. Efremov,
- P.D. Eversheim,
- W. Eyrich,
- M. Faessler,
- A. Ferrero,
- M. Finger,
- M. Finger, jr.,
- 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. Grabmüller,
- 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. Jörg,
- 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. Königsmann,
- I. Konorov,
- V.F. Konstantinov,
- A.M. Kotzinian,
- O.M. Kouznetsov,
- M. Krämer,
- 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. Matoušek,
- 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. Nový,
- 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. Pešek,
- 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,
- M. Roskot,
- 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. Schönning,
- 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,
- A. Vauth,
- 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
Affiliations
- C. Adolph
- Universität Erlangen-Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- M. Aghasyan
- Trieste Section of INFN, 34127 Trieste, Italy
- R. Akhunzyanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M.G. Alexeev
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- G.D. Alexeev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Amoroso
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- V. Andrieux
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- N.V. Anfimov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- V. Anosov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Antoshkin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- K. Augsten
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- W. Augustyniak
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- A. Austregesilo
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- C.D.R. Azevedo
- University of Aveiro, Dept. of Physics, 3810-193 Aveiro, Portugal
- B. Badełek
- University of Warsaw, Faculty of Physics, 02-093 Warsaw, Poland
- F. Balestra
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- M. Ball
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- J. Barth
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- R. Beck
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- Y. Bedfer
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- J. Bernhard
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- K. Bicker
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- E.R. Bielert
- CERN, 1211 Geneva 23, Switzerland
- R. Birsa
- Trieste Section of INFN, 34127 Trieste, Italy
- M. Bodlak
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- P. Bordalo
- LIP, 1000-149 Lisbon, Portugal
- F. Bradamante
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- C. Braun
- Universität Erlangen-Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- A. Bressan
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- M. Büchele
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- W.-C. Chang
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- C. Chatterjee
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- M. Chiosso
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- I. Choi
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- S.-U. Chung
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- A. Cicuttin
- Abdus Salam ICTP, 34151 Trieste, Italy
- M.L. Crespo
- Abdus Salam ICTP, 34151 Trieste, Italy
- Q. Curiel
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- S. Dalla Torre
- Trieste Section of INFN, 34127 Trieste, Italy
- S.S. Dasgupta
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- S. Dasgupta
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- O.Yu. Denisov
- Torino Section of INFN, 10125 Turin, Italy
- L. Dhara
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- S.V. Donskov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- N. Doshita
- Yamagata University, Yamagata 992-8510, Japan
- Ch. Dreisbach
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- V. Duic
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- W. Dünnweber
- M. Dziewiecki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A. Efremov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- P.D. Eversheim
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- W. Eyrich
- Universität Erlangen-Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- M. Faessler
- A. Ferrero
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- M. Finger
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- M. Finger, jr.
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- H. Fischer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- C. Franco
- LIP, 1000-149 Lisbon, Portugal
- N. du Fresne von Hohenesche
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- J.M. Friedrich
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- V. Frolov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- E. Fuchey
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- F. Gautheron
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- O.P. Gavrichtchouk
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- S. Gerassimov
- Lebedev Physical Institute, 119991 Moscow, Russia
- J. Giarra
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- F. Giordano
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- I. Gnesi
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- M. Gorzellik
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- S. Grabmüller
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- A. Grasso
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- M. Grosse Perdekamp
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- B. Grube
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- T. Grussenmeyer
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- A. Guskov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- F. Haas
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- D. Hahne
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- G. Hamar
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- D. von Harrach
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- F.H. Heinsius
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- R. Heitz
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- F. Herrmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- N. Horikawa
- Nagoya University, 464 Nagoya, Japan
- N. d'Hose
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- C.-Y. Hsieh
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- S. Huber
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- S. Ishimoto
- Yamagata University, Yamagata 992-8510, Japan
- A. Ivanov
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- Yu. Ivanshin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- T. Iwata
- Yamagata University, Yamagata 992-8510, Japan
- V. Jary
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- R. Joosten
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- P. Jörg
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- E. Kabuß
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- A. Kerbizi
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- B. Ketzer
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- G.V. Khaustov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- Yu.A. Khokhlov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- Yu. Kisselev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- F. Klein
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- K. Klimaszewski
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- J.H. Koivuniemi
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- V.N. Kolosov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- K. Kondo
- Yamagata University, Yamagata 992-8510, Japan
- K. Königsmann
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- I. Konorov
- Lebedev Physical Institute, 119991 Moscow, Russia
- V.F. Konstantinov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- A.M. Kotzinian
- Torino Section of INFN, 10125 Turin, Italy
- O.M. Kouznetsov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Krämer
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- P. Kremser
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- F. Krinner
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- Z.V. Kroumchtein
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Y. Kulinich
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- F. Kunne
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- K. Kurek
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- R.P. Kurjata
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A.A. Lednev
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- A. Lehmann
- Universität Erlangen-Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- M. Levillain
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- S. Levorato
- Trieste Section of INFN, 34127 Trieste, Italy
- Y.-S. Lian
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- J. Lichtenstadt
- Tel Aviv University, School of Physics and Astronomy, 69978 Tel Aviv, Israel
- R. Longo
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- A. Maggiora
- Torino Section of INFN, 10125 Turin, Italy
- A. Magnon
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- N. Makins
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- N. Makke
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- G.K. Mallot
- CERN, 1211 Geneva 23, Switzerland
- B. Marianski
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- A. Martin
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- J. Marzec
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- J. Matoušek
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- H. Matsuda
- Yamagata University, Yamagata 992-8510, Japan
- T. Matsuda
- University of Miyazaki, Miyazaki 889-2192, Japan
- G.V. Meshcheryakov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Meyer
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- W. Meyer
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- Yu.V. Mikhailov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- M. Mikhasenko
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- E. Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- N. Mitrofanov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- Y. Miyachi
- Yamagata University, Yamagata 992-8510, Japan
- A. Nagaytsev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- F. Nerling
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- D. Neyret
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- J. Nový
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- W.-D. Nowak
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- G. Nukazuka
- Yamagata University, Yamagata 992-8510, Japan
- A.S. Nunes
- LIP, 1000-149 Lisbon, Portugal
- A.G. Olshevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- I. Orlov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Ostrick
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- D. Panzieri
- Torino Section of INFN, 10125 Turin, Italy
- B. Parsamyan
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- S. Paul
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- J.-C. Peng
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- F. Pereira
- University of Aveiro, Dept. of Physics, 3810-193 Aveiro, Portugal
- M. Pešek
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- D.V. Peshekhonov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- N. Pierre
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- S. Platchkov
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- J. Pochodzalla
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- V.A. Polyakov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- J. Pretz
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- M. Quaresma
- LIP, 1000-149 Lisbon, Portugal
- C. Quintans
- LIP, 1000-149 Lisbon, Portugal
- S. Ramos
- LIP, 1000-149 Lisbon, Portugal
- C. Regali
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- G. Reicherz
- Universität Bochum, Institut für Experimentalphysik, 44780 Bochum, Germany
- C. Riedl
- University of Illinois at Urbana-Champaign, Dept. of Physics, Urbana, IL 61801-3080, USA
- M. Roskot
- Charles University in Prague, Faculty of Mathematics and Physics, 18000 Prague, Czech Republic
- N.S. Rogacheva
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- D.I. Ryabchikov
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- A. Rybnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Rychter
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- R. Salac
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- V.D. Samoylenko
- State Scientific Center Institute for High Energy Physics of National Research Center ‘Kurchatov Institute’, 142281 Protvino, Russia
- A. Sandacz
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- C. Santos
- Trieste Section of INFN, 34127 Trieste, Italy
- S. Sarkar
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- I.A. Savin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- T. Sawada
- Academia Sinica, Institute of Physics, Taipei 11529, Taiwan
- G. Sbrizzai
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- P. Schiavon
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- K. Schmidt
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- H. Schmieden
- Universität Bonn, Physikalisches Institut, 53115 Bonn, Germany
- K. Schönning
- CERN, 1211 Geneva 23, Switzerland
- E. Seder
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- A. Selyunin
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- L. Silva
- LIP, 1000-149 Lisbon, Portugal
- L. Sinha
- Matrivani Institute of Experimental Research & Education, Calcutta-700 030, India
- S. Sirtl
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- M. Slunecka
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- J. Smolik
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- A. Srnka
- Institute of Scientific Instruments, AS CR, 61264 Brno, Czech Republic
- D. Steffen
- CERN, 1211 Geneva 23, Switzerland
- M. Stolarski
- LIP, 1000-149 Lisbon, Portugal
- O. Subrt
- CERN, 1211 Geneva 23, Switzerland
- M. Sulc
- Technical University in Liberec, 46117 Liberec, Czech Republic
- H. Suzuki
- Yamagata University, Yamagata 992-8510, Japan
- A. Szabelski
- University of Trieste, Dept. of Physics, 34127 Trieste, Italy
- T. Szameitat
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- P. Sznajder
- National Centre for Nuclear Research, 00-681 Warsaw, Poland
- S. Takekawa
- University of Turin, Dept. of Physics, 10125 Turin, Italy
- M. Tasevsky
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- S. Tessaro
- Trieste Section of INFN, 34127 Trieste, Italy
- F. Tessarotto
- Trieste Section of INFN, 34127 Trieste, Italy
- F. Thibaud
- IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- A. Thiel
- Universität Bonn, Helmholtz-Institut für Strahlen- und Kernphysik, 53115 Bonn, Germany
- F. Tosello
- Torino Section of INFN, 10125 Turin, Italy
- V. Tskhay
- Lebedev Physical Institute, 119991 Moscow, Russia
- S. Uhl
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- A. Vauth
- CERN, 1211 Geneva 23, Switzerland
- J. Veloso
- University of Aveiro, Dept. of Physics, 3810-193 Aveiro, Portugal
- M. Virius
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- J. Vondra
- Czech Technical University in Prague, 16636 Prague, Czech Republic
- S. Wallner
- Technische Universität München, Physik Dept., 85748 Garching, Germany
- T. Weisrock
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- M. Wilfert
- Universität Mainz, Institut für Kernphysik, 55099 Mainz, Germany
- J. ter Wolbeek
- Universität Freiburg, Physikalisches Institut, 79104 Freiburg, Germany
- K. Zaremba
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- P. Zavada
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Zavertyaev
- Lebedev Physical Institute, 119991 Moscow, Russia
- E. Zemlyanichkina
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- N. Zhuravlev
- Joint Institute for Nuclear Research, 141980 Dubna, Moscow region, Russia
- M. Ziembicki
- Warsaw University of Technology, Institute of Radioelectronics, 00-665 Warsaw, Poland
- A. Zink
- Universität Erlangen-Nürnberg, Physikalisches Institut, 91054 Erlangen, Germany
- DOI
- https://doi.org/10.1016/j.physletb.2017.07.018
- Journal volume & issue
-
Vol. 772,
no. C
pp. 854 – 864
Abstract
The Sivers function describes the correlation between the transverse spin of a nucleon and the transverse motion of its partons. For quarks, it was studied in previous measurements of the azimuthal asymmetry of hadrons produced in semi-inclusive deep inelastic scattering of leptons off transversely polarised nucleon targets, and it was found to be non-zero. In this letter the evaluation of the Sivers asymmetry for gluons is presented. The contribution of the photon–gluon fusion subprocess is enhanced by requiring two high transverse-momentum hadrons. The analysis method is based on a Monte Carlo simulation that includes three hard processes: photon–gluon fusion, QCD Compton scattering and the leading-order virtual-photon absorption process. The Sivers asymmetries of the three processes are simultaneously extracted using the LEPTO event generator and a neural network approach. The method is applied to samples of events containing at least two hadrons with large transverse momentum from the COMPASS data taken with a 160 GeV/c muon beam scattered off transversely polarised deuterons and protons. With a significance of about two standard deviations, a negative value is obtained for the gluon Sivers asymmetry. The result of a similar analysis for a Collins-like asymmetry for gluons is consistent with zero.
Keywords
