Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

G. D. Alexeev; M. G. Alexeev; C. Alice; A. Amoroso; V. Andrieux; V. Anosov; K. Augsten; W. Augustyniak; C. D. R. Azevedo; B. Badelek; J. Barth; R. Beck; Y. Bedfer; J. Bernhard; M. Bodlak; F. Bradamante; C. Braun; A. Bressan; V. E. Burtsev; W. -C. Chang; C. Chatterjee; M. Chiosso; A. G. Chumakov; S. -U. Chung; A. Cicuttin; P. M. M. Correia; M. L. Crespo; D. D'Ago; S. Dalla Torre; S. S. Dasgupta; S. Dasgupta; F. Del Carro; I. Denisenko; O. Yu Denisov; S. V. Donskov; N. Doshita; Ch Dreisbach; W. Dünnweber; R. R. Dusaev; D. Ecker; A. Efremov; C. Elia; D. Eremeev; P. Faccioli; M. Faessler; M. Finger; M. Finger; H. Fischer; K. J. Flöthner; W. Florian; J. M. Friedrich; V. Frolov; L. G. Garcia Ordòñez; F. Gautheron; O. P. Gavrichtchouk; S. Gerassimov; J. Giarra; D. Giordano; M. Gorzellik; A. Grasso; A. Gridin; M. Grosse Perdekamp; B. Grube; M. Grüner; A. Guskov; D. von Harrach; M. Hoffmann; N. Horikawa; N. d'Hose; C. -Y. Hsieh; S. Huber; S. Ishimoto; A. Ivanov; T. Iwata; M. Jandek; V. Jary; R. Joosten; E. Kabuß; F. Kaspar; A. Kerbizi; B. Ketzer; A. Khatun; G. V. Khaustov; F. Klein; J. H. Koivuniemi; V. N. Kolosov; K. Kondo Horikawa; I. Konorov; V. F. Konstantinov; A. M. Korzenev; A. M. Kotzinian; O. M. Kouznetsov; A. Koval; Z. Kral; F. Krinner; F. Kunne; K. Kurek; R. P. Kurjata; A. Kveton; K. Lavickova; S. Levorato; Y. -S. Lian; J. Lichtenstadt; P. -J. Lin; R. Longo; V. E. Lyubovitskij; A. Maggiora; A. Magnon; N. Makins; N. Makke; G. K. Mallot; A. Maltsev; S. A. Mamon; A. Martin; J. Marzec; J. Matoušek; T. Matsuda; G. Mattson; C. Menezes Pires; F. Metzger; M. Meyer; W. Meyer; Yu V. Mikhailov; M. Mikhasenko; E. Mitrofanov; D. Miura; Y. Miyachi; R. Molina; A. Moretti; A. Nagaytsev; D. Neyret; M. Niemiec; J. Nový; W. -D. Nowak; G. Nukazuka; A. G. Olshevsky; M. Ostrick; Daniele PANZIERI; B. Parsamyan; S. Paul; H. Pekeler; J. -C. Peng; G. Pesaro; M. Pešek; D. V. Peshekhonov; M. Pešková; S. Platchkov; J. Pochodzalla; V. A. Polyakov; M. Quaresma; C. Quintans; G. Reicherz; C. Riedl; D. I. Ryabchikov; A. Rychter; A. Rymbekova; V. D. Samoylenko; A. Sandacz; S. Sarkar; I. A. Savin; G. Sbrizzai; P. Schiavon; H. Schmieden; A. Selyunin; K. Sharko; L. Sinha; M. Slunecka; F. Sozzi; D. Spülbeck; A. Srnka; M. Stolarski; O. Subrt; M. Sulc; H. Suzuki; S. Tessaro; F. Tessarotto; A. Thiel; J. Tomsa; F. Tosello; A. Townsend; T. Triloki; V. Tskhay; B. Valinoti; B. M. Veit; J. F. C. A. Veloso; B. Ventura; M. Virius; M. Wagner; S. Wallner; K. Zaremba; M. Zavertyaev; M. Zemko; E. Zemlyanichkina; M. Ziembicki

doi:10.1016/j.physletb.2023.138155

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

G. D. Alexeev, M. G. Alexeev, C. Alice, A. Amoroso, V. Andrieux, V. Anosov, K. Augsten, W. Augustyniak, C. D. R. Azevedo, B. Badelek, J. Barth, R. Beck, Y. Bedfer, J. Bernhard, M. Bodlak, F. Bradamante, C. Braun, A. Bressan, V. E. Burtsev, W. -C. ChangC. Chatterjee, M. Chiosso, A. G. Chumakov, S. -U. Chung, A. Cicuttin, P. M. M. Correia, M. L. Crespo, D. D'Ago, S. Dalla Torre, S. S. Dasgupta, S. Dasgupta, F. Del Carro, I. Denisenko, O. Yu Denisov, S. V. Donskov, N. Doshita, Ch Dreisbach, W. Dünnweber, R. R. Dusaev, D. Ecker, A. Efremov, C. Elia, D. Eremeev, P. Faccioli, M. Faessler, M. Finger, M. Finger, H. Fischer, K. J. Flöthner, W. Florian, J. M. Friedrich, V. Frolov, L. G. Garcia Ordòñez, F. Gautheron, O. P. Gavrichtchouk, S. Gerassimov, J. Giarra, D. Giordano, M. Gorzellik, A. Grasso, A. Gridin, M. Grosse Perdekamp, B. Grube, M. Grüner, A. Guskov, D. von Harrach, M. Hoffmann, N. Horikawa, N. d'Hose, C. -Y. Hsieh, S. Huber, S. Ishimoto, A. Ivanov, T. Iwata, M. Jandek, V. Jary, R. Joosten, E. Kabuß, F. Kaspar, A. Kerbizi, B. Ketzer, A. Khatun, G. V. Khaustov, F. Klein, J. H. Koivuniemi, V. N. Kolosov, K. Kondo Horikawa, I. Konorov, V. F. Konstantinov, A. M. Korzenev, A. M. Kotzinian, O. M. Kouznetsov, A. Koval, Z. Kral, F. Krinner, F. Kunne, K. Kurek, R. P. Kurjata, A. Kveton, K. Lavickova, S. Levorato, Y. -S. Lian, J. Lichtenstadt, P. -J. Lin, R. Longo, V. E. Lyubovitskij, A. Maggiora, A. Magnon, N. Makins, N. Makke, G. K. Mallot, A. Maltsev, S. A. Mamon, A. Martin, J. Marzec, J. Matoušek, T. Matsuda, G. Mattson, C. Menezes Pires, F. Metzger, M. Meyer, W. Meyer, Yu V. Mikhailov, M. Mikhasenko, E. Mitrofanov, D. Miura, Y. Miyachi, R. Molina, A. Moretti, A. Nagaytsev, D. Neyret, M. Niemiec, J. Nový, W. -D. Nowak, G. Nukazuka, A. G. Olshevsky, M. Ostrick, Daniele PANZIERI, B. Parsamyan, S. Paul, H. Pekeler, J. -C. Peng, G. Pesaro, M. Pešek, D. V. Peshekhonov, M. Pešková, S. Platchkov, J. Pochodzalla, V. A. Polyakov, M. Quaresma, C. Quintans, G. Reicherz, C. Riedl, D. I. Ryabchikov, A. Rychter, A. Rymbekova, V. D. Samoylenko, A. Sandacz, S. Sarkar, I. A. Savin, G. Sbrizzai, P. Schiavon, H. Schmieden, A. Selyunin, K. Sharko, L. Sinha, M. Slunecka, F. Sozzi, D. Spülbeck, A. Srnka, M. Stolarski, O. Subrt, M. Sulc, H. Suzuki, S. Tessaro, F. Tessarotto, A. Thiel, J. Tomsa, F. Tosello, A. Townsend, T. Triloki, V. Tskhay, B. Valinoti, B. M. Veit, J. F. C. A. Veloso, B. Ventura, M. Virius, M. Wagner, S. Wallner, K. Zaremba, M. Zavertyaev, M. Zemko, E. Zemlyanichkina, M. Ziembicki

Dipartimento di Scienze e Innovazione Tecnologica

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised (LiD)-Li-6 (deuteron) and NH3 (proton) targets is presented. All available data collected in the years 2003-2004 and 2007/2010 with the COMPASS spectrometer using a muon beam of 160GeV/c at the CERN SPS were analysed. The asymmetries provide access to the transversity distribution functions via a fragmentation function that in principle may be independently obtained from e(+)e(-) annihilation data. Results are presented, discussed and compared to existing measurements as well as to model predictions. Asymmetries of pi(+)pi(-) pairs measured with the proton target as a function of the Bjorken scaling variable are sizeable in the range x>0.032, indicating non-vanishing transversity distribution and di-hadron interference fragmentation functions. As already pointed out by several authors, the small asymmetries of pi(+)pi(-) measured on the (LiD)-Li-6 target can be interpreted as indication for a cancellation of u and d-quark transversity distributions.(c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

Lingua originale	Inglese
Rivista	PHYSICS LETTERS. SECTION B
Volume	845
DOI	https://doi.org/10.1016/j.physletb.2023.138155
Stato di pubblicazione	Pubblicato - 2023

Keywords

SIDIS
Di-hadron
Spin
Fragmentation
Transversity
Collins effect

OSS delle Nazioni Unite

Questo processo contribuisce al raggiungimento dei seguenti obiettivi di sviluppo sostenibile

Accesso al documento

10.1016/j.physletb.2023.138155

https://hdl.handle.net/11579/192222

Altri file e collegamenti

handle

Cita questo

Alexeev, G. D., Alexeev, M. G., Alice, C., Amoroso, A., Andrieux, V., Anosov, V., Augsten, K., Augustyniak, W., Azevedo, C. D. R., Badelek, B., Barth, J., Beck, R., Bedfer, Y., Bernhard, J., Bodlak, M., Bradamante, F., Braun, C., Bressan, A., Burtsev, V. E., ... Ziembicki, M. (2023). Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering. PHYSICS LETTERS. SECTION B, 845. https://doi.org/10.1016/j.physletb.2023.138155

@article{e869e9e6e91e459e91c40379fd631b35,

title = "Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering",

abstract = "A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised (LiD)-Li-6 (deuteron) and NH3 (proton) targets is presented. All available data collected in the years 2003-2004 and 2007/2010 with the COMPASS spectrometer using a muon beam of 160GeV/c at the CERN SPS were analysed. The asymmetries provide access to the transversity distribution functions via a fragmentation function that in principle may be independently obtained from e(+)e(-) annihilation data. Results are presented, discussed and compared to existing measurements as well as to model predictions. Asymmetries of pi(+)pi(-) pairs measured with the proton target as a function of the Bjorken scaling variable are sizeable in the range x>0.032, indicating non-vanishing transversity distribution and di-hadron interference fragmentation functions. As already pointed out by several authors, the small asymmetries of pi(+)pi(-) measured on the (LiD)-Li-6 target can be interpreted as indication for a cancellation of u and d-quark transversity distributions.(c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).",

keywords = "SIDIS, Di-hadron, Spin, Fragmentation, Transversity, Collins effect, SIDIS, Di-hadron, Spin, Fragmentation, Transversity, Collins effect",

author = "Alexeev, {G. D.} and Alexeev, {M. G.} and C. Alice and A. Amoroso and V. Andrieux and V. Anosov and K. Augsten and W. Augustyniak and Azevedo, {C. D. R.} and B. Badelek and J. Barth and R. Beck and Y. Bedfer and J. Bernhard and M. Bodlak and F. Bradamante and C. Braun and A. Bressan 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 Correia, {P. M. M.} and Crespo, {M. L.} and D. D'Ago and {Dalla Torre}, S. and Dasgupta, {S. S.} and S. Dasgupta and {Del Carro}, F. and I. Denisenko and Denisov, {O. Yu} and Donskov, {S. V.} and N. Doshita and Ch Dreisbach and W. D{\"u}nnweber and Dusaev, {R. R.} and D. Ecker and A. Efremov and C. Elia and D. Eremeev and P. Faccioli and M. Faessler and M. Finger and M. Finger and H. Fischer and Fl{\"o}thner, {K. J.} and W. Florian and Friedrich, {J. M.} and V. Frolov and {Garcia Ord{\`o}{\~n}ez}, {L. G.} and F. Gautheron and Gavrichtchouk, {O. P.} and S. Gerassimov and J. Giarra and D. Giordano and M. Gorzellik and A. Grasso and A. Gridin and {Grosse Perdekamp}, M. and B. Grube and M. Gr{\"u}ner and A. Guskov and {von Harrach}, D. and M. Hoffmann and N. Horikawa and N. d'Hose and Hsieh, {C. -Y.} and S. Huber and S. Ishimoto and A. Ivanov and T. Iwata and M. Jandek and V. Jary and R. Joosten and E. Kabu{\ss} and F. Kaspar and A. Kerbizi and B. Ketzer and A. Khatun and Khaustov, {G. V.} and F. Klein and Koivuniemi, {J. H.} and Kolosov, {V. N.} and {Kondo Horikawa}, K. and I. Konorov and Konstantinov, {V. F.} and Korzenev, {A. M.} and Kotzinian, {A. M.} and Kouznetsov, {O. M.} and A. Koval and Z. Kral and F. Krinner and F. Kunne and K. Kurek and Kurjata, {R. P.} and A. Kveton and K. Lavickova and S. Levorato and Lian, {Y. -S.} and J. Lichtenstadt and Lin, {P. -J.} and R. Longo and Lyubovitskij, {V. E.} and A. Maggiora and A. Magnon and N. Makins and N. Makke and Mallot, {G. K.} and A. Maltsev and Mamon, {S. A.} and A. Martin and J. Marzec and J. Matou{\v s}ek and T. Matsuda and G. Mattson and {Menezes Pires}, C. and F. Metzger and M. Meyer and W. Meyer and Mikhailov, {Yu V.} and M. Mikhasenko and E. Mitrofanov and D. Miura and Y. Miyachi and R. Molina and A. Moretti and A. Nagaytsev and D. Neyret and M. Niemiec and J. Nov{\'y} and Nowak, {W. -D.} and G. Nukazuka and Olshevsky, {A. G.} and M. Ostrick and Daniele PANZIERI and B. Parsamyan and S. Paul and H. Pekeler and Peng, {J. -C.} and G. Pesaro and M. Pe{\v s}ek and Peshekhonov, {D. V.} and M. Pe{\v s}kov{\'a} and S. Platchkov and J. Pochodzalla and Polyakov, {V. A.} and M. Quaresma and C. Quintans and G. Reicherz and C. Riedl and Ryabchikov, {D. I.} and A. Rychter and A. Rymbekova and Samoylenko, {V. D.} and A. Sandacz and S. Sarkar and Savin, {I. A.} and G. Sbrizzai and P. Schiavon and H. Schmieden and A. Selyunin and K. Sharko and L. Sinha and M. Slunecka and F. Sozzi and D. Sp{\"u}lbeck and A. Srnka and M. Stolarski and O. Subrt and M. Sulc and H. Suzuki and S. Tessaro and F. Tessarotto and A. Thiel and J. Tomsa and F. Tosello and A. Townsend and T. Triloki and V. Tskhay and B. Valinoti and Veit, {B. M.} and Veloso, {J. F. C. A.} and B. Ventura and M. Virius and M. Wagner and S. Wallner and K. Zaremba and M. Zavertyaev and M. Zemko and E. Zemlyanichkina and M. Ziembicki",

year = "2023",

doi = "10.1016/j.physletb.2023.138155",

language = "English",

volume = "845",

journal = "PHYSICS LETTERS. SECTION B",

issn = "0370-2693",

}

Alexeev, GD, Alexeev, MG, Alice, C, Amoroso, A, Andrieux, V, Anosov, V, Augsten, K, Augustyniak, W, Azevedo, CDR, Badelek, B, Barth, J, Beck, R, Bedfer, Y, Bernhard, J, Bodlak, M, Bradamante, F, Braun, C, Bressan, A, Burtsev, VE, Chang, W-C, Chatterjee, C, Chiosso, M, Chumakov, AG, Chung, S-U, Cicuttin, A, Correia, PMM, Crespo, ML, D'Ago, D, Dalla Torre, S, Dasgupta, SS, Dasgupta, S, Del Carro, F, Denisenko, I, Denisov, OY, Donskov, SV, Doshita, N, Dreisbach, C, Dünnweber, W, Dusaev, RR, Ecker, D, Efremov, A, Elia, C, Eremeev, D, Faccioli, P, Faessler, M, Finger, M, Finger, M, Fischer, H, Flöthner, KJ, Florian, W, Friedrich, JM, Frolov, V, Garcia Ordòñez, LG, Gautheron, F, Gavrichtchouk, OP, Gerassimov, S, Giarra, J, Giordano, D, Gorzellik, M, Grasso, A, Gridin, A, Grosse Perdekamp, M, Grube, B, Grüner, M, Guskov, A, von Harrach, D, Hoffmann, M, Horikawa, N, d'Hose, N, Hsieh, C-Y, Huber, S, Ishimoto, S, Ivanov, A, Iwata, T, Jandek, M, Jary, V, Joosten, R, Kabuß, E, Kaspar, F, Kerbizi, A, Ketzer, B, Khatun, A, Khaustov, GV, Klein, F, Koivuniemi, JH, Kolosov, VN, Kondo Horikawa, K, Konorov, I, Konstantinov, VF, Korzenev, AM, Kotzinian, AM, Kouznetsov, OM, Koval, A, Kral, Z, Krinner, F, Kunne, F, Kurek, K, Kurjata, RP, Kveton, A, Lavickova, K, Levorato, S, Lian, Y-S, Lichtenstadt, J, Lin, P-J, Longo, R, Lyubovitskij, VE, Maggiora, A, Magnon, A, Makins, N, Makke, N, Mallot, GK, Maltsev, A, Mamon, SA, Martin, A, Marzec, J, Matoušek, J, Matsuda, T, Mattson, G, Menezes Pires, C, Metzger, F, Meyer, M, Meyer, W, Mikhailov, YV, Mikhasenko, M, Mitrofanov, E, Miura, D, Miyachi, Y, Molina, R, Moretti, A, Nagaytsev, A, Neyret, D, Niemiec, M, Nový, J, Nowak, W-D, Nukazuka, G, Olshevsky, AG, Ostrick, M, PANZIERI, D, Parsamyan, B, Paul, S, Pekeler, H, Peng, J-C, Pesaro, G, Pešek, M, Peshekhonov, DV, Pešková, M, Platchkov, S, Pochodzalla, J, Polyakov, VA, Quaresma, M, Quintans, C, Reicherz, G, Riedl, C, Ryabchikov, DI, Rychter, A, Rymbekova, A, Samoylenko, VD, Sandacz, A, Sarkar, S, Savin, IA, Sbrizzai, G, Schiavon, P, Schmieden, H, Selyunin, A, Sharko, K, Sinha, L, Slunecka, M, Sozzi, F, Spülbeck, D, Srnka, A, Stolarski, M, Subrt, O, Sulc, M, Suzuki, H, Tessaro, S, Tessarotto, F, Thiel, A, Tomsa, J, Tosello, F, Townsend, A, Triloki, T, Tskhay, V, Valinoti, B, Veit, BM, Veloso, JFCA, Ventura, B, Virius, M, Wagner, M, Wallner, S, Zaremba, K, Zavertyaev, M, Zemko, M, Zemlyanichkina, E & Ziembicki, M 2023, 'Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering', PHYSICS LETTERS. SECTION B, vol. 845. https://doi.org/10.1016/j.physletb.2023.138155

TY - JOUR

T1 - Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

AU - Alexeev, G. D.

AU - Alexeev, M. G.

AU - Alice, C.

AU - Amoroso, A.

AU - Andrieux, V.

AU - Anosov, V.

AU - Augsten, K.

AU - Augustyniak, W.

AU - Azevedo, C. D. R.

AU - Badelek, B.

AU - Barth, J.

AU - Beck, R.

AU - Bedfer, Y.

AU - Bernhard, J.

AU - Bodlak, M.

AU - Bradamante, F.

AU - Braun, C.

AU - Bressan, A.

AU - Burtsev, V. E.

AU - Chang, W. -C.

AU - Chatterjee, C.

AU - Chiosso, M.

AU - Chumakov, A. G.

AU - Chung, S. -U.

AU - Cicuttin, A.

AU - Correia, P. M. M.

AU - Crespo, M. L.

AU - D'Ago, D.

AU - Dalla Torre, S.

AU - Dasgupta, S. S.

AU - Dasgupta, S.

AU - Del Carro, F.

AU - Denisenko, I.

AU - Denisov, O. Yu

AU - Donskov, S. V.

AU - Doshita, N.

AU - Dreisbach, Ch

AU - Dünnweber, W.

AU - Dusaev, R. R.

AU - Ecker, D.

AU - Efremov, A.

AU - Elia, C.

AU - Eremeev, D.

AU - Faccioli, P.

AU - Faessler, M.

AU - Finger, M.

AU - Fischer, H.

AU - Flöthner, K. J.

AU - Florian, W.

AU - Friedrich, J. M.

AU - Frolov, V.

AU - Garcia Ordòñez, L. G.

AU - Gautheron, F.

AU - Gavrichtchouk, O. P.

AU - Gerassimov, S.

AU - Giarra, J.

AU - Giordano, D.

AU - Gorzellik, M.

AU - Grasso, A.

AU - Gridin, A.

AU - Grosse Perdekamp, M.

AU - Grube, B.

AU - Grüner, M.

AU - Guskov, A.

AU - von Harrach, D.

AU - Hoffmann, M.

AU - Horikawa, N.

AU - d'Hose, N.

AU - Hsieh, C. -Y.

AU - Huber, S.

AU - Ishimoto, S.

AU - Ivanov, A.

AU - Iwata, T.

AU - Jandek, M.

AU - Jary, V.

AU - Joosten, R.

AU - Kabuß, E.

AU - Kaspar, F.

AU - Kerbizi, A.

AU - Ketzer, B.

AU - Khatun, A.

AU - Khaustov, G. V.

AU - Klein, F.

AU - Koivuniemi, J. H.

AU - Kolosov, V. N.

AU - Kondo Horikawa, K.

AU - Konorov, I.

AU - Konstantinov, V. F.

AU - Korzenev, A. M.

AU - Kotzinian, A. M.

AU - Kouznetsov, O. M.

AU - Koval, A.

AU - Kral, Z.

AU - Krinner, F.

AU - Kunne, F.

AU - Kurek, K.

AU - Kurjata, R. P.

AU - Kveton, A.

AU - Lavickova, K.

AU - Levorato, S.

AU - Lian, Y. -S.

AU - Lichtenstadt, J.

AU - Lin, P. -J.

AU - Longo, R.

AU - Lyubovitskij, V. E.

AU - Maggiora, A.

AU - Magnon, A.

AU - Makins, N.

AU - Makke, N.

AU - Mallot, G. K.

AU - Maltsev, A.

AU - Mamon, S. A.

AU - Martin, A.

AU - Marzec, J.

AU - Matoušek, J.

AU - Matsuda, T.

AU - Mattson, G.

AU - Menezes Pires, C.

AU - Metzger, F.

AU - Meyer, M.

AU - Meyer, W.

AU - Mikhailov, Yu V.

AU - Mikhasenko, M.

AU - Mitrofanov, E.

AU - Miura, D.

AU - Miyachi, Y.

AU - Molina, R.

AU - Moretti, A.

AU - Nagaytsev, A.

AU - Neyret, D.

AU - Niemiec, M.

AU - Nový, J.

AU - Nowak, W. -D.

AU - Nukazuka, G.

AU - Olshevsky, A. G.

AU - Ostrick, M.

AU - PANZIERI, Daniele

AU - Parsamyan, B.

AU - Paul, S.

AU - Pekeler, H.

AU - Peng, J. -C.

AU - Pesaro, G.

AU - Pešek, M.

AU - Peshekhonov, D. V.

AU - Pešková, M.

AU - Platchkov, S.

AU - Pochodzalla, J.

AU - Polyakov, V. A.

AU - Quaresma, M.

AU - Quintans, C.

AU - Reicherz, G.

AU - Riedl, C.

AU - Ryabchikov, D. I.

AU - Rychter, A.

AU - Rymbekova, A.

AU - Samoylenko, V. D.

AU - Sandacz, A.

AU - Sarkar, S.

AU - Savin, I. A.

AU - Sbrizzai, G.

AU - Schiavon, P.

AU - Schmieden, H.

AU - Selyunin, A.

AU - Sharko, K.

AU - Sinha, L.

AU - Slunecka, M.

AU - Sozzi, F.

AU - Spülbeck, D.

AU - Srnka, A.

AU - Stolarski, M.

AU - Subrt, O.

AU - Sulc, M.

AU - Suzuki, H.

AU - Tessaro, S.

AU - Tessarotto, F.

AU - Thiel, A.

AU - Tomsa, J.

AU - Tosello, F.

AU - Townsend, A.

AU - Triloki, T.

AU - Tskhay, V.

AU - Valinoti, B.

AU - Veit, B. M.

AU - Veloso, J. F. C. A.

AU - Ventura, B.

AU - Virius, M.

AU - Wagner, M.

AU - Wallner, S.

AU - Zaremba, K.

AU - Zavertyaev, M.

AU - Zemko, M.

AU - Zemlyanichkina, E.

AU - Ziembicki, M.

PY - 2023

Y1 - 2023

N2 - A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised (LiD)-Li-6 (deuteron) and NH3 (proton) targets is presented. All available data collected in the years 2003-2004 and 2007/2010 with the COMPASS spectrometer using a muon beam of 160GeV/c at the CERN SPS were analysed. The asymmetries provide access to the transversity distribution functions via a fragmentation function that in principle may be independently obtained from e(+)e(-) annihilation data. Results are presented, discussed and compared to existing measurements as well as to model predictions. Asymmetries of pi(+)pi(-) pairs measured with the proton target as a function of the Bjorken scaling variable are sizeable in the range x>0.032, indicating non-vanishing transversity distribution and di-hadron interference fragmentation functions. As already pointed out by several authors, the small asymmetries of pi(+)pi(-) measured on the (LiD)-Li-6 target can be interpreted as indication for a cancellation of u and d-quark transversity distributions.(c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

AB - A set of measurements of azimuthal asymmetries in the production of pairs of identified hadrons in deep-inelastic scattering of muons on transversely polarised (LiD)-Li-6 (deuteron) and NH3 (proton) targets is presented. All available data collected in the years 2003-2004 and 2007/2010 with the COMPASS spectrometer using a muon beam of 160GeV/c at the CERN SPS were analysed. The asymmetries provide access to the transversity distribution functions via a fragmentation function that in principle may be independently obtained from e(+)e(-) annihilation data. Results are presented, discussed and compared to existing measurements as well as to model predictions. Asymmetries of pi(+)pi(-) pairs measured with the proton target as a function of the Bjorken scaling variable are sizeable in the range x>0.032, indicating non-vanishing transversity distribution and di-hadron interference fragmentation functions. As already pointed out by several authors, the small asymmetries of pi(+)pi(-) measured on the (LiD)-Li-6 target can be interpreted as indication for a cancellation of u and d-quark transversity distributions.(c) 2023 Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

KW - SIDIS

KW - Di-hadron

KW - Spin

KW - Fragmentation

KW - Transversity

KW - Collins effect

KW - SIDIS

KW - Di-hadron

KW - Spin

KW - Fragmentation

KW - Transversity

KW - Collins effect

UR - https://iris.uniupo.it/handle/11579/192222

U2 - 10.1016/j.physletb.2023.138155

DO - 10.1016/j.physletb.2023.138155

M3 - Article

SN - 0370-2693

VL - 845

JO - PHYSICS LETTERS. SECTION B

JF - PHYSICS LETTERS. SECTION B

ER -

Transverse-spin-dependent azimuthal asymmetries of pion and kaon pairs produced in muon-proton and muon-deuteron semi-inclusive deep inelastic scattering

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