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http://hdl.handle.net/2445/131196
Title: | Measurement of Collins asymmetries in inclusive production of charged pion pairs in e+e- annihilation at BABAR |
Author: | Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 9-Sep-2014 |
Publisher: | American Physical Society |
Abstract: | We present measurements of Collins asymmetries in the inclusive process e + e − → π π X , where π stands for charged pions, at a center-of-mass energy of 10.6 GeV. We use a data sample of 468 fb − 1 collected by the BABAR experiment at the PEP-II B factory at SLAC, and consider pairs of charged pions produced in opposite hemispheres of hadronic events. We observe clear asymmetries in the distributions of the azimuthal angles in two distinct reference frames. We study the dependence of the asymmetry on several kinematic variables, finding that it increases with increasing pion momentum and momentum transverse to the analysis axis, and with increasing angle between the thrust and beam axis. |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevD.90.052003 |
It is part of: | Physical Review D, 2014, vol. 90, num. 5, p. 052003 |
URI: | http://hdl.handle.net/2445/131196 |
Related resource: | https://doi.org/10.1103/PhysRevD.90.052003 |
ISSN: | 1550-7998 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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646450.pdf | 2.03 MB | Adobe PDF | View/Open |
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