CERN Accelerating science

Article
Report number arXiv:2312.17379 ; CERN-EP-2023-307
Title Final COMPASS results on the transverse-spin-dependent azimuthal asymmetries in the pion-induced Drell-Yan process
Author(s)

Alexeev, G.D. (Unlisted) ; Alexeev, M.G. (INFN, Turin) ; Alice, C. (INFN, Turin) ; Amoroso, A. (INFN, Turin) ; Andrieux, V. (Illinois U., Urbana) ; Anosov, V. (Unlisted) ; Augsten, K. (Prague, Tech. U.) ; Augustyniak, W. (NCBJ, Warsaw) ; Azevedo, C.D.R. (Aveiro U.) ; Badelek, B. (Warsaw U.) ; Barth, J. (Bonn U., HISKP) ; Beck, R. (Bonn U., HISKP) ; Beckers, J. (Munich, Tech. U.) ; Bedfer, Y. (IRFU, Saclay) ; Bernhard, J. (CERN) ; Bodlak, M. (Charles U.) ; Bradamante, F. (INFN, Trieste) ; Bressan, A. (INFN, Trieste) ; Chang, W.-C. (Taiwan, Inst. Phys.) ; Chatterjee, C. (INFN, Trieste) ; Chiosso, M. (INFN, Turin) ; Chumakov, A.G. (Unlisted) ; Chung, S.-U. (Munich, Tech. U. ; Yerevan Phys. Inst.) ; Cicuttin, A. (INFN, Trieste ; ICTP, Trieste) ; Correia, P.M.M. (Aveiro U.) ; Crespo, M.L. (INFN, Trieste ; ICTP, Trieste) ; D'Ago, D. (INFN, Trieste) ; Dalla Torre, S. (INFN, Trieste) ; Dasgupta, S.S. (Calcutta U.) ; Dasgupta, S. (INFN, Trieste) ; Delcarro, F. (INFN, Turin) ; Denisenko, I. (Unlisted) ; Denisov, O.Yu. (INFN, Turin) ; Donskov, S.V. (Unlisted) ; Doshita, N. (Yamagata U.) ; Dreisbach, Ch. (Munich, Tech. U.) ; Dünnweber, W. (Yerevan Phys. Inst.) ; Dusaev, R.R. (Unlisted) ; Ecker, D. (Munich, Tech. U.) ; Eremeev, D. (Unlisted) ; Faccioli, P. (LIP, Lisbon) ; Faessler, M. (Yerevan Phys. Inst.) ; Finger, M., jr. (Charles U.) ; Fischer, H. (Freiburg U.) ; Flöthner, K.J. (Bonn U., HISKP) ; Florian, W. (INFN, Trieste ; ICTP, Trieste) ; Friedrich, J.M. (Munich, Tech. U.) ; Frolov, V. (Unlisted ; CERN) ; Ordòñez, L.G. Garcia (INFN, Trieste ; ICTP, Trieste) ; Gautheron, F. (Ruhr U., Bochum ; Illinois U., Urbana) ; Gavrichtchouk, O.P. (Unlisted) ; Gerassimov, S. (Unlisted ; Munich, Tech. U.) ; Giarra, J. (Mainz U., Inst. Kernphys.) ; Giordano, D. (INFN, Turin) ; Grasso, A. (INFN, Turin) ; Gridin, A. (Unlisted) ; Grosse Perdekamp, M. (Illinois U., Urbana) ; Grube, B. (Munich, Tech. U.) ; Grüner, M. (Bonn U., HISKP) ; Guskov, A. (Unlisted) ; Haas, P. (Munich, Tech. U.) ; von Harrach, D. (Mainz U., Inst. Kernphys.) ; Heitz, R. (Illinois U., Urbana) ; Hoffmann, M. (Bonn U., HISKP) ; d'Hose, N. (IRFU, Saclay) ; Hsieh, C.-Y. (Taiwan, Inst. Phys.) ; Huber, S. (Munich, Tech. U.) ; Ishimoto, S. (Yamagata U.) ; Ivanov, A. (Unlisted) ; Iwata, T. (Yamagata U.) ; Jary, V. (Prague, Tech. U.) ; Joosten, R. (Bonn U., HISKP) ; Kabuß, E. (Mainz U., Inst. Kernphys.) ; Kaspar, F. (Munich, Tech. U.) ; Kerbizi, A. (INFN, Trieste) ; Ketzer, B. (Bonn U., HISKP) ; Khatun, A. (IRFU, Saclay) ; Khaustov, G.V. (Unlisted) ; Klein, F. (Bonn U.) ; Koivuniemi, J.H. (Ruhr U., Bochum ; Illinois U., Urbana) ; Kolosov, V.N. (Unlisted) ; Kondo Horikawa, K. (Yamagata U.) ; Konorov, I. (Unlisted ; Munich, Tech. U.) ; Konstantinov, V.F. (Unlisted) ; Korzenev, A.Yu. (Unlisted) ; Kotzinian, A.M. (Yerevan Phys. Inst. ; INFN, Turin) ; Kouznetsov, O.M. (Unlisted) ; Koval, A. (NCBJ, Warsaw) ; Kral, Z. (Charles U.) ; Krinner, F. (Munich, Tech. U.) ; Kunne, F. (IRFU, Saclay) ; Kurek, K. (NCBJ, Warsaw) ; Kurjata, R.P. (Warsaw U. of Tech.) ; Kveton, A. (Charles U.) ; Lavickova, K. (Prague, Tech. U.) ; Levorato, S. (CERN ; INFN, Trieste) ; Lian, Y.-S. (Taiwan, Inst. Phys.) ; Lichtenstadt, J. (Tel Aviv U.) ; Lin, P.-J. (Taiwan, Natl. Central U.) ; Longo, R. (Illinois U., Urbana) ; Lyubovitskij, V.E. (Unlisted) ; Maggiora, A. (INFN, Turin) ; Magnon, A. (Calcutta U.) ; Makke, N. (INFN, Trieste) ; Mallot, G.K. (CERN ; Freiburg U.) ; Maltsev, A. (Unlisted) ; Martin, A. (INFN, Trieste) ; Marzec, J. (Warsaw U. of Tech.) ; Matoušek, J. (Charles U.) ; Matsuda, T. (Miyazaki U.) ; Mattson, G. (Illinois U., Urbana) ; Pires, C. Menezes (LIP, Lisbon) ; Metzger, F. (Bonn U., HISKP) ; Meyer, M. (Illinois U., Urbana ; IRFU, Saclay) ; Meyer, W. (Ruhr U., Bochum) ; Mikhailov, Yu.V. (Unlisted) ; Mikhasenko, M. (LMU Munich (main)) ; Mitrofanov, E. (Unlisted) ; Miura, D. (Yamagata U.) ; Miyachi, Y. (Yamagata U.) ; Molina, R. (INFN, Trieste ; ICTP, Trieste) ; Moretti, A. (INFN, Trieste) ; Nagaytsev, A. (Unlisted) ; Neyret, D. (IRFU, Saclay) ; Niemiec, M. (Warsaw U.) ; Nový, J. (Prague, Tech. U.) ; Nowak, W.-D. (Mainz U., Inst. Kernphys.) ; Nukazuka, G. (Yamagata U.) ; Olshevsky, A.G. (Unlisted) ; Ostrick, M. (Mainz U., Inst. Kernphys.) ; Panzieri, D. (INFN, Turin ; Yerevan Phys. Inst.) ; Parsamyan, B. (Yerevan Phys. Inst. ; INFN, Turin ; CERN) ; Paul, S. (Munich, Tech. U.) ; Pekeler, H. (Bonn U., HISKP) ; Peng, J.-C. (Illinois U., Urbana) ; Pešek, M. (Charles U.) ; Peshekhonov, D.V. (Unlisted) ; Pešková, M. (Charles U.) ; Platchkov, S. (IRFU, Saclay) ; Pochodzalla, J. (Mainz U., Inst. Kernphys.) ; Polyakov, V.A. (Unlisted) ; Quaresma, M. (LIP, Lisbon) ; Quintans, C. (LIP, Lisbon) ; Reicherz, G. (Ruhr U., Bochum) ; Riedl, C. (Illinois U., Urbana) ; Ryabchikov, D.I. (Unlisted ; Munich, Tech. U.) ; Rychter, A. (Warsaw U. of Tech.) ; Rymbekova, A. (Unlisted) ; Samoylenko, V.D. (Unlisted) ; Sandacz, A. (NCBJ, Warsaw) ; Sarkar, S. (Calcutta U.) ; Savada, T. (Taiwan, Inst. Phys.) ; Savin, I.A. (Unlisted) ; Sbrizzai, G. (INFN, Trieste) ; Schmieden, H. (Bonn U.) ; Selyunin, A. (Unlisted) ; Sharko, K. (Unlisted) ; Sinha, L. (Calcutta U.) ; Spülbeck, D. (Bonn U., HISKP) ; Srnka, A. (Inst. Sci. Instruments, Brno) ; Stolarski, M. (LIP, Lisbon) ; Sulc, M. (Liberec Tech. U.) ; Suzuki, H. (Yamagata U.) ; Tessaro, S. (INFN, Trieste) ; Tessarotto, F. (INFN, Trieste) ; Thiel, A. (Bonn U., HISKP) ; Tosello, F. (INFN, Turin) ; Townsend, A. (Illinois U., Urbana) ; Triloki, T. (INFN, Trieste) ; Tskhay, V. (Unlisted) ; Valinoti, B. (INFN, Trieste ; ICTP, Trieste) ; Veit, B.M. (Mainz U., Inst. Kernphys.) ; Veloso, J.F.C.A. (Aveiro U.) ; Ventura, B. (IRFU, Saclay) ; Vijayakumar, A. (Illinois U., Urbana) ; Virius, M. (Prague, Tech. U.) ; Wagner, M. (Bonn U., HISKP) ; Wallner, S. (Munich, Tech. U.) ; Zaremba, K. (Warsaw U. of Tech.) ; Zavertyaev, M. (Unlisted) ; Zemko, M. (Charles U. ; Prague, Tech. U.) ; Zemlyanichkina, E. (Unlisted) ; Ziembicki, M. (Warsaw U. of Tech.)

Publication 2024-08-14
Imprint 2023-12-28
Number of pages 8
In: Phys. Rev. Lett. 133 (2024) 071902
DOI 10.1103/PhysRevLett.133.071902 (publication)
Subject category hep-ph ; Particle Physics - Phenomenology ; hep-ex ; Particle Physics - Experiment
Accelerator/Facility, Experiment CERN SPS ; NA58
Abstract The COMPASS Collaboration performed measurements of the Drell-Yan process in 2015 and 2018 using a 190 GeV/c $\pi^{-}$ beam impinging on a transversely polarised ammonia target. Combining the data of both years, we present final results on the amplitudes of the five azimuthal modulations in the dimuon production cross section. Three of these transverse-spin-dependent azimuthal asymmetries (TSAs) probe the nucleon leading-twist Sivers, transversity, and pretzelosity transverse-momentum dependent (TMD) parton distribution functions (PDFs). The other two are induced by subleading effects. These TSAs provide unique new inputs for the study of the nucleon TMD PDFs and their universality properties. In particular, the Sivers TSA observed in this measurement is consistent with the fundamental QCD prediction of a sign change of naive time-reversal-odd TMD PDFs when comparing the Drell-Yan process with semi-inclusive measurements of deep inelastic scattering. Also, within the context of model predictions, the observed transversity TSA is consistent with the expectation of a sign change for the Boer-Mulders function.
Copyright/License preprint: (License: arXiv nonexclusive-distrib 1.0)
publication: © 2024 authors (License: CC BY 4.0), sponsored by SCOAP³



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