Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Sidorov, Aleksander V."'
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
Publikováno v:
Phys.Rev.D80:054026,2009
The results on polarized parton densities (PDFs) obtained using different methods of QCD analysis of the present polarized DIS data are discussed. Their dependence on the method used in the analysis, accounting or not for the kinematic and dynamic 1/
Externí odkaz:
http://arxiv.org/abs/0908.2390
The impact of the recent very precise CLAS and COMPASS g_1/F_1 data on polarized parton densities and higher twist effects is discussed. We demonstrate that the low Q^2 CLAS data improve essentially our knowledge of higher twist corrections to the sp
Externí odkaz:
http://arxiv.org/abs/0707.1373
Publikováno v:
Phys.Rev.D75:074027,2007
We have re-analyzed the world data on inclusive polarized DIS including the very precise CLAS proton and deuteron data, as well as the latest COMPASS data on the asymmetry $A_1^d$, and have studied the impact of these data on polarized parton densiti
Externí odkaz:
http://arxiv.org/abs/hep-ph/0612360
Publikováno v:
Mod.Phys.Lett.A21:1991-1998,2006
The target mass effects in polarized DIS have been studied. It was demonstrated that taking into account the first order target mass corrections to g1 a very good approximation of the exact formula is achieved. It was also shown that their magnitude
Externí odkaz:
http://arxiv.org/abs/hep-ph/0604092
Publikováno v:
Phys.Rev. D73 (2006) 034023
We have re-analyzed the world data on inclusive polarized DIS, in both NLO and LO QCD, including the new HERMES and COMPASS data. The updated NLO polarized densities are given in both the $\rm \bar{MS}$ and JET schemes. The impact of the new data on
Externí odkaz:
http://arxiv.org/abs/hep-ph/0512114
The impact of positivity constraints on the polarized parton densities has been studied. Special attention has been paid to the role of positivity constraints in determining the polarized strange quark and gluon densities, which are not well determin
Externí odkaz:
http://arxiv.org/abs/hep-ph/0507010
Publikováno v:
JHEP 0506:033,2005
We have re-analyzed the world data on inclusive polarized DIS, in both NLO and LO QCD, including the very precise JLab Hall A neutron data, and have studied the role of positivity constraints, and demonstrated their importance, in determining the str
Externí odkaz:
http://arxiv.org/abs/hep-ph/0503140
We present a new NLO QCD analysis of the world data on inclusive polarized deep inelastic scattering. Comparing to our previous analysis: i) the values of g_A and a_8=3F-D are updated ii) the MRST'99 instead of the MRST'98 parametrization for the inp
Externí odkaz:
http://arxiv.org/abs/hep-ph/0106214