Scientific Library of Tomsk State University

   E-catalog        

Normal view MARC view

Measurement of azimuthal asymmetries in inclusive charged dipion production in e+e- annihilations at √s = 3.65 GeV M. Ablikim, M. N. Achasov, X. C. Ai [et.al.]

Contributor(s): Ablikim, M | Ai, X. C | Chelkov, G. A | Achasov, M. NMaterial type: ArticleArticleSubject(s): BESIII, детектор | асимметрия | пионы (частицы)Genre/Form: статьи в журналах Online resources: Click here to access online In: Physical Review Letters Vol. 116, № 4. P. 042001-1-042001-7Abstract: We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e+e−→ππX, based on a data set of 62  pb−1 at the center-of-mass energy of 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.
Tags from this library: No tags from this library for this title. Log in to add tags.
No physical items for this record

We present a measurement of the azimuthal asymmetries of two charged pions in the inclusive process e+e−→ππX, based on a data set of 62  pb−1 at the center-of-mass energy of 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.

There are no comments on this title.

to post a comment.
Share