Interplay among transversity induced asymmetries in hadron leptoproduction
Abstract
In the fragmentation of a transversely polarized quark several left-right asymmetries are possible for the hadrons in the jet. When only one unpolarized hadron is selected, it exhibits an azimuthal modulation known as Collins effect. When a pair of oppositely charged hadrons is observed, three asymmetries can be considered, a di-hadron asymmetry and two single hadron asymmetries. In lepton deep inelastic scattering on transversely polarized nucleons all these asymmetries are coupled with the transversity distribution. From the high statistics COMPASS data on oppositely charged hadron-pair production we have investigated for the first time the dependence of these three asymmetries on the difference of the azimuthal angles of the two hadrons. The similarity of transversity induced single and di-hadron asymmetries is discussed. A new analysis of the data allows to establish quantitative relationships among them, providing for the first time strong experimental indication that the underlying fragmentation mechanisms are all driven by a common physical process.
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@article{arxiv.1507.07593,
title = {Interplay among transversity induced asymmetries in hadron leptoproduction},
author = {Compass Collaboration and C. Adolph and R. Akhunzyanov and M. G. Alexeev and G. D. Alexeev and A. Amoroso and V. Andrieux and V. Anosov and W. Augustyniak and A. Austregesilo and C. D. R. Azevedo and B. Badelek and F. Balestra and J. Barth and R. Beck and Y. Bedfer and J. Bernhard and K. Bicker and E. R. Bielert and R. Birsa and J. Bisplinghoff and M. Bodlak and M. Boer and P. Bordalo and F. Bradamante and C. Braun and A. Bressan and M. Büchele and E. Burtin and W. -C. Chang and M. Chiosso and I. Choi and S. U. Chung and A. Cicuttin and M. L. Crespo and Q. Curiel and N. d'Hose and S. Dalla Torre and S. S. Dasgupta and S. Dasgupta and O. Yu. Denisov and L. Dhara and S. V. Donskov and N. Doshita and V. Duic and M. Dziewiecki and A. Efremov and C. Elia and P. D. Eversheim and W. Eyrich and A. Ferrero and M. Finger and M. Finger and H. Fischer and C. Franco and N. du Fresne von Hohenesche and J. M. Friedrich and V. Frolov and E. Fuchey and F. Gautheron and O. P. Gavrichtchouk and S. Gerassimov and F. Giordano and I. Gnesi and M. Gorzellik and S. Grabmüller and A. Grasso and M. Grosse-Perdekamp and B. Grube and T. Grussenmeyer and A. Guskov and F. Haas and D. Hahne and D. von Harrach and R. Hashimoto and F. H. Heinsius and F. Herrmann and F. Hinterberger and N. Horikawa and C. -Yu Hsieh and S. Huber and S. Ishimoto and A. Ivanov and Yu. Ivanshin and T. Iwata and R. Jahn and V. Jary and P. Jörg and R. Joosten and E. Kabuß and B. Ketzer and G. V. Khaustov and Yu. A. Khokhlov and Yu. Kisselev and F. Klein and K. Klimaszewski and J. H. Koivuniemi and V. N. Kolosov and K. Kondo and K. Königsmann and I. Konorov and V. F. Konstantinov and A. M. Kotzinian and O. Kouznetsov and M. Krämer and P. Kremser and F. Krinner and Z. V. Kroumchtein and N. Kuchinski and F. Kunne and K. Kurek and R. P. Kurjata and A. A. Lednev and A. Lehmann and M. Levillain and S. Levorato and J. Lichtenstadt and R. Longo and A. Maggiora and A. Magnon and N. Makins and N. Makke and G. K. Mallot and C. Marchand and B. Marianski and A. Martin and J. Marzec and J. Matousek and H. Matsuda and T. Matsuda and G. Meshcheryakov and W. Meyer and T. Michigami and Yu. V. Mikhailov and Y. Miyachi and P. Montuenga and A. Nagaytsev and F. Nerling and D. Neyret and V. I. Nikolaenko and J. Novy and W. -D. Nowak and G. Nukazuka and A. S. Nunes and A. G. Olshevsky and I. Orlov and M. Ostrick and D. Panzieri and B. Parsamyan and S. Paul and J. -C. Peng and F. Pereira and G. Pesaro and M. Pesek and D. V. Peshekhonov and S. Platchkov and J. Pochodzalla and V. A. Polyakov and J. Pretz and M. Quaresma and C. Quintans and S. Ramos and C. Regali and G. Reicherz and C. Riedl and N. S. Rossiyskaya and D. I. Ryabchikov and A. Rychter and V. D. Samoylenko and A. Sandacz and C. Santos and S. Sarkar and I. A. Savin and G. Sbrizzai and P. Schiavon and K. Schmidt and H. Schmieden and K. Schönning and S. Schopferer and A. Selyunin and O. Yu. Shevchenko and L. Silva and L. Sinha and S. Sirtl and M. Slunecka and F. Sozzi and A. Srnka and M. Stolarski and M. Sulc and H. Suzuki and A. Szabelski and T. Szameitat and P. Sznajder and S. Takekawa and J. ter Wolbeek and S. Tessaro and F. Tessarotto and F. Thibaud and F. Tosello and V. Tskhay and S. Uhl and J. Veloso and M. Virius and T. Weisrock and M. Wilfert and K. Zaremba and M. Zavertyaev and E. Zemlyanichkina and M. Ziembicki and A. Zink},
journal= {arXiv preprint arXiv:1507.07593},
year = {2015}
}
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6 figures