Zobrazeno 1 - 10
of 55
pro vyhledávání: '"Stamenov, Dimiter"'
Publikováno v:
Phys. Rev. D 103, 054003 (2021)
The polarized strange quark puzzle concerns the fact that the polarized strange quark density extracted from polarized inclusive deep inelastic scattering data is significantly negative, whereas it is zero or slightly positive when extracted from a c
Externí odkaz:
http://arxiv.org/abs/2009.04808
Publikováno v:
Phys. Rev. D 93, 074026 (2016)
An NLO QCD analysis of the final HERMES data on pion multiplicities is presented and a new set of pion fragmentation functions is extracted from the best fit to the data. We have studied the so-called [x,z] and [Q^2,z] presentations of their data, as
Externí odkaz:
http://arxiv.org/abs/1506.06381
Publikováno v:
Phys. Rev. D 91, 054017 (2015)
The fact that analyses of semi-inclusive deep inelastic scattering suggest that the polarized strange quark density $\Delta s(x) + \Delta \bar{s}(x)$ is positive in the measured region of Bjorken x, whereas all analyses of inclusive deep inelastic sc
Externí odkaz:
http://arxiv.org/abs/1410.1657
Publikováno v:
Phys. Rev. D 90, 054026 (2014)
A theoretical analysis has been performed of the HERMES semi-inclusive deep inelastic data on the difference between $\pi^{+}$ and $\pi^{-}$ multiplicities. It turns out that the application of a standard perturbative QCD analysis, using, as usual, i
Externí odkaz:
http://arxiv.org/abs/1406.4678
A NLO QCD analysis of the HERMES and COMPASS data on pion multiplicities is presented. Sets of pion fragmentation functions are extracted from fits to the data and compared with those obtained from other groups before these data were available. The c
Externí odkaz:
http://arxiv.org/abs/1312.5200
New fragmentation functions (FFs) are extracted from a NLO QCD fit to the preliminary COMPASS data on pion and kaon multiplicities. It is shown that the new kaon FFs are very different from those of De Florian at al. (DSS) and Hirai et al. (HKNS). Th
Externí odkaz:
http://arxiv.org/abs/1212.3204
Publikováno v:
Phys.Rev.D84:014002,2011
The strange quark polarization puzzle, i.e. the contradiction between the negative polarized strange quark density obtained from analyses of inclusive DIS data and the positive values obtained from combined analyses of inclusive and semi-inclusive SI
Externí odkaz:
http://arxiv.org/abs/1103.5979
A new combined NLO QCD analysis of the polarized inclusive and semi-inclusive DIS data is presented. In contrast to previous combined analyses, the 1/Q^2 terms (kinematic - target mass corrections, and dynamic - higher twist corrections) in the expre
Externí odkaz:
http://arxiv.org/abs/1012.5033
Publikováno v:
Phys.Rev.D82:114018,2010
A new combined next to leading order QCD analysis of the polarized inclusive and semi-inclusive deep inelastic lepton-hadron scattering (DIS) data is presented. In contrast to previous combined analyses, the $1/Q^2$ terms (kinematic - target mass cor
Externí odkaz:
http://arxiv.org/abs/1010.0574
In a recent analysis of the world data on polarized DIS, Blumlein and Bottcher conclude that there is no evidence for higher twist contributions, in contrast to the claim of the LSS group, who find evidence for significant higher twist effects. We ex
Externí odkaz:
http://arxiv.org/abs/1007.4781