Issue |
EPJ Web Conf.
Volume 177, 2018
The XXI International Scientific Conference of Young Scientists and Specialists (AYSS-2017)
|
|
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Article Number | 04007 | |
Number of page(s) | 5 | |
Section | High Energy Physics | |
DOI | https://doi.org/10.1051/epjconf/201817704007 | |
Published online | 18 April 2018 |
https://doi.org/10.1051/epjconf/201817704007
Measurement of multiplicities of charged hadrons, pions and kaons in DIS at COMPASS
Joint Institute for Nuclear Research, Dubna
* e-mail: nikolai.mitrofanov@cern.ch
Published online: 18 April 2018
Precise measurements of multiplicities of charged hadrons, pions and kaons in deep inelastic scattering were performed. The data were obtained by the COMPASS Collaboration by scattering 160 GeV muons off an isoscalar 6LiD target. The results were obtained in three-dimensional bins of the Bjorken scaling variable x, the relative virtual-photon energy y, and the fraction z of the virtual-photon energy carried by the produced hadron. A leading-order pQCD analysis was performed using the pion multiplicity results to extract quark fragmentation functions into pions. The results for the sum of the z-integrated multiplicities for pions and for kaons, differ from earlier results from the HERMES experiment. The results from the sum of the z-integrated K+ and K- multiplicities at high x point to a value of the non-strange quark fragmentation function larger than obtained by the earlier DSS fit.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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