@article{a7b23abb6038423e800fa929ce72103e,
title = "Measurement of PT-weighted Sivers asymmetries in leptoproduction of hadrons",
abstract = "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 trans-verse 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 po-larised proton target, we have evaluated two types of PT-weighted Sivers asymmetries, which are both proportional to the product of the first transverse moment of the Sivers function and of the fragmentation function. The results are compared to the standard unweighted Sivers asymmetries and used to extract the first transverse moments of the Sivers distributions for uand dquarks.",
author = "{The COMPASS Collaboration} and Alexeev, {M. G.} and Alexeev, {G. D.} and A. Amoroso and V. Andrieux and Anfimov, {N. V.} and V. Anosov and A. Antoshkin and K. Augsten and W. Augustyniak and Azevedo, {C. D.R.} and B. Bade{\l}ek and F. Balestra and M. Ball and J. Barth and V. Barone and R. Beck and Y. Bedfer and J. Bernhard and K. Bicker and Bielert, {E. R.} and M. Bodlak and P. Bordalo and F. Bradamante and A. Bressan and M. B{\"u}chele and Burtsev, {V. E.} and Chang, {W. C.} and C. Chatterjee and M. Chiosso and Chumakov, {A. G.} and Chung, {S. U.} and A. Cicuttin and Crespo, {M. L.} and S. DallaTorre and Dasgupta, {S. S.} and S. Dasgupta and Denisov, {O. Yu} and L. Dhara and Donskov, {S. V.} and N. Doshita and Ch Dreisbach and W. D{\"u}nnweberd and Dusaev, {R. R.} and M. Dziewiecki and A. Efremov and C. Elia and M. GrossePerdekamp and N. Makins and Peng, {J. C.} and C. Riedl",
note = "Funding Information: Supported by BMBF – Bundesministerium f{\"u}r Bildung und Forschung (Germany).Supported by FP7, HadronPhysics3, Grant 283286 (European Union).Supported by MEYS, Grant LG13031 (Czech Republic).Supported by B. Sen fund (India).Supported by CERN-RFBR Grant 12-02-91500.Supported by FCT – Funda{\c c}{\~a}o para a Ci{\^e}ncia e Tecnologia, COMPETE and QREN, Grants CERN/FP 116376/2010, 123600/2011 and CERN/FIS-NUC/0017/2015 (Portugal).Supported by MEXT and JSPS, Grants 18002006, 20540299, 18540281 and 26247032, the Daiko and Yamada Foundations (Japan).Supported by the DFG cluster of excellence {\textquoteleft}Origin and Structure of the Universe{\textquoteright} (www.universe-cluster.de) (Germany).Supported by the Ministry of Science and Technology (Taiwan).Supported by the Israel Academy of Sciences and Humanities (Israel).Supported by the Russian Federation program “Nauka” (Contract No. 0.1764.GZB.2017) (Russia).Supported by the National Science Foundation, Grant no. PHY-1506416 (USA).Supported by NCN, Grant 2017/26/M/ST2/00498 (Poland).Supported by the DFG Research Training Group Programmes 1102 and 2044 (Germany).Partially supported by “Fondi Ricerca Locale ex 60%” Universita' del Piemonte Orientale (Italy). Publisher Copyright: {\textcopyright} 2019 The Author.",
year = "2019",
month = mar,
doi = "10.1016/j.nuclphysb.2018.12.024",
language = "English (US)",
volume = "940",
pages = "34--53",
journal = "Nuclear Physics B",
issn = "0550-3213",
publisher = "Elsevier",
}