Collins asymmetries in inclusive charged KK and Kπ pairs produced in e[superscript +]e[superscript -] annihilation
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PhysRevD.92.111101.pdf
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Author(s)
Lees, J. P.
Poireau, V.
Tisserand, V.
Grauges, E.
Palano, A.
Eigen, G.
Stugu, B.
Brown, D. N.
Kerth, L. T.
Kolomensky, Yu. G.
Date Issued
December 2015
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. P., V. Poireau, V. Tisserand, E. Grauges, A. Palano, G. Eigen, B. Stugu, et al. “Collins Asymmetries in Inclusive charged KK and Kπ pairs Produced In e[superscript +]e[superscript −] annihilation.” Phys. Rev. D 92, no. 11 (December 22, 2015). © 2015 American Physical Society
Version
Final published version
Abstract
We present measurements of Collins asymmetries in the inclusive process e[superscript +]e[superscxript -] → h[subscript 1]h[subscript 2]X, h[subscript 1]h[subscript 2] = KK, Kπ, ππ, at the center-of-mass energy of 10.6 GeV, using a data sample of 468 fb[superscript -1] collected by the BABAR experiment at the PEP-II B factory at SLAC National Accelerator Center. Considering hadrons in opposite thrust hemispheres of hadronic events, we observe clear azimuthal asymmetries in the ratio of unlike sign to like sign, and unlike sign to all charged h[subscript 1]h[subscript 2] pairs, which increase with hadron energies. The Kπ asymmetries are similar to those measured for the ππ pairs, whereas those measured for high-energy KK pairs are, in general, larger.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.92.111101
