TY - JOUR
T1 - Consistency check of charged hadron multiplicities and fragmentation functions in SIDIS
AU - Yang, Dong Jing
AU - Jiang, Fu Jiun
AU - Chang, Wen Chen
AU - Kao, Chung Wen
AU - Nam, Seung il
N1 - Publisher Copyright:
© 2016 The Authors.
PY - 2016/4/10
Y1 - 2016/4/10
N2 - We derived the conditions on certain combinations of integrals of the fragmentation functions of pion using HERMES data for the sum of the charged pion multiplicities from semi-inclusive deep-inelastic scattering (SIDIS) off the deuteron target. In our derivation the nucleon parton distribution functions (PDFs) are assumed to be isospin SU(2) symmetric. Similar conditions have also been obtained for the fragmentation functions (FFs) of kaon by the sum of charged kaon multiplicities as well. We have chosen several FFs to study the impact of those conditions we have derived. Among those FFs, we find that the fragmentation functions produced by the nonlocal chiral-quark model (NLχQM) constantly satisfy the conditions. Furthermore, the ratios of the strange PDFs S(x, Q2) and the non-strange PDFs Q(x, Q2) extracted from the charged pion and kaon multiplicities differ from each other significantly. Finally, we demonstrate that the HERMES pion multiplicity data are unlikely to be compatible with two widely-used PDFs, namely CTEQ6L and leading order NNPDF3.0.
AB - We derived the conditions on certain combinations of integrals of the fragmentation functions of pion using HERMES data for the sum of the charged pion multiplicities from semi-inclusive deep-inelastic scattering (SIDIS) off the deuteron target. In our derivation the nucleon parton distribution functions (PDFs) are assumed to be isospin SU(2) symmetric. Similar conditions have also been obtained for the fragmentation functions (FFs) of kaon by the sum of charged kaon multiplicities as well. We have chosen several FFs to study the impact of those conditions we have derived. Among those FFs, we find that the fragmentation functions produced by the nonlocal chiral-quark model (NLχQM) constantly satisfy the conditions. Furthermore, the ratios of the strange PDFs S(x, Q2) and the non-strange PDFs Q(x, Q2) extracted from the charged pion and kaon multiplicities differ from each other significantly. Finally, we demonstrate that the HERMES pion multiplicity data are unlikely to be compatible with two widely-used PDFs, namely CTEQ6L and leading order NNPDF3.0.
KW - Charged hadron multiplicity
KW - DGLAP evolution
KW - Nonlocal chiral-quark model
KW - Parton distribution functions
KW - Pion and kaon fragmentation functions
KW - Semi-inclusive deeply-inelastic scattering
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U2 - 10.1016/j.physletb.2016.02.046
DO - 10.1016/j.physletb.2016.02.046
M3 - Article
AN - SCOPUS:84959431477
SN - 0370-2693
VL - 755
SP - 393
EP - 402
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ER -