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pro vyhledávání: '"Christova, Ekaterina"'
At present, the Boer-Mulders (BM) functions are extracted from asymmetry data using the simplifying assumption of their proportionality to the Sivers functions for each quark flavour. Here we present two independent tests for this assumption. We subj
Externí odkaz:
http://arxiv.org/abs/1710.05657
Publikováno v:
Phys. Rev. D 97, 056018 (2018)
At present, the Boer-Mulders (BM) function for a given quark flavour is extracted from data on semi-inclusive deep inelastic scattering (SIDIS) using the simplifying assumption that it is proportional to the Sivers function for that flavour. In a rec
Externí odkaz:
http://arxiv.org/abs/1705.10613
Autor:
Christova, Ekaterina, Leader, Elliot
Publikováno v:
Phys. Rev. D 94, 096001 (2016)
Miraculously, target mass corrections for inclusive deep inelastic scattering can be calculated exactly. On the contrary, there does not exist a consistent derivation of kinematic hadron mass corrections for semi-inclusive deep inelastic scattering (
Externí odkaz:
http://arxiv.org/abs/1609.05816
Autor:
Christova, Ekaterina, Leader, Elliot
A major experimental program is presently underway to determine the Sivers, Boer-Mulders and transversity distributions, vital for understanding the internal structure of the nucleon. To this end we consider the Sivers, Boer-Mulders and transversity
Externí odkaz:
http://arxiv.org/abs/1512.01404
Autor:
Christova, Ekaterina, Leader, Elliot
Publikováno v:
Phys. Rev. D 92, 114004 (2015)
A major experimental program is presently underway worldwide to determine the fundamental non-perturbative functions, the Sivers, Boer-Mulders and transversity distributions, which are vital for an understanding of the internal structure of the nucle
Externí odkaz:
http://arxiv.org/abs/1507.01399
Autor:
Christova, Ekaterina, Todorov, Ivan
Publikováno v:
Bulg. J. Phys. v.42 (2015) 296 -303
The imaginary part of the Feynman amplitude of the $W$-loop contribution to the Higgs decay into two gammas (viewed as a function of the square of the off shell Higgs momentum) is finite and unambiguous. It is presented as the product of an invariant
Externí odkaz:
http://arxiv.org/abs/1410.7061
Autor:
Christova, Ekaterina
Publikováno v:
Phys. Rev. D 90, 054005 (2014)
Previously we showed that, based only on C and SU(2) invariance, the difference cross sections of hadrons with opposite charge in SIDIS e+N\to l+h+X is expressed solely in terms of the valence-quark densities and certain non-singlet combinations of F
Externí odkaz:
http://arxiv.org/abs/1407.5872
Publikováno v:
J. Phys. G: Nucl. Part. Phys. 40 (2013) 075004
Measurements of the polarization of the final proton in elastic e-p scattering drastically changed our knowledge about the electromagnetic form factors of the proton. Here we present our results of the calculation of the polarization of the final nuc
Externí odkaz:
http://arxiv.org/abs/1303.3710
We study effects of CP violation in an associated production of a charged Higgs boson and a top quark at the LHC: $pp \to tH^\pm +X$. We calculate the CP violating asymmetry between the total cross section for $H^+$ and $H^-$ production at next-to-le
Externí odkaz:
http://arxiv.org/abs/0812.1129
CP violation in H^\pm decays into the three possible decay modes into ordinary particles, 1) H^\pm \to tb, 2) H^\pm \to \nu \tau and 3) H^\pm \to W^\pm h^0 is considered. Analytic expressions and numerical results for the CP violating decay rate asym
Externí odkaz:
http://arxiv.org/abs/0812.0265