Faculty and Student Publications

Authors

H. Li, Indiana University Bloomington
A. Vossen, Duke University
H. Aihara, University of Tokyo
D. M. Asner, Brookhaven National Laboratory
V. Aulchenko, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
T. Aushev, Moscow Institute of Physics and Technology
V. Babu, Deutsches Elektronen-Synchrotron (DESY)
I. Badhrees, King Abdulaziz City for Science and Technology
A. M. Bakich, University of Sydney
J. Bennett, University of Mississippi
V. Bhardwaj, Indian Institute of Science Education and Research Mohali
T. Bilka, Charles University
J. Biswal, Jozef Stefan Institute
A. Bobrov, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
M. Bračko, Jozef Stefan Institute
M. Campajola, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
L. Cao, Karlsruhe Institute of Technology
D. Červenkov, Charles University
V. Chekelian, Max Planck Institute for Physics (Werner Heisenberg Institute)
A. Chen, National Central University Taiwan
B. G. Cheon, Hanyang University
H. E. Cho, Hanyang University
K. Cho, Korea Institute of Science and Technology Information
Y. Choi, Sungkyunkwan University
S. Choudhury, Indian Institute of Technology Hyderabad
D. Cinabro, Wayne State University
S. Cunliffe, Deutsches Elektronen-Synchrotron (DESY)
F. Di Capua, Istituto Nazionale di Fisica Nucleare, Sezione di Napoli
S. Di Carlo, Laboratoire de l'Accélérateur Linéaire
T. V. Dong, Graduate University for Advanced Studies
S. Eidelman, Budker Institute of Nuclear Physics of the Siberian Branch of the RAS
T. Ferber, Deutsches Elektronen-Synchrotron (DESY)

Document Type

Article

Publication Date

11-27-2019

Abstract

© 2019 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/" Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP 3 . This work reports the first observation of azimuthal asymmetries around the thrust axis in e+e- annihilation of pairs of back-to-back charged pions in one hemisphere, and π0 and η mesons in the opposite hemisphere. These results are complemented by a new analysis of pairs of back-to-back charged pions. The π0 and η asymmetries rise with the relative momentum z of the detected hadrons as well as with the transverse momentum with respect to the thrust axis. These asymmetries are sensitive to the Collins fragmentation function H1¥ and provide complementary information to previous measurements with charged pions and kaons in the final state. In particular, the η final states will provide additional information on the flavor structure of H1¥. This is the first measurement of the explicit transverse-momentum dependence of the Collins fragmentation function from Belle data. It uses a dataset of 980.4 fb-1 collected by the Belle experiment at or near a center-of-mass energy of 10.58 GeV.

Relational Format

journal article

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