Medium-induced flavor conversion and kaon spectra in electron-ion collisions

Multiple scattering and induced parton splitting lead to a medium modification of the QCD evolution for jet fragmentation functions and the final hadron spectra. Medium-induced parton splittings not only lead to energy loss of leading partons and suppression of leading hadron spectra, but also modif...

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Bibliographic Details
Published inarXiv.org
Main Authors Ning-bo, Chang, Wei-tian, Deng, Wang, Xin-Nian
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 11.02.2021
Subjects
Atomic collisions
Conversion
Emission analysis
Energy dissipation
Evolution
Flavor (particle physics)
Gluons
Pair production
Partons
Physics - High Energy Physics - Phenomenology
Physics - Nuclear Theory
Quantum chromodynamics
Quarks
Spectra
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Summary:Multiple scattering and induced parton splitting lead to a medium modification of the QCD evolution for jet fragmentation functions and the final hadron spectra. Medium-induced parton splittings not only lead to energy loss of leading partons and suppression of leading hadron spectra, but also modify the flavor composition of a jet due to induced flavor conversion via gluon emission, quark pair production and annihilation. Through a numerical study of the medium-modified QCD evolution, leading \(K^-\) strange meson spectra are found to be particularly sensitive to the induced flavor conversion in semi-inclusive deeply inelastic scatterings (SIDIS) off a large nucleus. The induced flavor conversion can lead to increased number of gluons and sea quarks in a jet and, as a consequence, enhance the leading \(K^-\) spectra to counter the effect of parton energy loss in SIDIS with large momentum fractions \(x_B\) where the struck quarks are mostly valence quarks of the nucleus.
ISSN:2331-8422
DOI:10.48550/arxiv.1411.7007