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1.	Ablikim, M., et al. (author) Measurement of azimuthal asymmetries in inclusive charged dipion production in $e^+e^-$ annihilations at $\sqrt{s}$ = 3.65 GeV 2016 In: PHYSICAL REVIEW LETTERS. - 0031-9007 .- 1079-7114. ; 116:4 Journal article (peer-reviewed)abstract We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process $e^+e^-\rightarrow \pi\pi X$ based on a data set of 62 $\rm{pb}^{-1}$ at the center-of-mass energy $\sqrt{s}=3.65$ GeV collected with the BESIII detector. These asymmetries can be attributed to the Collins fragmentation function. We observe a nonzero asymmetry, which increases with increasing pion momentum. As our energy scale is close to that of the existing semi-inclusive deep inelastic scattering experimental data, the measured asymmetries are important inputs for the global analysis of extracting the quark transversity distribution inside the nucleon and are valuable to explore the energy evolution of the spin-dependent fragmentation function.

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Type of publication: journal article (1)

Type of content: peer-reviewed (1)

Author/Editor: Liu, X (1); Cakir, O. (1); Cetin, S. A. (1); Chen, X. (1); Fang, Y. (1); Huang, Y. (1); show more...; Jin, S. (1); Liu, D. (1); Liu, J. B. (1); Liu, K. (1); Ouyang, Q. (1); Peters, K. (1); Wang, K. (1); Xu, L. (1); Yang, Y. (1); Zhang, L. (1); Zhemchugov, A. (1); Zhou, L. (1); Gao, Y. (1); Liu, J. (1); Ma, L. L. (1); Guo, Y (1); Huang, G. S. (1); Qi, M. (1); Zhang, Q. (1); Kupsc, Andrzej (1); Zhang, Y. (1); Chen, G. (1); Liu, Q. (1); Wu, Z. (1); Zeng, Y. (1); Hu, Y. (1); Cai, X. (1); Wang, D. (1); Ferroli, R. Baldini (1); Wang, M. (1); Li, G. (1); Zhu, Y. C. (1); Pan, Y. (1); Wang, Z. (1); Chen, H. -Y (1); Varner, G. S. (1); Yang, L. (1); Zhu, S. (1); Boyko, I. (1); Dedovich, D. (1); Lu, Y (1); Wang, P. (1); Han, S. (1); Zhao, Q (1); show less...

University: Uppsala University (1)

Language: English (1)

Research subject (UKÄ/SCB): Natural sciences (1)

Year: 2016 (1)

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