Measurement of PT-weighted Sivers asymmetries in leptoproduction of hadrons
- M.G. Alexeev
- G.D. Alexeev
- A. Amoroso
- V. Andrieux
- N.V. Anfimov
- V. Anosov
- A. Antoshkin
- K. Augsten
- W. Augustyniak
- C.D.R. Azevedo
- B. Badełek
- F. Balestra
- M. Ball
- J. Barth
- V. Barone
- R. Beck
- Y. Bedfer
- J. Bernhard
- K. Bicker
- E.R. Bielert
- M. Bodlak
- P. Bordalo
- F. Bradamante
- A. Bressan
- M. Büchele
- V.E. Burtsev
- W.-C. Chang
- C. Chatterjee
- M. Chiosso
- A.G. Chumakov
- S.-U. Chung
- A. Cicuttin
- M.L. Crespo
- S. Dalla Torre
- S.S. Dasgupta
- S. Dasgupta
- O.Yu. Denisov
- L. Dhara
- S.V. Donskov
- N. Doshita
- Ch. Dreisbach
- W. Dünnweber
- R.R. Dusaev
- M. Dziewiecki
- A. Efremov
- C. Elia
- P.D. Eversheim
- M. Faessler
- A. Ferrero
- M. Finger
- M. Finger, jr.
- H. Fischer
- C. Franco
- N. du Fresne von Hohenesche
- J.M. Friedrich
- V. Frolov
- F. Gautheron
- O.P. Gavrichtchouk
- S. Gerassimov
- J. Giarra
- I. Gnesi
- M. Gorzellik
- A. Grasso
- A. Gridin
- M. Grosse Perdekamp
- B. Grube
- A. Guskov
- D. Hahne
- G. Hamar
- D. von Harrach
- R. Heitz
- F. Herrmann
- N. Horikawa
- N. d'Hose
- C.-Y. Hsieh
- S. Huber
- S. Ishimoto
- A. Ivanov
- T. Iwata
- M. Jandek
- V. Jary
- R. Joosten
- P. Jörg
- K. Juraskova
- E. Kabuß
- F. Kaspar
- A. Kerbizi
- B. Ketzer
- G.V. Khaustov
- Yu.A. Khokhlov
- Yu. Kisselev
- F. Klein
- J.H. Koivuniemi
- V.N. Kolosov
- K. Kondo
- I. Konorov
- V.F. Konstantinov
- A.M. Kotzinian
- O.M. Kouznetsov
- Z. Kral
- M. Krämer
- F. Krinner
- Z.V. Kroumchtein
- Y. Kulinich
- F. Kunne
- K. Kurek
- R.P. Kurjata
- A. Kveton
- A.A. Lednev
- S. Levorato
- Y.-S. Lian
- J. Lichtenstadt
- R. Longo
- V.E. Lyubovitskij
- A. Maggiora
- A. Magnon
- N. Makins
- N. Makke
- G.K. Mallot
- S.A. Mamon
- B. Marianski
- A. Martin
- J. Marzec
- J. Matoušek
- T. Matsuda
- G.V. Meshcheryakov
- M. Meyer
- W. Meyer
- Yu.V. Mikhailov
- M. Mikhasenko
- E. Mitrofanov
- N. Mitrofanov
- Y. Miyachi
- A. Moretti
- A. Nagaytsev
- 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
- M. Pešková
- 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
- D.I. Ryabchikov
- A. Rybnikov
- A. Rychter
- R. Salac
- V.D. Samoylenko
- A. Sandacz
- S. Sarkar
- I.A. Savin
- T. Sawada
- G. Sbrizzai
- P. Schiavon
- H. Schmieden
- E. Seder
- A. Selyunin
- L. Silva
- L. Sinha
- S. Sirtl
- M. Slunecka
- J. Smolik
- F. Sozzi
- A. Srnka
- D. Steffen
- M. Stolarski
- O. Subrt
- M. Sulc
- H. Suzuki
- A. Szabelski
- T. Szameitat
- P. Sznajder
- M. Tasevsky
- S. Tessaro
- F. Tessarotto
- A. Thiel
- J. Tomsa
- F. Tosello
- V. Tskhay
- S. Uhl
- B.I. Vasilishin
- A. Vauth
- B.M. Veit
- J. Veloso
- A. Vidon
- M. Virius
- M. Wagner
- S. Wallner
- M. Wilfert
- K. Zaremba
- P. Zavada
- M. Zavertyaev
- Y. Zhao
- E. Zemlyanichkina
- M. Ziembicki
DOIAbstract
The transverse spin asymmetries measured in semi-inclusive leptoproduction of hadrons, when weighted with the hadron transverse momentum PT, allow for the extraction of important transverse-momentum-dependent distribution functions. In particular, the weighted Sivers asymmetries provide direct information on the Sivers function, which is a leading-twist distribution that arises from a correlation between the transverse momentum of an unpolarised quark in a transversely polarised nucleon and the spin of the nucleon. Using the high-statistics data collected by the COMPASS Collaboration in 2010 with a transversely polarised proton target, we have evaluated two types of PT-weighted Sivers asymmetries, which are both proportional to the product ...
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